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Relevant bibliographies by topics / Ceramic fibers – Thermal properties

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Academic literature on the topic 'Ceramic fibers – Thermal properties'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Journal articles on the topic "Ceramic fibers – Thermal properties"

1

Sun, Chen Cheng, Zi Jun Hu, Tong Qi Li, Hong Bo Zhang, Zhi Jie Sun, and Zuo Guang Zhang. "Preparation and Properties of Ceramic Tiles for Heat Insulation." Materials Science Forum 546-549 (May 2007): 2157–62. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.2157.

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The bulk tiles of ceramic fibers reinforced aerogel were prepared from two reinforcements, evenly dispersed ceramic fibers and sintered tiles. It has been found that ceramic fiber-reinforced aerogels showed higher thermal conductivity than aerogel itself. Shrinkage of aerogels in chopped fiber reinforced aerogel composites showed similar tendency as pure aerogel during gelation, but the shrinkage was prohibited during supercritical drying. By contrary, in the case of sintered tile reinforced aerogel, shrinkage of aerogel was completely limited in both gelation and drying processes. Average of about 50% increase of compressive strengths of the sintered tile reinforced aerogel to sintered tiles were obtained with an average density increase of about 36%, their thermal conductivity depressed slightly.

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2

Babashov, V. G., N. M. Varrik, V. G. Maksimov, and O. N. Samorodova. "OXIDE FIBER COATED WITH SILICON CARBIDE FOR PRODUCING COMPOSITE MATERIALS." Aviation Materials and Technologies, no. 3 (2021): 94–104. http://dx.doi.org/10.18577/2713-0193-2021-0-3-94-104.

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The article presents the results of an experiment on the application of a silicon carbide coating on an alumina fiber and studies the properties of the resulting coated fibers. The purpose of applying a barrier coating to the fibers is to protect the fiber from degradation during the manufacturing of a ceramic composite material. The paper gives the characteristics of barrier coatings, such as thickness, continuity, structure, thermal and thermo-oxidative properties. The obtained data will be useful in the development of new types of ceramic composite materials reinforced with fibers.

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Holčapek, Ondřej, Jaroslava Kot'átková, and Pavel Reiterman. "Development of Composite for Thermal Barriers Reinforced by Ceramic Fibers." Advances in Civil Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/3251523.

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The paper introduces the development process of fiber-reinforced composite with increased resistance to elevated temperatures, which could be additionally increased by the hydrothermal curing. However, production of these composites is extremely energy intensive, and that is why the process of the design reflects environmental aspects by incorporation of waste material—fine ceramic powder applied as cement replacement. Studied composite materials consisted of the basalt aggregate, ceramic fibers applied up to 8% by volume, calcium-aluminous cement (CAC), ceramic powder up to 25% by mass (by 5%) as cement replacement, plasticizer, and water. All studied mixtures were subjected to thermal loading on three thermal levels: 105°C, 600°C, and 1000°C. Experimental assessment was performed in terms of both initial and residual material properties; flow test of fresh mixtures, bulk density, compressive strength, flexural strength, fracture energy, and dynamic modulus of elasticity were investigated to find out an optimal dosage of ceramic fibers. Resulting set of composites containing 4% of ceramic fibers with various modifications by ceramic powder was cured under specific hydrothermal condition and again subjected to elevated temperatures. One of the most valuable benefits of additional hydrothermal curing of the composites lies in the higher residual mechanical properties, what allows successful utilization of cured composite as a thermal barrier in civil engineering. Mixtures containing ceramic powder as cement substitute exhibited after hydrothermal curing increase of residual flexural strength about 35%; on the other hand, pure mixture exhibited increase up to 10% even higher absolute values.

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Shestakov, A. M. "Silicon carbide fibers and whiskers for ceramic matrix composites (review)." Industrial laboratory. Diagnostics of materials 87, no. 8 (2021): 51–63. http://dx.doi.org/10.26896/1028-6861-2021-87-8-51-63.

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An increase the operating temperature range of structural elements and aircraft assemblies is one of the main goals in developing advanced and new models of aerospace equipment to improve their technical characteristics. The most heat-loaded aircraft structures, such as a combustion chamber, high-pressure turbine segments, nozzle flaps with a controlled thrust vector, must have a long service life under conditions of high temperatures, an oxidizing environment, fuel combustion products, and variable mechanical and thermal loads. At the same time, modern Ti and Ni-based superalloys have reached the limits of their operating temperatures. The leading world aircraft manufacturers — General Electric (USA), Rolls-Royce High Temperature Composite Inc. (USA), Snecma Propulsion Solide (France) — actively conduct fundamental research in developing ceramic materials with high (1300 – 1600°C) and ultrahigh (2000 – 2500°C) operating temperatures. However, ceramic materials have a number of shortcomings attributed to the high brittleness and low crack resistance of monolithic ceramics. Moreover, manufacturing of complex configuration and large-sized ceramic parts faces serious difficulties. Nowadays, ceramic composite materials with a high-temperature matrix (e.g., based on ZrC-SiC) and reinforcing filler, an inorganic fiber, (e.g., silicon carbide) appeared most promising for operating temperatures above 1200°C and exhibited enhanced energy efficiency. Ceramic fibers based on silicon compounds possess excellent mechanical properties: the tensile strength more than 2 GPa, modulus of elasticity more than 200 GPa, and thermal resistance at a temperature above 800°C, thus making them an essential reinforcing component in metal and ceramic composites. This review is devoted to silicon carbide core fibers obtained by chemical vapor deposition of silicon carbide onto a tungsten or carbon core, which makes it possible to obtain fibers a 100 – 150 μm in diameter to be used in composites with a metal matrix. The coreless SiC-fibers with a diameter of 10 – 20 μm obtained by molding a polymer precursor from a melt and used mainly in ceramic composites are also considered. A comparative analysis of the phase composition, physical and mechanical properties and thermal-oxidative resistance of fibers obtained by different methods is presented. Whiskers (filamentary crystals) are also considered as reinforcing fillers for composite materials along with their properties and methods of production. The prospects of using different fibers and whiskers as reinforcing fillers for composites are discussed.

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Jacob, Reenu, and Jayakumari Isac. "Morphological, thermal and optical studies of jute-reinforced PbSrCaCuO–polypropylene composite." Modern Physics Letters B 30, no. 31 (2016): 1650379. http://dx.doi.org/10.1142/s0217984916503796.

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New research with modern technologies has always grabbed substantial attention. Conservation of raw materials like natural fibers has helped composite world to explore eco-friendly components. The aim of this paper is to study the potential of jute fiber-reinforced ceramic polymers. Alkali-treated jute fiber has been incorporated in a polypropylene ceramic matrix at different volume fractions. The morphological, thermal and optical studies of jute-reinforced ceramic Pb2Sr2CaCu2O9 (PbSrCaCuO) are studied. Morphological results evidently demonstrate that when the polypropylene ceramic matrix is reinforced with jute fiber, interfacial interaction between the varying proportions of the jute fiber and ceramic composite takes place. TGA and DSC results confirm the enhancement in the thermal stability of ceramic composites reinforced with jute fiber. The UV analysis of the composite gives a good quality measure on the optical properties of the new composite prepared.

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Freeman, G. B., W. J. Lackey, and T. L. Starr. "Characterization of BN-coated ceramic fibers." Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 740–41. http://dx.doi.org/10.1017/s042482010010576x.

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It is well known that ceramic materials possess excellent thermal properties for use at high temperatures but are subject to brittle failure. The incorporation of a suitable second phase (powder or fiber) can mitigate that brittle character and result in a composite material which actually possesses mechanical properties superior to those of competitive traditional materials. It has been shown that the remaining tendency toward brittle failure can be further reduced if the incorporated fiber exhibits a weak rather than strong bond with the matrix. This encourages debonding, crack deflection and fiber pull-out which all contribute to fracture toughness. It was the goal of this project to coat commercial Nextel type 312 fibers (composition: 3 moles Al2O3, 2 moles SiO2, and 1 mole B2O3) with an approximately 0.1 μm thin film of boron nitride (BN) for inclusion in a slip-cast sintered silica matrix.

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Ni, Xin Hua, Bao Feng Li, Guo Hui Zhong, and Lei Zhao. "Size Dependent Thermal Expansion Coefficient of Rod-Shaped Oxide Eutectic Ceramic." Advanced Materials Research 105-106 (April 2010): 146–49. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.146.

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Rod-shaped oxide eutectic ceramics fabricated through SHS process can acquire outstanding mechanical properties. First, Four-phase model method was used to study effective disturbance strain of rod-shaped oxide eutectic ceramics produced by nano fibers with inter-phases, then average strain of rod-shaped oxide eutectic ceramics aroused thermal inconsistency is obtained. The effective thermal expansion longitudinal strain and transverse strain of rod-shaped oxide eutectic ceramics are determined by the average strain. Rod-shaped oxide eutectic ceramics is transverse isotropy and has two independent thermal expansion coefficients. The results show that the thermal expansion coefficients of rod shaped oxide eutectic ceramics are dependent on the diameter of nano-fiber. The thermal expansion coefficients will decrease when the diameter of nano-fiber decrease.

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Licciulli, Antonio, Antonio Chiechi, Daniela Diso, and Alfonso Maffezzoli. "Ceramic Composites for Automotive Friction Devices." Advances in Science and Technology 45 (October 2006): 1394–98. http://dx.doi.org/10.4028/www.scientific.net/ast.45.1394.

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Advanced braking devices can represent a promising application for ceramic matrix composites (CMC) with functional and structural properties. If the actual advanced braking materials could be at least partially replaced by CMCs, it might become the first consumer market for these materials. CMC containing three main phases, silicon carbide, graphite and carbon fibers were prepared. A systematic analysis of the processing-structure-properties relationship of the composite is carried out. In particular, silicon carbide provides the necessary hardness, whereas graphite is used for its lubricating properties, and carbon fibers are used as reinforcement. The samples, prepared using a reactive bonding technique, exhibited adequate mechanical properties, high resistance to thermal shocks and good stability after many thermal cycles. Morphological and structural investigations have been performed to optimize the content of each component. Preliminary tribological investigations are presented.

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Silvestre, J., N. Silvestre, and J. de Brito. "An Overview on the Improvement of Mechanical Properties of Ceramics Nanocomposites." Journal of Nanomaterials 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/106494.

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Due to their prominent properties (mechanical, stiffness, strength, thermal stability), ceramic composite materials (CMC) have been widely applied in automotive, industrial and aerospace engineering, as well as in biomedical and electronic devices. Because monolithic ceramics exhibit brittle behaviour and low electrical conductivity, CMCs have been greatly improved in the last decade. CMCs are produced from ceramic fibres embedded in a ceramic matrix, for which several ceramic materials (oxide or non-oxide) are used for the fibres and the matrix. Due to the large diversity of available fibres, the properties of CMCs can be adapted to achieve structural targets. They are especially valuable for structural components with demanding mechanical and thermal requirements. However, with the advent of nanoparticles in this century, the research interests in CMCs are now changing from classical reinforcement (e.g., microscale fibres) to new types of reinforcement at nanoscale. This review paper presents the current state of knowledge on processing and mechanical properties of a new generation of CMCs: Ceramics Nanocomposites (CNCs).

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Liu, G., R. Ghosh, D. Mousanezhad, A. Vaziri, and H. Nayeb-Hashemi. "Thermal conductivity of biomimetic leaf composite." Journal of Composite Materials 52, no. 13 (2017): 1737–46. http://dx.doi.org/10.1177/0021998317733316.

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The venous morphology of a typical plant leaf affects its mechanical and thermal properties. Such a material could be considered as a fiber reinforced composite structure where the veins and the rest of the leaf are considered as two materials having highly contrast mechanical and thermal properties. The variegated venations found in nature is idealized into three principal fibers—the central mid-fiber corresponding to the mid-rib, straight parallel secondary fibers attached to the mid-fiber representing the secondary veins, and then another set of parallel fibers emanating from the secondary fibers mimicking the tertiary veins of a typical leaf. This paper addresses the in-plane thermal conductivity of such a composite by considering such a venous fiber morphology embedded in a matrix material. We have considered two cases, fibers having either higher or lower conductivity respect to the matrix. The tertiary fibers do not interconnect the secondary fibers in our present study. We carry out finite element based computational investigation of the thermal conductivity of these composites under uniaxial thermal gradients and study the effect of different fiber architectures. To this end, we use two broad types of architectures both having similar central main fiber but differing in either having only secondary fibers or additional tertiary fibers. The fiber and matrix volume fractions are kept constant and a comparative parametric study is carried out by varying the inclination of the secondary fibers. We find the heat conductivity in the direction of the main fiber (Y direction) increases significantly as the fiber angle of the secondary increases. Furthermore, for composite with metal fibers, the conductivity in the Y direction is further enhanced when composite is manufactured by having secondary fibers forming a closed cell structure. However, for composite with ceramic fibers, the conductivity of the composite in the Y direction is little affected by having secondary fibers closed. An opposite behavior is observed when considering conductivity of the composite in the X direction. The conductivity of the composite in the X direction is reduced with increase in the angle of the secondary fibers. Higher conductivity in the X direction is achieved for composite with no closed cells for composites with metal fibers. The results also indicate that for composites with the constant fiber volume fraction, morphology of tertiary fibers may not significantly alter material conductivities. In conclusion, introducing a leaf-mimicking topology in fiber architecture can provide significant additional degrees of tunability in design of these composite structures.

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Dissertations / Theses on the topic "Ceramic fibers – Thermal properties"

1

Bhatt, Hemanshu D. "Effect of interfacial thermal conductance and fiber orientation on the thermal diffusivity/conductivity of unidirectional fiber-reinforced ceramic matrix composites." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-07282008-135034/.

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Shayed, Mohammad Abu, Heike Hund, Rolf-Dieter Hund, and Chokri Cherif. "Thermal and oxidation resistant barrier on carbon fiber with Si and Si–Ti based pre-ceramic coatings for high temperature application." Sage, 2016. https://tud.qucosa.de/id/qucosa%3A35416.

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Carbon fiber (CF) must be protected from thermal oxidation for high temperature application because of its low thermo-oxidative stability above 450°C in air. CF is now increasingly being used as a reinforcing material in the construction industry. A thermal and oxidation resistant coating is necessary for CF-reinforced concrete (CFRC) composites in order to satisfy a high level of safety standard in the case of fire. New types of pre-ceramic coatings, such as Tyranno® polymer (Si–Ti based pre-ceramic) and SiO₂ sol–gel, have been deposited on CF filament yarn by means of a wet chemical continuous dip coating method. The results of surface analyses, e.g. scanning electron microscopy, X-ray photoelectron spectroscopy, and infrared spectroscopy, showed the changes in topographical properties of CF caused by the coatings. Thermogravimetric analysis proved that the high temperature (up to 800°C) oxidation stability of CF was considerably improved due to the coatings. Tensile test results indicated that the strength of CF yarn at 20°C was increased by up to 80% with the coatings. Thermo-mechanical properties were also enhanced up to 600°C. CF yarn retains its original strength and elasticity modulus, i.e. the stiffness at 700°C, with a Tyranno® polymer coating.

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3

Terril, Nathaniel D. "Field Simulation for the Microwave Heating of Thin Ceramic Fibers." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36863.

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Microwave processing of ceramics has seen a growth in research and development efforts throughout the past decade. One area of interest is the exploration of improved heating control through experiments and numerical modeling. Controlled heating may be used to counteract non-uniform heating and avoid destructive phenomena such as cracking and thermal runaway. Thermal runaway is a potential problem in materials with temperature dependent dielectric properties. As the material absorbs electromagnetic energy, the temperature increases as does its ability to absorb more energy. Controlled processing of the material may be achieved by manipulating the applied field. The purpose of this research is to model the interaction of the EM-field with a thin ceramic fiber to investigate possible mechanisms that may affect the heating process. The fiber undergoes microwave heating in a single-mode resonant applicator. Maxwell's equations for the fields within the cavity are solved using mode-matching techniques taking into account the field interaction of the fiber and an arbitrarily shaped coupling aperture. Effects of varying the aperture shape on the field distribution are explored. The coupled nature of the electromagnetic solution with the material's temperature-dependent properties, including an analysis of non-uniform heating, is also discussed.<br>Master of Science

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4

Depalma, Carlos Mariano A. "The role of the thermal contact conductance in the interpretation of laser flash data in fiber-reinforced composites." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10062009-020306/.

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Zahedi, Maryam. "Meshfree Method for Prediction of Thermal Properties of Porous Ceramic Materials." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/954.

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In the presented thesis work, meshfree method with distance fields is applied to create a novel computational approach which enables inclusion of the realistic geometric models of the microstructure and liberates Finite Element Analysis(FEA) from thedependance on and limitations of meshing of fine microstructural feature such as splats and porosity.Manufacturing processes of ceramics produce materials with complex porosity microstructure.Geometry of pores, their size and location substantially affect macro scale physical properties of the material. Complex structure and geometry of the pores severely limit application of modern Finite Element Analysis methods because they require construction of spatial grids (meshes) that conform to the geometric shape of the structure. As a result, there are virtually no effective tools available for predicting overall mechanical and thermal properties of porous materials based on their microstructure. This thesis is a separate handling and controls of geometric and physical computational models that are seamlessly combined at solution run time. Using the proposedapproach we will determine the effective thermal conductivity tensor of real porous ceramic materials featuring both isotropic and anisotropic thermal properties. This work involved development and implementation of numerical algorithms, data structure, and software.

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Chawla, Prashant. "Exploratory investigation of solar photothermal effects on carbon fibers." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/8659.

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7

Simmons, Jed. "OPTICAL AND PHYSICAL PROPERTIES OF CERAMIC CRYSTAL LASER MATERIALS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4123.

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Historically ceramic crystal laser material has had disadvantages compared to single crystal laser material. However, progress has been made in the last decade and a half to overcome the disadvantages associated with ceramic crystal. Today, because of the promise of ceramic crystal as a high power laser material, investigation into its properties, both physical and optical, is warranted and important. Thermal expansion was measured in this thesis for Nd:YAG (yttrium aluminum garnet) ceramic crystal using an interferometric method. The interferometer employed a spatially filtered HeNe at 633 nm wavelength. Thermal expansion coefficients measured for the ceramic crystal samples were near the reported values for single crystal Nd:YAG. With a similar experimental setup as that for the thermal expansion measurements, dn/dT for ceramic crystal Nd:YAG was measured and found to be slightly higher than the reported value for single crystal. Depolarization loss due to thermal gradient induced stresses can limit laser performance. As a result this phenomenon was modeled for ceramic crystal materials and compared to single crystals for slab and rod shaped gain media. This was accomplished using COMSOL Multiphysics, and MATLAB. Results indicate a dependence of the depolarization loss on the grain size where the loss decreases with decreased grain size even to the point where lower loss may be expected in ceramic crystals than in single crystal samples when the grain sizes in the ceramic crystal are sufficiently small. Deformation-induced thermal lensing was modeled for a single crystal slab and its relevance to ceramic crystal is discussed. Data indicates the most notable cause of deformation-induced thermal lensing is a consequence of the deformation of the top and bottom surfaces. Also, the strength of the lensing along the thickness is greater than the width and greater than that due to other causes of lensing along the thickness of the slab. Emission spectra, absorption spectra, and fluorescence lifetime were measured for Nd:YAG ceramic crystal and Yb:Lu2O3 ceramic crystal. No apparent inhomogeneous broadening appears to exist in the Nd:YAG ceramic at low concentrations. Concentration and temperature dependence effects on emission spectra were measured and are presented. Laser action in a thin disk of Yb:Y2O3 ceramic crystal was achieved. Pumping was accomplished with a fiber coupled diode laser stack at 938 nm. A slope efficiency of 34% was achieved with maximum output energy of 28.8 mJ/pulse.<br>Ph.D.<br>Department of Physics<br>Sciences<br>Physics PhD

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Prasad, Ajit. "Influence of processing variables on the mechanical properties of SiC fibers prepared by chemical vapor deposition." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/19651.

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Yang, Fan. "Electrical and thermal properties of yttria-stabilised zirconia (YSZ)- based ceramic materials." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/electrical-and-thermal-properties-of-yttriastabilised-zirconia-ysz-based-ceramic-materials(82568afe-ffcb-4a38-9166-e5de83337763).html.

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Electrical and thermal conductivities of the yttria-stabilised zirconia/alumina (YSZ/Al2O3) composites and the yttria-zirconia-ceria (YSZ-CeO2) solid solutions are studied in this thesis. The electrical conductivity of the YSZ/Al2O3 composites decreases with an increase in the volume fraction of Al2O3 and exhibits typical percolation behaviour. The electrical conductivity of the YSZ/Al2O3 interface is higher than that of the YSZ grain boundary, but lower than that of the YSZ grains. The thermal conductivity of the YSZ/Al2O3 composites increases with an increase in the Al2O3 volume fraction, and it can be fitted well to the Maxwell theoretical model, which indicates the absence of obvious interfacial thermal resistances in the composites. The low interfacial thermal resistance of the YSZ/Al2O3 interface is due to the 'clean' and coherent nature of the YSZ/Al2O3 interface, along with the small difference between the elastic properties of YSZ and Al2O3. The electrical conductivity of the [(ZrO2)1-x(CeO2)x]0.92(Y2O3)0.08 (0 ≤ x ≤ 1) solid solutions has a 'V-shape' variation as a function of the mole ratio of CeO2 (x). In the ZrO2-rich region (x < 0.5), CeO2 doping increases the concentration of defect associates which limits the mobility of the oxygen vacancies; in the CeO2-rich region (x > 0.5), the increase of x increases the lattice parameter, which enlarges the free channel for oxygen vacancy migration. A comparison of the YSZ-CeO2 solid solutions with the YSZ-HfO2 series indicates the ionic radius of the tetravalent dopant determines the composition dependence of the ionic conductivity of the solid solutions.The thermal conductivity of the [(ZrO2)1-x(CeO2)x]0.92(Y2O3)0.08 (0 ≤ x ≤ 1) solid solutions also has a 'V-shape' variation as a function of the mole ratio of CeO2 (x), which indicates an incorporation of Zr4+ and Ce4+ can effectively decrease the thermal conductivity of the end members YSZ and yttria-doped ceria (YDC). In the ZrO2-rich region (0 ≤ x ≤ 0.5), the thermal conductivity is almost temperature independent; in the CeO2-rich region (0.5 ≤ x ≤ 1), it decreases obviously with increasing temperature. By calculating the phonon scattering coefficients, it is concluded that the composition dependence of the thermal conductivity in the ternary solid solutions is dominated by the mass difference between Zr and Ce at the cation sites, whereas the temperature dependence is determined by the order/disorder of oxygen vacancies at the anion sites.

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Govindarajan, Raghavan. "Evolution of structure and properties during thermal annealing of poly(para-BENZOBISOXAZOLE) (PBO) fibers." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/8531.

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Books on the topic "Ceramic fibers – Thermal properties"

1

Marghussian, V. K. Thermo-mechanical properties of ceramic fibres. Parthenon Press, 1986.

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Campbell, Christian X. Databook on mechanical and thermophysical properties of fiber-reinforced ceramic matrix composites. Ceramic Information Analysis Center, Center for Information and Numerical Data Analysis and Synthesis, Purdue University, 1997.

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Jenkins, Michael G., Edgar Lara-Curzio, and Stephen T. Gonczy. Mechanical, thermal, and environmental testing and performance of ceramic composites and components. ASTM, 2000.

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Campbell, Christian X. Databook on mechanical and thermophysical properties of particulate-reinforced ceramic matrix composites. Ceramics Information Analysis Center, Center for Information and Numerical Data Analysis and Synthesis, Purdue University, 1995.

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E, Myers David. Parametric weight comparison of advanced metallic, ceramic tile and ceramic blanket thermal protection systems. National Aeronautics and Space Administration, Langley Research Center, 2000.

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Hocking, M. G. Metallic and ceramic coatings: Production, high temperature properties, and applications. Longman Scientific & Technical, 1989.

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Hocking, M. G. Metallic and ceramic coatings: Production, high temperature properties and applications. Longman Scientific & Technical, 1989.

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Hust, J. G. Glass fiberboard SRM for thermal resistance. U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Hust, J. G. Glass fiberboard SRM for thermal resistance. U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Chŏng, Hŏn-saeng. Yŏnso panŭngpŏp e ŭihan chŏnyŏlgwan ŭi seramik pʻibok kisul kaebal =: Ceramic lining of pipe for electric heating by combustion reaction process : chʻoejong pogosŏ. Sanŏp Chawŏnbu, 2006.

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Book chapters on the topic "Ceramic fibers – Thermal properties"

1

Yu, Jun Suh, Sung Park, Jae Chun Lee, In Sup Hahn, and Sang Kuk Woo. "Electrical and Thermal Properties of Carbon-Coated Porous Ceramic Fiber Composites." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-966-0.370.

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Dresselhaus, Mildred S., Gene Dresselhaus, Ko Sugihara, Ian L. Spain, and Harris A. Goldberg. "Thermal Properties." In Graphite Fibers and Filaments. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83379-3_5.

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Schneider, H., J. Göring, M. Schmücker, and F. Flucht. "Thermal Stability of Nextel 720 Alumino Silicate Fibers." In Ceramic Microstructures. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5393-9_74.

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Loison, S., and C. Huguet. "Physical and Chemical Properties of Silicon Carbide Fibers." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119407270.ch1.

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Chawla, K. K. "Micromechanics: Elastic, Thermal, and Physical Properties." In Ceramic Matrix Composites. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-1029-1_6.

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Chawla, K. K. "Micromechanics: elastic, thermal and physical properties." In Ceramic Matrix Composites. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4757-2216-1_6.

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Langley, Neal R., and Chi-Tang Li. "Effects of Interfacial Diffusion Barriers on Thermal Stability of Ceramic Fibers." In Ceramic Microstructures ’86. Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1933-7_41.

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Ramdani, Noureddine. "Thermal Properties of Polymer/Ceramic Composites." In Polymer and Ceramic Composite Materials. CRC Press, 2019. http://dx.doi.org/10.1201/b22371-6.

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Lee, C. H., A. Khalina, S. H. Lee, F. N. M. Padzil, and Z. M. A. Ainun. "Physical, Morphological, Structural, Thermal and Mechanical Properties of Pineapple Leaf Fibers." In Pineapple Leaf Fibers. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1416-6_6.

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Ordu, Mustafa, Jicheng Guo, Boyin Tai, James Bird, Siddharth Ramachandran, and Soumendra Basu. "Processing and Optical Properties of Ge-Core Fibers." In Ceramic Materials for Energy Applications VI. John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119321774.ch9.

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Conference papers on the topic "Ceramic fibers – Thermal properties"

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Grantham, Troy, Graham Tanner, Raul Molina, Nhut-Minh Duong, and Joseph H. Koo. "Ablation, Thermal, and Morphological Properties of SiC Fibers Reinforced Ceramic Matrix Composites." In 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-1581.

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White, L. R., T. L. Tompkins, K. C. Hsieh, and D. D. Johnson. "Ceramic Filters for Hot Gas Cleanup." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-313.

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This paper reviews the properties of high temperature ceramic fibers and relates why strength, thermal shock resistance, chemical inertness, and high temperature capability are important properties for high temperature filter media. The use of candle filters, fabric filters, and composite filters will be discussed for removal of particulates from hot gas streams in electrical power generation systems, metal refining, chemical processing, and Diesel engine exhaust applications.

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Sinha, A., K. Kokini, and K. J. Bowman. "Progressive Damage in Unidirectional Ceramic Composites Under Transient Thermal Fatigue." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-153.

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The changes in stiffness properties for a CAS matrix-Nicalon fiber unidirectional composite resulting from cyclic heating and cooling are presented. The measurements are made using an ultrasonic pulse-echo technique. It is shown that a significant decrease in stiffness is observed after 30 cycles.

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Go¨ring, Ju¨rgen, Bernd Kanka, Martin Schmu¨cker, and Hartmut Schneider. "A Potential Oxide/Oxide Ceramic Matrix Composite for Gas Turbine Applications." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38836.

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WHIPOX® (Wound Highly Porous Oxide CMCs) are oxide/oxide composites which are composed of highly porous alumino silicate or alumina matrices and of alumino silicate (Nextel 720, 3M) or alumina (Nextel 610, 3M) fibers. The materials are fabricated by a computer-controlled winding technique, developed at DLR. After eventual forming and joining steps, the green prepegs are pressureless sintered in air at 1300°C. The high temperature behavior of the CMCs is mainly controlled by the thermo-mechanical properties of the oxide fibers. For long-term use (&gt;10,000 h) an application limit for the composite of about 1100°C is expected. It can, however, be improved by external thermal barrier coatings up to a maximum surface temperature of 1300°C. Gas burner tests show that the composites are extremely resistant against thermal fatigue. Therefore it is a material with a high potential for the use under the long-term high temperature conditions of gas turbine engines.

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Tehrani, Mehran, Masoud Safdari, Scott W. Case, and Marwan S. Al-Haik. "Using Multiscale Carbon Fiber/Carbon Nanotubes Composites for Damping Applications." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5087.

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A novel technique to grow carbon nanotubes (CNTs) on the surface of carbon fibers in a controlled fashion using simple lab set up is developed. Growing CNTs on the surface of carbon fibers will eliminate the problem of dispersion of CNTs in polymeric matrices. The employed synthesis technique retains the attractive feature of uniform distribution of the grown CNTs, low temperature of CNTs’ formation, i.e. 550 °C, via cheap and safe synthesis setup and catalysts. A protective thermal shield of thin ceramic layer and subsequently nickel catalytic particles are deposited on the surface of the carbon fiber yarns using magnetron sputtering. A simple tube furnace setup utilizing nitrogen, hydrogen and ethylene (C2H4) were used to grow CNTs on the carbon fiber yarns. Scanning electron microscopy revealed a uniform areal growth over the carbon fibers where the catalytic particles had been sputtered. The structure of the grown multiwall carbon nanotubes was characterized with the aid of transmission electron microscopy (TEM). Dynamical mechanical analysis (DMA) was employed to measure the loss and storage moduli of the hybrid composite together with the reference raw carbon fiber composite and the composite for which only ceramic and nickel substrates had been deposited on. The DMA tests were conducted over a frequency range of 1–40 Hz. Although the storage modulus remained almost unchanged over the frequency range for all samples, the loss modulus showed a frequency dependent behavior. The hybrid composite obtained the highest loss modulus among other samples with an average increase of approximately 25% and 55% compared to composites of the raw and ceramic/nickel coated carbon fibers, respectively. This improvement occurred while the average storage modulus of the hybrid composite declined by almost 9% and 15% compared to the composites of reference and ceramic/nickel coated samples, respectively. The ultimate strength and elastic moduli of the samples were measured using standard ASTM tensile test. Results of this study show that while the addition of the ceramic layer protects the fibers from mechanical degradation it abolishes the mechanisms by which the composite dissipates energy. On the other hand, with almost no compromise in weight, the hybrid composites are good potential candidate for damping applications. Furthermore, the addition of CNTs could contribute to improving other mechanical, electrical and thermal properties of the hybrid composite.

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Iijima, Karin, Tetsuro Yanaseko, Isao Kuboki, Hiroshi Sato, and Hiroshi Asanuma. "Investigation of Fracture Behavior of Piezoelectric Ceramics Embedded in Metal Matrix." In JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/lemp2020-8583.

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Abstract In recent years, there is considerable interest in the Structural health monitoring. This is a technique to diagnose and evaluate the damage and deterioration of a structure by attaching sensors to the structure, and is useful for judging whether building can be reused or not at that time of a disaster such as an earthquake. There are several types of sensors such as piezoelectric type, optical fiber and strain gauge type and piezoelectric sensors are very suitable for this purpose because they do not require an energy source considering that they produce electrical power by themselves. However, the application range of piezoelectric ceramics used for piezoelectric sensors is narrow because of its fragility. Then, the researches and developments of the piezoelectric ceramics embedded in the matrix that has excellent mechanical strength are carried out. The metal-core piezoelectric fiber/aluminum composite was developed by Asanuma et al. to overcome the problems associated with piezoelectric ceramics, such as poor mechanical properties, reliability; brittleness and low fracture strain. The fracture strain of piezoelectric ceramics fiber significantly improved due to residual compressive stress caused by difference of coefficient of thermal expansion between the ceramics and the matrix during embedding process. However, there is few statistical data on the mechanical properties of piezoelectric ceramic fibers, and the improvement in the properties due to the embedding has not been quantitatively evaluated. In this study, to overcome this problem, the simplified model of metal matrix piezoelectric composite was fabricated and used to compare strengths before and after embedding by 3-point bending test. As a result, it is found that Weibull parameters of piezoelectric ceramics are improved by embedding in the matrix.

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Ghazanfari, Amir, Wenbin Li, Ming C. Leu, Jeremy Watts, Yiyang Zhuang, and Jie Huang. "Freeform Extrusion Fabrication of Advanced Ceramic Components With Embedded Sapphire Optical Fiber Sensors." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9270.

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Traditionally, sensors to be integrated into a structural component are attached to or mounted on the component after the component has been fabricated. This tends to result in unsecured sensor attachment and/or serious offset between the sensor reading and the actual status of the structure, leading to performance degradation of the host structure. This paper describes a novel extrusion-based additive manufacturing process that has been developed to enable embedment of sensors in ceramic components during the part fabrication. In this process, an aqueous paste of ceramic particles with a very low amount of binder content (< 1 vol%) is extruded through a moving nozzle to build the part layer-by-layer. In the case of sensor embedment, the fabrication process is halted after a certain number of layers have been deposited. The sensors are placed in their predetermined locations, and the remaining layers are deposited until the part fabrication is completed. Because the sensors are embedded during the fabrication process, they are fully integrated with the part and the aforementioned problems of traditional sensor embedment can be eliminated. The sensors used in this study were made of sapphire optical fibers of 125 and 250 micro-meters diameter and can withstand temperatures up to 1600 °C. After the parts were built, two different drying processes (freeze drying and humid drying) were investigated to dry the parts. The dried parts were then sintered to achieve near theoretical density. Scanning electron microscopy was used to observe the embedded sensors and to detect any possible flaws in the part or embedded sensor. Attenuation of the sensors was measured in near-infrared region (1500–1600 nm wavelength) with a tunable laser source. Raman spectroscopy was performed on the samples to measure the residual stresses caused by shrinkage of the part and its slippage on the fibers during sintering and mismatch between the coefficients of thermal expansion of the fiber and host material. Standard test methods were employed to examine the effect of embedded fibers on the strength and hardness of the parts. The result indicated that the sapphire fiber sensors with diameters smaller than 250 micrometers are able to endure the freeform extrusion fabrication process and also the post-processing without compromising the part properties.

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Snead, Lance L., Yutai Katoh, William E. Windes, Robert J. Shinavski, and Timothy D. Burchell. "Ceramic Composites for Near Term Reactor Application." In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58050.

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Currently, two composites types are being developed for incore application: carbon fiber carbon composite (CFC), and silicon carbide fiber composite (SiC/SiC.) Irradiation effects studies have been carried out over the past few decades yielding radiation-tolerant CFC’s and a composite of SiC/SiC with no apparent degradation in mechanical properties to very high neutron exposure. While CFC’s can be engineered with significantly higher thermal conductivity, and a slight advantage in manufacturability than SiC/SiC, they do have a neutron irradiation-limited lifetime. The SiC composite, while possessing lower thermal conductivity (especially following irradiation), appears to have mechanical properties insensitive to irradiation. Both materials are currently being produced to sizes much larger than that considered for nuclear application. In addition to materials aspects, results of programs focusing on practical aspects of deploying composites for near-term reactors will be discussed. In particular, significant progress has been made in the fabrication, testing, and qualification of composite gas-cooled reactor control rod sheaths and the ASTM standardization required for eventual qualification.

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DiCarlo, James A., Hee Mann Yun, Gregory N. Morscher, and Ramakrishna T. Bhatt. "Progress in SiC/SiC Ceramic Composite Development for Gas Turbine Hot-Section Components Under NASA EPM and UEET Programs." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30461.

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The successful application of ceramic matrix composites as hot-section components in advanced gas turbine engines will require the development of constituent materials and processes that can provide the material systems with the key thermostructural properties required for long-term component service. Much initial progress in identifying these materials and processes was made under the former NASA Enabling Propulsion Materials Program using stoichiometric Sylramic™ silicon-carbide (SiC) fibers, 2D-woven fiber architectures, chemically vapor-infiltrated (CVI) BN fiber coatings (interphases), and SiC-based matrices containing CVI SiC interphase over-coatings, slurry-infiltrated SiC particulate, and melt-infiltrated (MI) silicon. The objective of this paper is to discuss the property benefits of this SiC/SiC composite system for high-temperature engine components and to elaborate on further progress in SiC/SiC development made under the new NASA Ultra Efficient Engine Technology Program. This progress stems from the recent development of advanced constituent materials and manufacturing processes, including specific treatments at NASA that improve the creep, rupture, and environmental resistance of the Sylramic fiber as well as the thermal conductivity and creep resistance of the CVI SiC over-coatings. Also discussed are recent observations concerning the detrimental effects of inadvertent carbon in the fiber-BN interfacial region and the beneficial effects of certain 2D-architectures for thin-walled SiC/SiC panels.

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Steen, Marc. "European Standardisation Efforts on Fibre-Reinforced Ceramic Matrix Composites." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-269.

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A critical phase in the life-cycle of a material is the transition from the development stage to that of design and industrial application. Advanced technical ceramics are currently in this phase and their future market penetration and acceptance as engineering materials critically depend on the availability of a robust set of standards for test methods which allow one to determine their mechanical and thermal properties in a reliable and reproducible way. In Europe, standardisation on continuous fibre reinforced ceramic matrix composites (CFCCs) officially started in 1989, when CEN TC 184 on Advanced Technical Ceramics was launched. The scope of TC 184 covers testing methods, and no efforts are paid to the development of material and product standards as yet. The work programme of TC 184 in the area of CFCCs, aimed at the establishment of testing methods for the generation of reliable data for design purposes, is reviewed.

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Reports on the topic "Ceramic fibers – Thermal properties"

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Thomas, J. R. Jr, W. P. Unruh, and G. J. Vogt. Mathematical model of thermal spikes in microwave heating of ceramic oxide fibers. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10139137.

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Gerzeski, Roger, Aaron Sprague, and Tyler Cianciolo. Transverse Uniaxial Composite Thermal Properties Data Base of Thermally Conductive Graphite Fibers with and without Contiguous Grown Graphite Fins. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada586868.

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Muguercia, I., L. Lagos, G. Yang, et al. An experimental investigation of the thermal/fluid properties of the nitrate to ammonia and ceramic (NAC) product slurry. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/28207.

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