Relevant bibliographies by topics / Aluminium silicon carbide

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Academic literature on the topic 'Aluminium silicon carbide'

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Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Aluminium silicon carbide"

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Thirupathaiah, C., and Sanjeev Reddy K. Hudgikar. "Effect of Silicon Carbide Boron Carbide and Fly-Ash Particles on Aluminium Metal Matrix Composite." Advances in Science and Technology 106 (May 2021): 26–30. http://dx.doi.org/10.4028/www.scientific.net/ast.106.26.

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The current paper deals about the fabrication of composite material is to combine the desirable attributes of metals and ceramics. Aluminium 6063 used as a base material in combination with the Silicon carbide ,Boron carbide and fly-ash were used as reinforcement material. Our intention is to increased or enhanced properties of pure Aluminium 6063 by addition of Silicon Carbide ,Boron Carbide and fly-ash. The process of fabrication composite material is prepared by using stir casting method. In this paper, addition of Silicon Carbide 1% , Boron Carbide 1% and fly-ash1% with aluminium increasing percentage ratio the mechanical properties of composite material is enhanced, so it is clear that the effect of Silicon Carbide , Boron Carbide and fly-ash were helpful to increasing properties of pure Aluminium by addition. The influence of reinforced ratio of silicon carbide, Boron carbide and fly-ash particles on mechanical behavior was examined. The effect of different weight percentage of silicon carbide, Boron carbide and fly-ash in composite on tensile strength, hardness, microstructure was studied. It was observed that the hardness & tensile strength of the composites increased with increasing reinforcement elements addition in it. The distribution of silicon carbide, Boron carbide and fly-ash particles was uniform in aluminum.
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Velavan, K., and K. Palanikumar. "Effect of Silicon Carbide (SiC) on Stir Cast Aluminium Metal Matrix Hybrid Composites – A Review." Applied Mechanics and Materials 766-767 (June 2015): 293–300. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.293.

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Nowadays, the usage of metal matrix composites is increased in aero space, automotive, marine, electronic and manufacturing industries. Aluminum metal matrix composites have attained significant attention due to their good mechanical properties like strength, stiffness, abrasion and impact resistant, corrosion resistance. When compared to the conventional materials Aluminum Silicon Carbide (AlSiC) hybrid materials available in minimum cost. In the present study, based on the literature review, the individual Silicon Carbide with aluminum and combined influence of Silicon Carbide with graphite reinforcements Aluminium Metal Matrix Composites and Silicon Carbide with mica reinforcement Aluminum is studied. The monolithic composite materials are combined in different compositions by stir casting fabrication techniques, to produce composite materials. The literature review framework in this paper provides a clear overview of the usage of Graphite and Mica as a reinforcing agent in different composition matrices along with its distinctive performances.
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Akinwamide, Samuel Olukayode, Serge Mudinga Lemika, Babatunde J. Obadele, Ojo Jeremiah Akinribide, Oluwasegun Eso Falodun, Peter Apata Olubambi, and Bolanle Tolulope Abe. "A Nanoindentation Study on Al (TiFe-Mg-SiC) Composites Fabricated via Stir Casting." Key Engineering Materials 821 (September 2019): 81–88. http://dx.doi.org/10.4028/www.scientific.net/kem.821.81.

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The limitations of aluminium in most engineering applications has led to the development of aluminium matrix composites with improved microstructural and mechanical properties. Nanoindentation techniques was used in assessing the mechanical properties of fabricated aluminium matrix composites with ferrotitanium and silicon carbide as reinforcements. Results from nanoindentation experiments shows the dependence of modulus of elasticity, microhardness and contact depth on the dispersion of ferrotitanium and silicon carbide reinforcements within the aluminium matrix. Highest nanohardness value was observed in composite with 7 wt. % silicon carbide, while the lowest elastic modulus was recorded in as-cast aluminium. Further analysis of specimens confirmed a decrease in maximum penetration depth with respective increase in the addition of silicon carbide reinforcements in the fabricated composites.
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Arslan, Gursoy, and Ayse Kalemtas. "Processing of silicon carbide–boron carbide–aluminium composites." Journal of the European Ceramic Society 29, no. 3 (February 2009): 473–80. http://dx.doi.org/10.1016/j.jeurceramsoc.2008.06.007.

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Jones, Mark Ian, Ron Etzion, Jim Metson, You Zhou, Hideki Hyuga, Yuichi Yoshizawa, and Kiyoshi Hirao. "Reaction Bonded Silicon Nitride - Silicon Carbide and SiAlON - Silicon Carbide Refractories for Aluminium Smelting." Key Engineering Materials 403 (December 2008): 235–38. http://dx.doi.org/10.4028/www.scientific.net/kem.403.235.

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The widely used Si3N4-SiC sidewall refractories for aluminum smelting cells, and β SiAlON-SiC composites that can be potentially used for this purpose, have been produced by reaction bonding and their corrosion performance assessed in simulated aluminum electrochemical cell conditions. The formation of the Si3N4 and SiAlON phases were studied by reaction bonding of silicon powders in a nitrogen atmosphere at low temperatures to promote the formation of silicon nitride, followed by a higher heating step to produce β SiAlON composites of different composition. The corrosion performance was studied in a laboratory scale aluminum electrolysis cell where samples were exposed to both liquid attack from molten salt bath and corrosive gas attack. The corrosion resistance of the samples was shown to be dependent on the composition but more importantly on the environment during corrosion, with samples in the gas phase showing higher corrosion.
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Eckstein, Marco, Christian Koppka, Sebastian Thiele, Yan Mi, Rui Xu, Yong Lei, Bernd Hähnlein, Frank Schwierz, and Jörg Pezoldt. "MOCVD Compatible Atomic Layer Deposition Process of Al2O3 on SiC and Graphene/SiC Heterostructures." Materials Science Forum 924 (June 2018): 506–10. http://dx.doi.org/10.4028/www.scientific.net/msf.924.506.

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Aluminium oxide was deposited on silicon, silicon carbide and epitaxial graphene grown on silicon carbide by atomic layer deposition using a standard MOCVD equipment. The morphology and the electrical properties of the aluminium oxide layers on both substrates were determined and compared to aluminium oxide layers deposited with a standard atomic layer deposition equipment. The high-k material fabricated with the developed MOCVD process show comparable or better properties compared to the standard atomic layer deposition process.
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Ureña, A., E. Otero, M. V. Utrilla, and P. Rodrigo. "Mecanismos de corrosión en materiales compuestos de matriz de aluminio con refuerzo de SiC." Boletín de la Sociedad Española de Cerámica y Vidrio 43, no. 2 (April 30, 2004): 233–36. http://dx.doi.org/10.3989/cyv.2004.v43.i2.510.

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Krishnamurthy, L., B. K. Sridhara, and D. Abdul Budan. "Comparative study on the machinability aspects of aluminium-silicon carbide and aluminium-graphite-silicon carbide hybrid composites." International Journal of Machining and Machinability of Materials 10, no. 1/2 (2011): 137. http://dx.doi.org/10.1504/ijmmm.2011.040858.

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Dhandapani, P., and K. R. Ravi. "Synthesis and Characterization of Particulate SiCp Reinforced Al-Si-Mg Alloy Composite with Varying Si Content." Advanced Materials Research 585 (November 2012): 301–5. http://dx.doi.org/10.4028/www.scientific.net/amr.585.301.

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Amongst the Metal Matrix Composites (MMCs), Al-Si-Mg alloy/ SiCp MMCs are very attractive for their properties. But, the formation of brittle interfacial reaction product, Aluminium carbide has been one of the major concerns when these materials are processed by liquid phase methods. The extent of Aluminium carbide formation depends on various processing parameters such as temperature, wt% of SiCp, particle size of SiCp and chemical composition of the matrix alloy especially Silicon (Si) content. According to recent studies, various difficulties in finding the process parameters to get desirable properties of Al alloy/ SiCp MMCs as desired by the industries. Thus, in the present study thermodynamic & structural estimates in Al alloy/ SiCp MMCs under various process conditions, composition, microstructures were performed. The relatively low cost liquid stir casting technique is used in the production of Al alloy/ SiCp MMCs with varying Silicon content (0–7%) in the alloy matrix using process temperature 710°C. Aluminium carbide layer formation on SiCp surface, Critical Si content for Aluminium carbide separation from SiCp surface, eutectic Si formation, existence of near-dislocation segregation regions after formation of Aluminium carbide on SiCp surface and the equilibrium amount of Si to suppress Aluminium carbide formation were investigated using Transmission electron microscopy (TEM). The separation of Aluminium carbide from SiCp surface was observed after 3% Si. The equilibrium Si content of 7% was found to suppress the formation of Aluminium carbide with thermodynamic model and its significance has been assessed.
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Krishnamurthy, L., G. L. Shekar, D. Abdul Budan, and B. K. Sridhara. "Machinability Assessment of Aluminium-Graphite-Silicon Carbide Hybrid Composites." Advanced Materials Research 894 (February 2014): 22–26. http://dx.doi.org/10.4028/www.scientific.net/amr.894.22.

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Aluminium silicon carbide particulate composites have wide ranging applications in automobile, aerospace and military industries because of their attractive properties such as high strength-to weight ratio, high wear resistance, high temperature stability etc. From the machining point of view, these are one of the most difficult-to-machine materials, primarily due to the presence of SiC reinforcements causing an excessive wear of cutting tools during machining. On the other hand aluminium-graphite composites are widely used in tribological applications because of their excellent antifriction properties, wear resistance and antiseizure characteristics. Investigations have been carried out in this work to assess the machinability of aluminium matrix composites containing both SiC and graphite particulates as reinforcements. Turning experiments have been conducted on Aluminium-Graphite-Silicon Carbide hybrid composites using Carbide and PCD tool inserts to determine the flank wear. Experiments have been carried out based on Central Composite Design approach.
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Dissertations / Theses on the topic "Aluminium silicon carbide"

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Ferro, Alberto Eduardo Morao Cabral. "Aluminium brazes for silicon carbide ceramics." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317212.

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Maensiri, Santi. "Thermal shock resistance of sintered alumina/silicon carbide nanocomposites." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365329.

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Ren, Zheng Materials Science &amp Engineering Faculty of Science UNSW. "Mechanical properties of 7075 aluminium matrix composites reinforced by nanometric silicon carbide particulates." Awarded by:University of New South Wales, 2007. http://handle.unsw.edu.au/1959.4/34742.

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Aluminium composites reinforced by particles have received considerable attention because of their superior mechanical properties over monolithic aluminum matrix. Over the last ten years, nanocomposites with nano-sized reinforcements have become a revolutionary progress for composites because they have different strengthening mechanisms as compared to that in composites with micro-sized reinforcements. Consequently novel properties can be expected from the nanometric particulate reinforced composites. The aim of this project was to fabricate SiC (50nm)/7075 aluminium composites via a modified powder metallurgy and extrusion route. Ageing treatment was used to increase the strength of the composites and mechanical tests, including tensile test and abrasive wear test, were performed. The effects of nanometric silicon carbide particulates to the ageing behaviours and mechanical properties of the composites have been studied by optical metallography, scanning electron microscopy and transmission electron microscopy. It was found that the dispersion of nanometric silicon carbide was not homogeneous, but tended to disperse along grain boundaries. Clustering of these nano-reinforcements was also found within the grains. This was particular true when the amount of nano-reinforcement increased to 5%. Compared with the monolithic 7075 alloy, the 1 vol.% SiC (50nm)/7075 aluminium had a higher strength because of effective dislocation pinnings by the reinforcements, while 5% SiC (50nm)/7075 had a much lower strength and ductility because of severe aggregation of nanometric particulates. Nanometric silicon carbide was not as effective as the micro ones in improving abrasive wear resistance of aluminium, this was because of micro-cracking in the aggregation and relatively large abrasive grit. In summary, the addition of a small amount of SiC nanoreinforcements has a high potential to further strengthen 7xxx aluminium alloy. However, the clustering of reinforcements in the matrix will detrimentally affect the strength and ductility of the alloy. The wear resistance of nanometric particulate reinforced composites was inferior to those with micrometric reinforcements. It is suggested that by improving the dispersion of nanometric reinforcements, as well as putting in reinforcememts with different sizes, the mechanical properties and wear resistance can both be increased.
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Jammula, Chaitanya Krishna. "Correlating the microstructure with wear properties of aluminium silicon carbides." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell produktutveckling, produktion och design, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-45820.

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Aluminium is one of the metals playing a prominent role in automobile industry after cast iron. Because of its light weight property and good mechanical properties. When aluminium reinforced with silicon carbide showing good tribological properties and improved strength. Aluminium silicon carbide needs some good wear and frictional properties to use it as break disc. Aluminium reinforced with 15% and 20% silicon carbide and casted in two different ways, liquid casting and stir casting. Four different composites are compared in this paper. Hardness test was carried out on the samples. Increase in the Vickers hardness with increase in silicon carbide reinforcement for both the castings is observed. Rockwell C hardness is showing decreasing trend with increase in SiC reinforcement. The scratch resistance of the surface under micro level was analysed with the help of nano scratch test. The SiC particles in the aluminium matrix are resisting the indenter from deep deformation of the surface. Frictional forces are dropped whenever the indenter met the SiC particles. In other cases, SiC particles are deforming the aluminium matrix in the form of broken particles. The plastic deformation of aluminium is observed, and material is piled up on sideways of groove at high load.Sliding wear behaviour of the composites are investigated by means of reciprocating pin on plate wear rig. The test was carried out at load of 20N for five different sliding duration. Aluminium with 20% silicon carbide of liquid casting is used as a base metal. The worn-out surface of the samples is analysed in SEM. The metallography of the worn-out samples is showing some deep grooves and abrasion of the material. Wear debris from both the surfaces are forming into a cluster of layers. These layers are protecting the surface from wear in some areas were observed. Composition of tribo layer formed during the test was investigated with the help of EDS analysis. The tribo layer are rich in aluminium and silicon elements because both the samples are made of aluminium silicon carbide.
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Sparks, Christopher Nigel. "Hot formability and microstructural development of spray-deposited Al-Li alloy and composite." Thesis, University of Sheffield, 1994. http://etheses.whiterose.ac.uk/1805/.

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The deformational and microstructural behaviour of the commercial Al-Li alloy 8090 and an 8090 based composite containing silicon carbide particulate has been investigated. The materials were deformed at elevated temperature by the test methods of plane strain compression (PSC) and torsion to provide stress-strain data for the formulation of constitutive relationships. Torsion testing also provided high temperature ductility data. Isothermal annealing of rolled samples was carried out at the solution temperature of 530°C to investigate the recrystallisation kinetics and microstructures produced, with particular emphasis on the effect of the inclusion of reinforcement particles on the behaviour of the matrix alloy. Hyperbolic sine forms of constitutive equation have been produced and are found to provide good agreement with the experimental data. High values of the activation energy are calculated for the deformation of both the alloy and composite from the PSC test data. The equations obtained from the two different test methods are found to be comparable for the composite material, but a discrepancy is found for the monolithic alloy, where apparently less hardening results from torsion testing. A distinct transition in microstructure from recrystallised equiaxed grains when deformed at low temperature to an elongated, sometimes partially recrystallised, structure for material rolled at high temperature is present in the monolithic material. This is attributed to the balance of recrystallisation driving force and the Zener pinning force exerted by the 13' (A1 3Zr) phase. The composite material exhibited greatly enhanced recrystallisation kinetics in agreement with the theory of particle stimulated nucleation (PSN) of recrystallisation.
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Zetterling, Carl-Mikael. "Silicon dioxide and aluminium nitride as gate dielectric for high temperature and high power silicon carbide MOSFETs." Doctoral thesis, KTH, Electronic Systems Design, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2514.

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Silicon carbide (SIC) is a wide bandgap semiconductor thathas been suggested as a replacement for silicon in applicationsusing high voltages, high frequencies, high temperatures orcombinations thereof. Several basic process steps need to bedeveloped for reliable manufacturing of long-term stableelectronic devices. One important process step is the formationof an insulator on the silicon carbide surface that may be usedas a) a gate dielectric, b) for device isolation or c) forpassivation of the surface. Silicon dioxide and aluminumnitride have been suggested for these purposes. This thesiscovers the investigation of some formation methods for boththese materials on 4H and 6H silicon carbide, and theelectrical characterisation of the resulting films.

Commercially available n-type and p-type 4H and 6H SICwafers have been used, and both the silicon face and the carbonface have been investigated. Silicon dioxide has been formed byseveral methods: a) dry thermal oxidation with or without theaddition of TCA (trichloroethane), b) wet oxidation inpyrogenic steam or with awater bubbler, c) oxide deposition byPECVD (plasma enhanced chemical vapor deposition) or LPCVD (lowpressure chemical vapor deposition) and d) oxidation of aevaporated or LPCVD deposited sacrificial layer of silicon. Theinfluence of various cleaning methods prior to oxidation hasbeen studied, as well as post-oxidation and post-metallisationannealing. The aluminum nitride films were grown by MOCVD(metal organic chemical vapor deposition) under various processconditions.

Oxidation kinetics have been studied for dry thermaloxidation at 1200 0C. The redistribution of aluminum (p-typedopant in SiC) during dry thermal oxidation has beeninvestigated using SIMS (secondary ion mass spectrometry). Themorphology of the aluminum nitride was determined using x-raydiffraction rocking curves, RHEED (reflection high energyelectron diffraction) and AFM (atomic force microscopy). Thequality of the silicon dioxide used as gate dielectric has beendetermined using breakdown field measurements. High frequencycapacitance-voltage measurements have been used on bothinsulators to a) verify thickness measurements made with othermethods, b) to determine fixed oxide charges by measuring theflatband voltage shifts and c) to quantitatively compare theamount of interface states.

For electrical characterisation either aluminum, titanium ordoped polysilicon circular gate contacts of various sizes wereformed on the insulator surface. Flat MOS capacitors weremainly used for the electrical characterisation. U-grooved MOScapacitors, manufactured by RIE (reactive ion etching), wereused to test the quality of oxides grown on vertical surfaces.Two types of MOSFETs (metal oxide semiconductor field effecttransistors) have been fabricated: vertical U-grooved andlateral devices.

Keywords:silicon carbide, thermal oxidation, silicondioxide, metal organic chemical vapor deposition (MOCVD),aluminum nitride, capacitance-voltage measurements, MOSFET.

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Kaminski, Piotr M. "Remote plasma sputtering for silicon solar cells." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13058.

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The global energy market is continuously changing due to changes in demand and fuel availability. Amongst the technologies considered as capable of fulfilling these future energy requirements, Photovoltaics (PV) are one of the most promising. Currently the majority of the PV market is fulfilled by crystalline Silicon (c-Si) solar cell technology, the so called 1st generation PV. Although c-Si technology is well established there is still a lot to be done to fully exploit its potential. The cost of the devices, and their efficiencies, must be improved to allow PV to become the energy source of the future. The surface of the c-Si device is one of the most important parts of the solar cell as the surface defines the electrical and the optical properties of the device. The surface is responsible for light reflection and charge carrier recombination. The standard surface finish is a thin film layer of silicon nitride deposited by Plasma Enhanced Chemical Vapour Deposition (PECVD). In this thesis an alternative technique of coating preparation is presented. The HiTUS sputtering tool, utilising a remote plasma source, was used to deposit the surface coating. The remote plasma source is unique for solar cells application. Sputtering is a versatile process allowing growth of different films by simply changing the target and/or the deposition atmosphere. Apart from silicon nitride, alternative materials to it were also investigated including: aluminium nitride (this was the first use of the material in solar cells) silicon carbide, and silicon carbonitride. All the materials were successfully used to prepare solar cells apart from the silicon carbide, which was not used due to too high a refractive index. Screen printed solar cells with a silicon nitride coating deposited in HiTUS were prepared with an efficiency of 15.14%. The coating was deposited without the use of silane, a hazardous precursor used in the PECVD process, and without substrate heating. The elimination of both offers potential processing advantages. By applying substrate heating it was found possible to improve the surface passivation and thus improve the spectral response of the solar cell for short wavelengths. These results show that HiTUS can deposit good quality ARC for silicon solar cells. It offers optical improvement of the ARC s properties, compared to an industrial standard, by using the DL-ARC high/low refractive index coating. This coating, unlike the silicon nitride silica stack, is applicable to encapsulated cells. The surface passivation levels obtained allowed a good blue current response.
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Lopes, Nuno Filipe Ferreira. "Development and implementation of strategies for the incorporation of reinforcing elements in aluminium alloys by solid state processing." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/7809.

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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica
This investigation aimed to study new surface processing strategies to produce reinforced surface metal matrix composites by Friction Stir Processing. The first consisted on pre-placing reinforcing particles over the surface, while the second used consumables drilled holes filled with reinforcing particles. Each strategy was investigated using an electric current in a process under patenting. Aluminium AA5083-H111 plates were used as base material. Silicon carbide and alumina particles with median sizes of 35 and 45 μm, respectively, were used. Pre deposition of reinforcing particles proved to be more effective than the use of consumable tools packed with particles. The last ones produced coatings with a non homogeneous distribution and poor bonding between the substrate and the reinforcing coating. The pre deposition of alumina produced a higher extension and depth of reinforced layer and an increase in hardness of 60%, while silicon carbide produced an increase in hardness of 300 %, though in a smaller extension and depth than alumina under the same processing conditions. Using the electric current a significant raise of 500% and 40% was observed in extension and depth respectively, but hardness decreased by 10 %.
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Suvanam, Sethu Saveda. "Radiation Hardness of 4H-SiC Devices and Circuits." Doctoral thesis, KTH, Integrerade komponenter och kretsar, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199907.

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Advances in space and nuclear technologies are limited by the capabilities of the conventional silicon (Si) electronics. Hence, there is a need to explore materials beyond Si with enhanced properties to operate in extreme environments. In this regards, silicon carbide (4H-SiC), a wide bandgap semiconductor, provides suitable solutions. In this thesis, radiation effects of 4H-SiC bipolar devices, circuits and dielectrics for SiC are investigated under various radiation types. We have demonstrated for the first time the radiation hardness of 4H-SiC logic circuits exposed to extremely high doses (332 Mrad) of gamma radiation and protons. Comparisons with previously available literature show that our 4H-SiC bipolar junction transistor (BJT) is 2 orders of magnitude more tolerant under gamma radiation to existing Si-technology. 4H-SiC devices and circuits irradiated with 3 MeV protons show about one order of magnitude higher tolerance in comparison to Si. Numerical simulations of the device showed that the ionization is most influential in the degradation process by introducing interface states and oxide charges that lower the current gain. Due to the gain reduction of the BJT, the voltage reference of the logic circuit has been affected and this, in turn, degrades the voltage transfer characteristics of the OR-NOR gates. One of the key advantages of 4H-SiC over other wide bandgap materials is the possibility to thermally grow silicon oxide (SiO2) and process device in line with advanced silicon technology. However, there are still questions about the reliability of SiC/SiO2 interface under high power, high temperature and radiation rich environments. In this regard, aluminium oxide (Al2O3), a chemically and thermally stable dielectric, has been investigated. It has been shown that the surface cleaning treatment prior to deposition of a dielectric layer together with the post dielectric annealing has a crucial effect on interface and oxide quality. We have demonstrated a new method to evaluate the interface between dielectric/4H-SiC utilizing an optical free carrier absorption technique to quantitative measure the charge carrier trapping dynamics. The radiation hardness of Al2O3/4H-SiC is demonstrated and the data suggests that Al2O3 is better choice of dielectric for devices in radiation rich applications.

QC 20170119

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Ferreira, Lygia Maria Policarpio 1987. "Fabricação de materiais compósitos por tixoconformação de misturas de cavacos de alumínio com pós cerâmicos." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263611.

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Orientador: Maria Helena Robert
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-23T10:48:15Z (GMT). No. of bitstreams: 1 Ferreira_LygiaMariaPolicarpio_M.pdf: 14529538 bytes, checksum: f34c04de7772ea86ea3d164ba7a34c41 (MD5) Previous issue date: 2013
Resumo: Este trabalho explora a aplicação da tecnologia de metais semi-sólidos para a fabricação de compósitos de matriz metálica (CMM), e ainda a possibilidade de reciclagem de cavacos de usinagem para a produção destes materiais, buscando o desenvolvimento de uma engenharia de baixo custo. São empregados como matriz a liga AA7075, dada a grande geração de cavacos de usinagem na indústria aeronáutica, e SiC ou NiAl2O4 particulados como reforços. O processo é baseado na tixoconformação de misturas de cavacos e partículas de reforço; é esperada a penetração destas últimas em contornos de glóbulos, contendo líquido, no interior do cavaco no estado semi-sólido. São avaliados parâmetros de processo e sua influência na qualidade do produto, em particular na distribuição de reforço na matriz e interação matriz/reforço. Compósitos tixoconformados contendo 10, 20 e 30% em peso de SiC são avaliados mecanicamente através de ensaios de microindentação instrumentada e desgaste micro-abrasivo. Os resultados mostraram, de modo geral, a viabilidade do processo proposto para a fabricação de diferentes tipos de compósitos, o qual envolve procedimento simples e de reduzido custo, além de mostrar a possibilidade de produção de materiais com boas propriedades mecânicas a partir da reciclagem de cavacos, particularmente importante em uma indústria que envolve elevada demanda de energia, como a do Al. Os resultados indicaram que a qualidade geral do produto, em termos de distribuição do reforço e interação reforço/matriz dependem da adequada seleção dos parâmetros de processo: temperatura, tempo de aquecimento, pressão de tixoconformação. Entre as várias condições estudadas, as composições nas quais foi utilizado NiAl2O4 como reforço apresentaram melhores características microestruturais, com melhor interface entre matriz e reforço e baixa porosidade. Boa dispersão das partículas de reforço e baixa porosidade também foram observados para compósitos reforçados com SiC nos quais foram adicionadas partículas finas de silício e alumina
Abstract: This work explores the application of semi-solid technology to produce metal matrix composites, and also the possibility of using machining chips as raw material. The main aim is to develop a process inserted in a low cost engineering concept. To achieve this general objective, the alloy AA7075 is used as matrix, once a significant amount of rejected chips of this high resistance, low weight alloy is generated in the aeronautical industry. As reinforcing material, SiC or NiAl2O4 particles are used. The proposed process is based on the thixoforming of pre-compacted mixtures of chips and reinforcing particles; it is expected the penetration of reinforcing particles within the semi-solid, thixotropic material. It is analyzed the influence of processing parameters in the final quality of products, particularly in the reinforcement dispersion in the matrix and matrix/reinforcement interface. Thixoformed composites containing 10, 20 and 30% weight SiC are produced and evaluated concerning mechanical properties through indentation tests and micro wear. Results showed the general viability of producing composites by the proposed technique, based on a simple and low cost procedure. It was also shown the possibility of producing materials with good mechanical properties from recycled chips, which is particularly important in the high energy demanding Aluminium industry. Results showed the importance of choosing appropriate processing parameters (temperature, heating rate / soaking time and thixoforming pressure), to achieve desired product quality. Among the various conditions studied, the compositions in which NiAl2O4 was used as reinforcement showed better microstructural characteristics with better interface between matrix and reinforcement, and lower porosity. Good dispersion of the reinforcement particles and low porosity were also observed for SiC reinforced composites in which fine particles of silicon and alumina were added
Mestrado
Materiais e Processos de Fabricação
Mestra em Engenharia Mecânica
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Books on the topic "Aluminium silicon carbide"

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Onat, Adem. Silicon carbide particulate reinforced aluminum alloys matrix composites fabricated by squeeze casting method. New York: Nova Science Publishers, 2011.

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Buarzaiga, Mohamed M. Corrosion behavior of as-cast silicon carbide particulate/aluminum alloy metal-matrix composites. Ottawa: National Library of Canada, 1994.

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May, Christopher William. Effect of thermomechanical treatments on the aging response of centrifugally cast silicon carbide/aluminum composites. Monterey, Calif: Naval Postgraduate School, 1992.

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H, Laakso John, and Langley Research Center, eds. System integration and demonstration of adhesive bonded high temperature aluminum alloys for aerospace structure: Phase II. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1993.

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United States. National Aeronautics and Space Administration., ed. Influence of alumina reaction tube impurities on the oxidation of chemically-vapor-deposited silicon carbide. [Washington, DC: National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. Influence of alumina reaction tube impurities on the oxidation of chemically-vapor-deposited silicon carbide. [Washington, DC: National Aeronautics and Space Administration, 1995.

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Characterization of metal matrix composites. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Book chapters on the topic "Aluminium silicon carbide"

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Jones, Mark I., Ron Etzion, Jim Metson, You Zhou, Hideki Hyuga, Yuichi Yoshizawa, and Kiyoshi Hirao. "Reaction Bonded Silicon Nitride - Silicon Carbide and SiAlON - Silicon Carbide Refractories for Aluminium Smelting." In SiAlONs and Non-oxides, 235–38. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908454-00-x.235.

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Gribkov, A. N. "Composites of the aluminium—silicon carbide system." In Metal Matrix Composites, 440–86. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-1266-6_8.

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Malhotra, Paridhi, R. K. Tyagi, Nishant K. Singh, and Basant Singh Sikarwar. "Comparative Microstructural Investigation of Aluminium Silicon Carbide–Mg and Aluminium Boron Carbide–Mg Particulate Metal Matrix Composite Fabricated by Stir Casting." In Lecture Notes in Mechanical Engineering, 725–34. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5463-6_64.

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le Roux, T., M. L. H. Wise, and D. K. Aspinwall. "Electric Discharge Machining of an Aluminium Alloy Silicon Carbide Reinforced Metal Matrix Composite." In Proceedings of the Thirtieth International MATADOR Conference, 247–54. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-13255-3_32.

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Ur-rehman, N., P. Brown, and L. J. Vandeperre. "Evolution of the ALN Distribution during Sintering of Aluminium Nitride Doped Silicon Carbide." In Ceramic Engineering and Science Proceedings, 231–38. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470944004.ch20.

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Ur-rehman, N., P. Brown, and L. J. Vandeperre. "The Role of Carbon in Processing Hot Pressed Aluminium Nitride Doped Silicon Carbide." In Mechanical Properties and Performance of Engineering Ceramics and Composites V, 27–34. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470944127.ch4.

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Shanmugaselvam, P., R. Sasikumar, and S. Sivaraj. "Investigation of Hardness and Tribological Behaviour of Aluminium Alloy LM30 Reinforced with Silicon Carbide, Boron Carbide and Graphite." In Lecture Notes in Mechanical Engineering, 569–76. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6374-0_62.

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Arora, Chayan, Mohit Gupta, Ayush Kaushik, Jeevan Singh Bisht, and Pallav Gupta. "Fabrication and Mechanical Characterization of Aluminium Alloy Reinforced with Silicon Carbide and Fly Ash." In Lecture Notes in Mechanical Engineering, 419–27. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4684-0_43.

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Funaki, Katsuyuki, Yukio Nanayama, Yoshiji Ichimaru, Yukio Hirose, and Keisuke Tanaka. "X-Ray Study On Fatigue Fracture Surfaces of Aluminium Alloy Reinforced With Silicon Carbide Whiskers." In Advances in X-Ray Analysis, 651–59. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3744-1_69.

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Namdeo, Dombale Sachin, Gadave Subhash, and Vishal Jagadale. "An Experimental Study of Effect of Silicon Carbide on Mechanical Properties of Aluminium Based Composite." In Techno-Societal 2018, 823–30. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16962-6_83.

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Conference papers on the topic "Aluminium silicon carbide"

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Karthikeyan, R., G. Ganesan, R. S. Naagarazan, and B. C. Pai. "OPTIMISATION OF DRILLING CHARACTERISTICS OF ALUMINIUM-SILICON CARBIDE PARTICULATE COMPOSITES." In Processing and Fabrication of Advanced Materials VIII. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811431_0104.

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Karthikeyan, R., S. Ravi, P. S. Raju, R. S. Naagarazan, and P. C. Pai. "A STUDY ON CHIP FORMATION OF AN ALUMINIUM ALLOY - SILICON CARBIDE COMPOSITES." In Processing and Fabrication of Advanced Materials VIII. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811431_0110.

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Khor, K. A., F. Boey, and T. Sano. "Aluminium Lithium (Al-Li) - Silicon Carbide (SiC) Composites by Powder Metallurgy (PM) Route." In International Pacific Air & Space Technolgy Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/940055.

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Jeyapaul, R., and S. Sivasankar. "Optimization and modeling of turning process for aluminium - silicon carbide composite using Artificial Neural Network Models." In 2011 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM). IEEE, 2011. http://dx.doi.org/10.1109/ieem.2011.6118021.

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Jeyapaul, R., and S. Sivasankar. "Optimization and modeling of turning process for aluminium - silicon carbide composite using Artificial Neural Network Models." In 2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS 2011). IEEE, 2011. http://dx.doi.org/10.1109/imws.2011.6115253.

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Emmanual, L., L. Ragunath, and T. Karthikeyan. "Wear behaviour on composite of aluminium 6063 alloy with silicon carbide and granite by stir casting method." In INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5117940.

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Ankegowda, Naveen, S. A. Mohan Krishna, and B. S. Nithyananda. "Characterization Of Mechanical And Tribological Behaviour Of Aluminium-Silicon Carbide-Titanium Dioxide Hybrid Metal Matrix Composites(MMC)." In Third International Conference on Current Trends in Engineering Science and Technology ICCTEST-2017. Grenze Scientific Society, 2017. http://dx.doi.org/10.21647/icctest/2017/49067.

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Ramu, Gurupavan Hurugalavadi, Holalu Venkatadas Ravindra, and Devegowda Tadagavadi Muddegowda. "Effect of Wire Electrode Materials on Performance Characteristics for Wire Electrical Discharge Machining of Metal Matrix Composite Material." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23511.

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Abstract Composite materials are the advanced materials which are widely used in manufacturing industries. The most commonly used composite materials are metal matrix composites. Due to the presence of abrasive reinforcing particles, traditional machining of these causes severe tool wear and hence reduces the life of cutting tool. Wire electrical discharge machining (WEDM) is quite successful for machining of metal matrix composites. Wire Electrical Discharge machining is a specialized thermal machining process capable of accurately machining parts of hard materials with complex shapes. One of the main research fields in WEDM is related to the improvement of the process productivity by avoiding wire breakage. Wire electrodes used in WEDM are the core of the system. In this study the effect of different wire electrode materials on electrode wear and surface finish for wire electrical discharge machining of metal matrix composite material were investigated. The experiments were conducted under the following process parameters viz., pulse-on time, pulse-off time, wire feed speed and current. For the experiment the aluminium 6061 alloy with 0%, 5%, and 10% of silicon carbide (SiC) reinforcement material was used. To conduct the experiment CNC wire EDM machine with two different wires viz., molybdenum and brass wire was used. Experimental results indicate that for better surface finish of Al6061 alloy, the brass wire is more suitable. The use of brass wire as electrode material leads to significant reduction in electrode wear in machining of Al-5%SiC and Al-10%SiC composite materials compare to molybdenum wire. Increasing percentage of silicon carbide in aluminium 6061 alloy increases the variation in surface finish and electrode wear. Wire wear rate of both brass and molybdenum wire is increased with increase in percentage of silicon carbide.
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Chen, Yujie, Justin L. Milner, Cristina Bunget, Laine Mears, and Thomas R. Kurfess. "Investigations on Performance of Various Ceramic Tooling While Milling Nickel-Based Superalloy." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1220.

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One of the most cost-effective dimensionally accurate processes used in manufacturing today, that is capable of producing a superior surface finish, is machining. As tooling wears, however, the advantages of machining greatly diminish. In addition, the time lost changing out the tooling significantly affects the overall process efficiency. Therefore, methods that decrease the wear rate of tooling and, thereby, increase tool longevity is essential to improving the efficiency of machining. Optimizing the machining feeds and speeds is one method that has been demonstrated to significantly increase the wear resistance of traditional tooling materials such as HSS, tungsten carbide and advanced ceramic tooling. However, the effects of machining feeds and speeds are not well established for γ′–strengthened nickel-based superalloys. In addition, round geometry inserts were studied due to the rising popularity in industry, since there are an increased number of cutting edges. To help establish these effects, in this work, commercial grade SiAlON (Silicon Aluminium Oxynitride) and Si-WRA (Silicon Carbide Whiskers Reinforced Alumina) cutting inserts are compared. Milling tests were conducted on a γ′–strengthened nickel-based superalloy. More specifically, tool life, machining forces and power were analyzed to evaluate the performance improvements of ceramic tooling. This study found that the abrasive/adhesion flank wear was the main failure mechanism of the ceramic inserts.
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Boschetto, A., and F. Veniali. "Wear of HFACVD Diamond Coated Tools in Turning of MMC." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58586.

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HFACVD (Hot Filament Assisted Chemical Vapour Deposition) is a typical technology which permits the coating of soft materials with hard or super hard layers which lead to ultra wear resistant tools. Typical tools obtained with this technology are based on a diamond layer. Unfortunately, these tools are not suitable for machining of ferrous alloys due to chemical issues, yet their use is very promising in the machining of composites based on aluminium matrix and reinforced with alumina or silicon carbide. In this paper HFACVD diamond coated, WC and PCD tools are used in turning of Al2O3/Al composites until they are completely worn out. The results show that the diamond tools can be competitive with both the WC and PCD ones in the industrial applications.
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Reports on the topic "Aluminium silicon carbide"

1

Slusarcyk, Joe. Aluminum/Silicon Carbide Matrix Material for Targeting System. Fort Belvoir, VA: Defense Technical Information Center, July 2006. http://dx.doi.org/10.21236/ada482737.

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MARYLAND UNIV COLLEGE PARK. Aluminum / Silicon Carbide Matrix Material Machining for Targeting Systems. Fort Belvoir, VA: Defense Technical Information Center, July 2006. http://dx.doi.org/10.21236/ada481261.

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Cross, M. T. Aluminum nitride-silicon carbide whisker composites: Processing, properties, and microstructural stability. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6381576.

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Mangin, Christophe. R-Curve Behavior for Silicon Carbide Whisker Reinforced Aluminum Oxide Composites. Fort Belvoir, VA: Defense Technical Information Center, January 1990. http://dx.doi.org/10.21236/ada233958.

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Kingon, A. I., R. F. Davis, and A. K. Singh. Integrated Synthesis and Post Processing of Silicon Carbide and Aluminum Nitride. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada230810.

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Howell, Paul R. Microstructural Development in a Spray Formed Aluminum-Silicon Carbide Based Metal Matrix Composite. Fort Belvoir, VA: Defense Technical Information Center, May 1992. http://dx.doi.org/10.21236/ada251425.

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Peacock, H. B. A feasibility study to determine blending characteristics and extrudability of aluminum and silicon carbide coated microspheres. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/6755791.

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Habermehl, Scott D., Peggy J. Clews, Sasha Summers, and Sukwon Choi. Computational and Experimental Characterization of Aluminum Nitride-Silicon Carbide Thin Film Composites for High Temperature Sensor Applications. Office of Scientific and Technical Information (OSTI), December 2014. http://dx.doi.org/10.2172/1490541.

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