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Journal articles on the topic 'Glass'

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1

Wang, Yu, Xiao Bing Ren, and Kazuhiro Otsuka. "Strain Glass: Glassy Martensite." Materials Science Forum 583 (May 2008): 67–84. http://dx.doi.org/10.4028/www.scientific.net/msf.583.67.

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“Glass”, a frozen disordered-state, has been found in areas as diverse as amorphous solids, magnetic alloys, ferroelectrics, superconductors, and even in models of biological evolutions. In the present review we introduce a new class of glass–the “strain-glass”, which was discovered very recently. Strain glass is derived from a martensitic system, where the local-strain is frozen in disordered configuration. The first example of strain glass was found in the well-studied Ni-rich Ti50-xNi50+x martensitic system in its “non-transforming” composition regime (x>1.5). Contrasting to the familiar
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2

Drajewicz, Marcin, and Jan Wasylak. "Properties of Glass Surface with Nano-Particles Aluminum Compounds Refined." Advanced Materials Research 39-40 (April 2008): 567–70. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.567.

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New refining technology of soda – lime – silicon glassy surfaces with aluminum compounds nano-molecules has been presented in the present study. Structural definition of aluminum compounds nano-powders exposed to thermal processing, including grain-size analysis has been discussed. Optimal technical and technological parameters of the refining process have been selected. Refining method of soda – lime – silicon glassy surfaces with aluminum compounds nanomolecules assures profitable operational properties of the glass, such as increased bending strength, scratching strength, micro hardness and
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3

Ma, H., E. Ma, and J. Xu. "A new Mg65Cu7.5Ni7.5Zn5Ag5Y10 bulk metallic glass with strong glass-forming ability." Journal of Materials Research 18, no. 10 (2003): 2288–91. http://dx.doi.org/10.1557/jmr.2003.0319.

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We report a new Mg-based bulk metallic glass-forming alloy: Mg65Cu7.5Ni7.5Zn5 Ag5Y10. The alloy exhibits a glass-forming ability significantly stronger than all previously discovered Mg-based glass formers. Fully glassy rods 9 mm in diameter can be obtained by using copper mold casting. The critical cooling rate for glass formation was estimated to be <50 Ks−1. The reduced glass-transition temperature (Trg) of the glass was determined to be 0.59.
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4

Dutcher, J. R., and M. D. Ediger. "Glass Surfaces Not So Glassy." Science 319, no. 5863 (2008): 577–78. http://dx.doi.org/10.1126/science.1155120.

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5

Zhang, L. C., Z. Q. Shen, and J. Xu. "Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying." Journal of Materials Research 18, no. 9 (2003): 2141–49. http://dx.doi.org/10.1557/jmr.2003.0300.

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In this work, glass formation under high-energy ball milling was investigated for a (Ti0.33Zr0.33Hf0.33)50(Ni0.33Cu0.33Ag0.33)40Al10 high-order alloy system with equiatomic substitution for early and late transition-metal contents. For comparison, an amorphous alloy ribbon with the same composition was prepared using the melt-spinning method as well. Structural features of the samples were characterized using x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. Mechanical alloying resulted in a glassy alloy similar to that obtained by melt spinning. Howev
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6

Kim, Hwan Sik, Yoo Taek Kim, Gi Gang Lee, Jung Hwan Kim, and Seung Gu Kang. "Corrosion of Silicate Glasses and Glass-Ceramics Containing EAF Dust in Acidic Solution." Solid State Phenomena 124-126 (June 2007): 1585–88. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1585.

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The corrosion behavior of glass and glass-ceramics fabricated with silicate glass frit mixed with 50~70 wt% EAF dust in the acidic solution was analyzed by both heavy metal leaching test and microstructural observation. The crystallization temperature, Tc of glassy specimens was around 850 measured by DTA and the heat treatment temperature to crystallize a glassy specimen was selected as 950 / 1 hr. The spinel crystal peaks were found in XRD analysis for the glass containing dust > 60 wt%. For the glass-ceramics, however, the spinel peaks in a specimen containing dust > 50 wt% was found
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7

Bhatt, Jatin, Sundaram Kumar, and B. S. Murty. "Thermodynamic Model and Synthesis of Bulk Metallic Glass in Cu-Zr-Ti System by Mechanical Alloying." Materials Science Forum 675-677 (February 2011): 189–92. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.189.

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Based on the thermodynamic and topological approach, Cu60Zr30Ti10 has been identified as the best bulk metallic glass forming composition in Cu-Zr-Ti system. Bulk metallic glass has been successfully produced using mechanical alloying of elemental blends and consolidation of the resulting glassy powders into pellets of 8 mm diameter. Dry sliding wear of glassy pellets at different annealed states showed that the relaxed metallic glass has excellent wear resistance.
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8

Ren, Xiaobing. "Strain glass and ferroic glass - Unusual properties from glassy nano-domains." physica status solidi (b) 251, no. 10 (2014): 1982–92. http://dx.doi.org/10.1002/pssb.201451351.

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9

Kim, Hyeong-Jun, Jewon Park, Hyein Na, Hyung Mi Lim, and Gabin Chang. "Improvement of Flame-Retardant Performance of Polyurethane Foam Coated with Water Glass." Fire Science and Engineering 34, no. 2 (2020): 7–13. http://dx.doi.org/10.7731/kifse.43a374e9.

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In this study, water glass was applied as a coating material to a rigid polyurethane foam to improve the flame-retardant properties of the foam. The heat release rate of the cone calorimeter of the urethane foam, in which the inorganic water-glass coating layer was applied, decreased rapidly. The water glass coated on the polyurethane surface formed a glassy foam by foaming with water, which did not escape during the vitrification reaction when the foam or glass was heated. The glassy foam formed on the polyurethane foam became a fire-resistant insulation layer that inhibited the combustion of
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10

Vila-Costa, A., J. Ràfols-Ribé, M. Gonzalez-Silveira, A. Lopeandía, J. Ll Tamarit, and J. Rodríguez-Viejo. "Multiple glass transitions in vapor-deposited orientational glasses of the most fragile plastic crystal Freon 113." Physical Chemistry Chemical Physics 21, no. 20 (2019): 10436–41. http://dx.doi.org/10.1039/c9cp00976k.

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11

Gautam, C. R., Devendra Kumar, Om Parkash, and O. P. Thakur. "Dielectric Properties of La2O3 Doped Composite (PbxSr1−x)TiO3 Borosilicate Glass Ceramic." Journal of Ceramics 2013 (December 5, 2013): 1–9. http://dx.doi.org/10.1155/2013/879758.

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Ferroelectric (PbxSr1−x)TiO3 (PST) perovskite phase has been crystallized in borosilicate glassy matrix with a suitable choice of composition and heat treatment schedule. La2O3 is a donor dopant for PST and can make it semiconducting. Dispersion of semiconducting perovskite phase in insulating glassy matrix in glass-ceramic samples may lead to the formation of space charge polarization around crystal-glass interface, leading to a high value of effective dielectric constant, εr. Therefore, with the aim of the developing glass ceramics with high dielectric constant, glasses in the system 64[(Pbx
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12

Verma, Arvind Kumar, Anchal Srivastava, R. K. Shukla, and K. C. Dubey. "Thermal Behavior of Chalcogenide glasses Te90Se10 and Se90Te10." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 7, no. 02 (2015): 113–18. http://dx.doi.org/10.18090/samriddhi.v7i2.8636.

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In the present research work melt quenching method has been adopted to prepare the glassy Te-rich (Te90Se10) and Se-rich (Se90Te10 ) Chalcogenide at a pressure of 10-2 Torr with constant Temperature at 1000°C for 8 hours. Devitrification characteristics of the pure glassy Chalcogenide Te90Se10 and Se90Te90 were investigated by using Differential scanning Calorimetry (DSC) 4000 Perkin Elmer. All the measurements carried out at fixed heating rate 10 0C/min under non-isothermal conditions. The Glass transition temperature (Tg) and other thermal properties were examined by temperature modulated di
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13

Vaiborisut, Napaporn, Chanittha Chunwises, Dararat Boonbundit, Sirithan Jiemsirilers, and Apirat Theerapapvisetpong. "Effect of the Addition of ZrSiO4 on Alkali-Resistance and Liquidus Temperature of Basaltic Glass." Key Engineering Materials 766 (April 2018): 145–50. http://dx.doi.org/10.4028/www.scientific.net/kem.766.145.

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Basalt fiber has been used as a reinforced material in cement-based materials because it has higher mechanical strength and cheaper than common silicate based glass-fibers. However, silicate-based glass fibers have low alkali resistance especially in cement matrix composite. In this work, we studied the improvement of alkali resistance by addition of zirconium silicate (ZrSiO4) in original basalt glass composition. The batch of basalt glass with additional ZrSiO4 contents of 0.00, 2.50, 5.00, 7.50 and 10.00 wt% were melted at 1500 °C. The liquidus temperature (TL) is important in for the fiber
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14

de Oliveira, Vera Lúcia Praxedes, Marcelo Henrique Prado da Silva, Eduardo de Sousa Lima, Claudinei dos Santos, and Luis Henrique Leme Louro. "Effect of Glassy Phase Additions to Zirconia on its Sintering Behavior and Microstructure." Materials Science Forum 727-728 (August 2012): 935–39. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.935.

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TZP yttria-stabilized zirconia powder was mixed with two types of glasses as sintering additives: CAS glass and a bioactive glass. These additions were designed toward the material applications as bioceramics. The glassy phase was chosen to promote liquid phase sintering at lower temperature, when compared to pure material. This procedure contributed to reduce the fabrication costs while keeping the material biocompatibility. Each type of glass was added in concentrations of 1, 3, and 5 wt%. The prepared powders were uniaxially pressed at 50 MPa, and then sintered at 1300°C for two hours. The
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15

Sharifi, Soheil, and Jahanbakhsh Mashaiekhy Asl. "Secondary Relaxation inside the Glass." ISRN Materials Science 2011 (July 20, 2011): 1–10. http://dx.doi.org/10.5402/2011/764874.

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The physical properties of the glass depend on the procedure used to produce the glass. In particular, if the glass is obtained through the variation of external thermodynamic parameters, the specific way in which the parameters are varied (thermodynamic history) has influence on the final properties. In this work, we studied the effect of thermodynamic history on secondary relaxation inside the glassy state on different molecular glass forming, namely, PPGE(poly[(phenyl glycidyl ether)-co-formaldehyde]), 1,18-bis (p methoxyphenyl) cyclohexane (BMPC), poly(propylene glycol)—(PPG400), phenolpht
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16

XIA, L., C. L. JO, and Y. D. DONG. "GLASS FORMING ABILITY OF HARD MAGNETIC Nd55Al20Fe25 BULK GLASSY ALLOY WITH DISTINCT GLASS TRANSITION." International Journal of Modern Physics B 19, no. 22 (2005): 3493–500. http://dx.doi.org/10.1142/s021797920503219x.

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Nd 55 Al 20 Fe 25 bulk sample was prepared in the shape of rods 3 mm in diameter by suction casting. The sample exhibits typical amorphous characters in XRD pattern, distinct glass transition in DSC traces and hard magnetic properties. The distinct glass transition, which is invisible in DSC traces of previously reported Nd — Al — Fe ternary BMGs, allows us to investigate the glass forming ability (GFA) of Nd 55 Al 20 Fe 25 alloy using the reduced glass transition temperature Trg and the recently defined parameter γ. However, it is found that the obtained diameter of the Nd 55 Al 20 Fe 25 glas
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17

Ramamurthy, Sundar, Brian C. Hebert, and C. Barry Carter. "Olivine-MgO interfaces produced by crystallization of glass fulms on single-crystal MgO substrates." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 342–43. http://dx.doi.org/10.1017/s0424820100138087.

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Glassy silicates are present at grain boundaries in almost all liquid-phase sintered ceramic oxides. In many cases, the amorphous-crystalline interfaces in the sintered microstructure can be modified by inducing crystallization of the glassy phase. The intergranular phases in polycrystalline MgO are typically silicates with cations of calcium, magnesium and iron in the silicate network. A systematic approach to study the crystallization behavior of glass-MgO interfaces has been attempted in the present study. Following the work by Mallamaci in which crystallization of a silicate glass in conta
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18

Kasuga, Toshihiro, Emiko Ueno, and Akiko Obata. "Preparation of Apatite-Containing Calcium Phosphate Glass-Ceramics." Key Engineering Materials 330-332 (February 2007): 157–60. http://dx.doi.org/10.4028/www.scientific.net/kem.330-332.157.

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A new type of glass-ceramic for novel dental fillers, which require excellent chemical durability, was investigated. A 40CaO-5CaF2-25TiO2-30P2O5 (in mol%) glass-ceramic was newly suggested. The glass-ceramic was prepared by a conventional two-step heating method. The resulting glass-ceramic included Nasicontype-CaTi4(PO4)6, titanium phosphates, such as (TiO)2P2O7 and Ti(PO3)3, and TiO2 (anatase) with apatite crystal, which was induced by incorporation of fluorine. In the glass-ceramic, dissolution by acid-treatment was strictly controlled. The excellent chemical durability of the glass-ceramic
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19

Buonsante, P., F. Massel, V. Penna, and A. Vezzani. "Glassy features of a Bose glass." Laser Physics 18, no. 5 (2008): 653–58. http://dx.doi.org/10.1134/s1054660x08050174.

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20

PARK, JONGEE, and ABDULLAH OZTURK. "BIOACTIVITY OF APATITE–WOLLASTONITE GLASS-CERAMICS PRODUCED BY MELTING CASTING." Surface Review and Letters 20, no. 01 (2013): 1350010. http://dx.doi.org/10.1142/s0218625x13500108.

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Glass-ceramics containing only apatite and wollastonite crystals were produced in the system MgO-CaO-SiO2-P2O5-F by the melt casting process. The bioactivity of the glass-ceramics was determined by immersing the glass-ceramics in a simulated body fluid (SBF) and by assessing the resulting apatite formation on the free surface after various immersion durations. A 12-μm-thick apatite layer formed on the surface of the glass-ceramic containing only apatite crystals after 20 days immersion in SBF. However, the thickness of the apatite layer formed on the surface of the glass-ceramic containing apa
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21

Zhu, Sheng Li, Guo Qiang Xie, Akihisa Inoue, Zhen Duo Cui, Xian Jin Yang, and Wei Zhang. "Effects of Minor Additions on Ni- and Be-Free Ti-Based Bulk Glassy Alloys." Materials Science Forum 833 (November 2015): 79–84. http://dx.doi.org/10.4028/www.scientific.net/msf.833.79.

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We investigated the effects of addition elements (Sn, Al, Si, Ag, Fe, Cr) with a small amount on the glass-forming ability, thermal stability and mechanical properties of the Ti-Zr-Cu-Pd glassy alloy system. The results revealed that minor Sn addition improved the glass-forming ability, thermal stability and plasticity, Si addition enlarged the supercooled liquid region, and Fe addition improved the plasticity, while minor additions of Si, Ag, Fe, and Cr lowered the glass-forming ability, and Al and Cr additions were harmful to the plasticity of the Ti-Zr-Cu-Pd glassy alloy system.
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22

Schibille, Nadine, Jorge De Juan Ares, and Fabiola Monzón Moya. "Through a Glass Brightly: Islamic Glass Inlays in the Convent of Santa Fe in Toledo (Spain)." Glass Europe 3 (June 18, 2025): 147–63. https://doi.org/10.52825/glass-europe.v3i.2657.

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The Islamic era left a lasting legacy in the visual and material culture of the Iberian Peninsula. This phenomenon is particularly striking in a rare find of architectural fragments of an arcade with horseshoe-shaped arches in the convent of Santa Fe in Toledo (Spain). Different coloured glass-inlays (turquoise, purple, colourless) were embedded in the iconographic bas-relief made of plaster, an artistic technique that is unparalleled. This study explores the dynamics of glass supply and workshop practices in 11th-century Spain through the chemical analysis of 46 specimens of these glass inlay
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23

Intawin, Pratthana, and Wilaiwan Leenakul. "TRANSPARENT BARIUM TITANATE GLASS CERAMIC NANOCOMPOSITES FOR OPTOELECTRONIC DEVICE APPLICATIONS." Suranaree Journal of Science and Technology 32, no. 1 (2025): 030260(1–8). https://doi.org/10.55766/sujst9085.

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The glass crystallization process was applied to create a nanocomposite material composed of crystallites within a glass-like matrix. The structural optical and dielectric properties of crystals embedded in a glassy matrix, the BaTiO3-Na2O-B2O3-SiO2 system generated by the melt quenching process, were investigated in this study. The heat treatment procedure was used to convert the prepared glass to glass-ceramic samples at temperatures ranging from 700 to 800°C. After being quenched between stainless steel plates, the X-ray diffraction results reveal the presence of crystalline phase in a glas
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24

Roos, Christian, Jan-Hendrik Veltmaat, and Philipp Jacobs. "A New Model for Describing the Glass to Metal Interaction in Forming." Glass Europe 2 (November 14, 2024): 137–49. http://dx.doi.org/10.52825/glass-europe.v2i.976.

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The interaction between molten glass and metallic molds plays a crucial role in industrial glass-forming. Glass-metal sticking is usually described in terms of material- and process-dependent “sticking temperatures”; however, these parameters tell little about the underlying physical processes such as adhesion, wetting and spreading. We show that the molecular-kinetic spreading model, originally developed for liquids at room temperature, is also valid for a droplet of molten glass on different substrate materials: Measured contact angles and spreading velocities yield plausible values for the
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25

Modgil, Vivek, and V. S. Rangra. "Effect of Sn Addition on Thermal and Optical Properties of Pb9Se71Ge20-xSnx (8≤x≤12) Glass." Journal of Materials 2014 (March 27, 2014): 1–8. http://dx.doi.org/10.1155/2014/318262.

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Study of thermal and optical parameters of Pb9Se71Ge20-xSnx (8≤x≤12) glass has been undertaken. Crystallization and glass transition kinetics has been investigated under nonisothermal conditions by DSC technique. Phase separation has been observed in the material and is investigated by taking the XRD of annealed bulk samples. The material possesses good glass forming ability, high value of glass transition temperature about 420 K, and glass stability. Optical band gap and other optical constants such as refractive index and extinction coefficient have been determined. The isoelectronic substit
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26

Wang, Yi Ming, Li Jing Zheng, and Shu Jie Pang. "Formation and Mechanical Properties of Mg-Cu-Al-Gd Bulk Metallic Glass Composites." Materials Science Forum 650 (May 2010): 290–94. http://dx.doi.org/10.4028/www.scientific.net/msf.650.290.

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The effect of Al addition to Mg65Cu25Gd10 glassy alloy on the microstructure, thermal properties and mechanical properties were investigated. The Mg65Cu25-xAlxGd10 (x=1-7at. %) bulk metallic glass composites were formed by copper mold casting, and the fraction and size of the crystalline phases in the glassy matrix changed with the Al content. The Mg65Cu24Al1Gd10 glass composite consisted of a small amount of crystalline phases in the glassy matrix possesses high compressive strength up to about 850 MPa.
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27

SURYANARAYANA, C., and SATYAJEET SHARMA. "GLASS FORMATION IN MECHANICALLY ALLOYED Fe-BASED SYSTEMS." Functional Materials Letters 02, no. 04 (2009): 147–55. http://dx.doi.org/10.1142/s1793604709000727.

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Rapid solidification processing of metallic melts has been traditionally employed to synthesize metallic glasses in several alloy systems. However, in recent years, solid-state processing methods, and more specifically, mechanical alloying, have become popular methods to synthesize glassy phases in metallic alloy systems. Although a large number of criteria have been developed to identify alloy compositions that can be solidified into the glassy state, very few attempts have been made to predict the glass-forming ability by solid-state processing methods. To evaluate if some clear criteria cou
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28

Contreras Jaimes, Altair T., Gloria Kirste, Christian Patzig, et al. "Phosphate/Silicate Ratio Allows for Fine-Tuning of Bioactive Glass Crystallisation and Glass-Ceramic Microstructure." Glass Europe 2 (June 3, 2024): 1–26. http://dx.doi.org/10.52825/glass-europe.v2i.1187.

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A combination of XRD, solid-state NMR and state-of-the-art imaging techniques were used to investigate how the calcium orthophosphate/calcium silicate ratio affects the crystallisation of bioactive glasses in the system SiO2-P2O5-CaO-CaF2. In the phosphate-free glass, xonotlite, wollastonite and cuspidine crystallised. From 2.4 mol% P2O5, fluorapatite also formed, while the amount of wollastonite decreased. Crystallisation tendency was low for low phosphate contents, while above 3 mol% P2O5 it increased. The phosphate-free glass showed a volume crystallisation mechanism with constant activatio
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29

Cho, Jihyun, and Hwan Hee Kim. "The Role of Lead Glass Plate and Correlation Analysis of Raw Materials in Mireuksa Temple Site, Iksan." Journal of Conservation Science 38, no. 5 (2022): 482–95. http://dx.doi.org/10.12654/jcs.2022.38.5.10.

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We interpreted the role and meaning of nine lead glass plates excavated from the Mireuksa Temple site in Iksan and investigated their materials. Glass plates were excavated from all areas of the site, especially around Geumdangji and the eastern pagoda. The lead glass was presumed to have been partially installed in the symbolic space of the temple. Quantitative analysis of the lead glass (ICP system) determined that PbO comprised 74.2 to 79.5% wt. of the glass (average 76.6% wt.), which was higher than that reported for the glass in prior studies (approximately 70% wt.). Regarding the correla
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30

da Silva, Antônio Carlos, S. C. Santos, and Sonia Regina Homem de Mello-Castanho. "Transition Metals in Glass Formation." Materials Science Forum 727-728 (August 2012): 1496–501. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1496.

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The structure of silicate glasses gets its charge stability through SiO2, R2O3, R2+and R+groups arrangement. In these glassy structures, transition metals are usually used as dopants in small amounts. However, in soda-lime glass systems, transition metals can take part in the glassy network in larger quantities as secundary former or modifier, insted R2+groups, if the charge balance conditions are made favorable by R2O3groups additions. This paper studies transition metals (Cr, Ni, Fe, Cu, Zn, Pb, Ru) soda-lime-borosilicate glass network incorporation. This process was applied for many kinds o
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31

Kim, Jong Sun, Kyung Hwan Yoon, and Julia A. Kornfield. "Measurement of Stress-Optical Coefficients of COC’s with Different Composition." Key Engineering Materials 326-328 (December 2006): 183–86. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.183.

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Rheo-optical and mechanical properties of Cyclic Olefin Copolymers(COC’s) with different composition have been investigated across the glass transition temperature. Accurate measurement of stress or strain-optical coefficients and elastic modulus data across the glass transition are essential for predicting optical anisotropy in many optical products like pickup lenses and waveguides in LCD backlight unit since the material of these products have both flow and thermal history from the melt to glass. To obtain stress-optic behavior in the wide frequency region including rubbery, glassy and glas
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32

Mallamaci, Michael P., James Bentley та C. Barry Carter. "In situ crystallization of silicate glass films deposited on α-Al2O3". Proceedings, annual meeting, Electron Microscopy Society of America 51 (1 серпня 1993): 928–29. http://dx.doi.org/10.1017/s0424820100150472.

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Polycrystalline alumina compacts often contain amorphous films at grain boundaries and triple junctions as a result of the liquid-phase sintering process. An anorthite-based composition (CaAl2Si2O8) is typical of the glassy phases observed in these materials. With appropriate heat treatments the glass phase can be crystallized, which can influence the properties of the bulk material. Deposition of a thin film of glass on single-crystal α-Al2O3 is being used to study the influence of specific crystallographic orientations on the alumina-glass interface properties. Vapor-phase growth of glass on
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33

Gültekin, ERDAL. "Art in Glass, in Artistic delicacy Blowing Technique and Anatolian Civilization." INTERNATIONAL JOURNAL OF HUMANITIES AND ART RESEARCH 8, E.Ş. Special Issue (2023): 27–38. https://doi.org/10.5281/zenodo.8256919.

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Although Glass has been used for 5000 years, it has never lost value. It seems that Glass will not lose value in the future. Although new modified raw materials are being discovered with today's technology, Glass, As it is today, will have the most trusted, used hygiene and features that can make its buyers happy tomorrow. Glass, used in many technologies such as packaging, insulation, and production, especially in heavy industry, has never lost its value. However, new technological materials that we can call intermediate or modified are produced. Glass is the only unrivaled product that w
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34

Hammond, Andrew P., and Eric I. Corwin. "Experimental observation of the marginal glass phase in a colloidal glass." Proceedings of the National Academy of Sciences 117, no. 11 (2020): 5714–18. http://dx.doi.org/10.1073/pnas.1917283117.

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The replica theory of glasses predicts that in the infinite dimensional mean field limit, there exist two distinct glassy phases of matter: stable glass and marginal glass. We have developed a technique to experimentally probe these phases of matter using a colloidal glass. We avoid the difficulties inherent in measuring the long time behavior of glasses by instead focusing on the very short time dynamics of the ballistic to caged transition. We track a single tracer particle within a slowly densifying glass and measure the resulting mean squared displacement (MSD). By analyzing the MSD, we fi
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35

Cruz, Rui, João Alexandre da Cruz Ranita, José Macaira, et al. "Glass–Glass Laser-Assisted Glass Frit Bonding." IEEE Transactions on Components, Packaging and Manufacturing Technology 2, no. 12 (2012): 1949–56. http://dx.doi.org/10.1109/tcpmt.2012.2212195.

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36

Reis, Ana Karoline dos, Francisco Maciel Monticelli, Roberta Motta Neves, Luis Felipe de Paula Santos, Edson Cocchieri Botelho, and Heitor Luiz Ornaghi Jr. "Creep behavior of polyetherimide semipreg and epoxy prepreg composites: Structure vs. property relationship." Journal of Composite Materials 54, no. 27 (2020): 4121–31. http://dx.doi.org/10.1177/0021998320927774.

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In the present study, the creep behavior of polyetherimide semipreg and epoxy prepreg composites was studied using dynamic mechanical analyzer and focused on structure vs. property relationships in glassy, glass transition, and elastomeric regions. The main contribution to the field is to study pre-impregnated materials concerning creep behavior, mainly based on different analytical models, and microstructure. Two different reinforcements were used (carbon fiber and glass fiber) for each matrix. Findley, Burger, and Weibull analytical models were applied with an excellent fit for the most of t
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37

Jabed, Akib, M. Nabil Bhuiyan, Waseem Haider, and Ishraq Shabib. "Distinctive Features and Fabrication Routes of Metallic-Glass Systems Designed for Different Engineering Applications: A Review." Coatings 13, no. 10 (2023): 1689. http://dx.doi.org/10.3390/coatings13101689.

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Materials with a disordered atomic structure, often termed glassy materials, are the focus of extensive research due to the possibility of achieving remarkable mechanical, electrochemical, and magnetic properties compared to crystalline materials. The glassy materials are observed to have an improved elastic modulus combined with a higher strength and hardness. Moreover, better corrosion resistance in different mediums is also observed for glassy solids, which is difficult to attain using conventional crystalline materials. As a result, the potential applications of metallic-glass systems are
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38

Kasuga, Toshihiro, Miwako Terada, Masayuki Nogami, and Mitsuo Niinomi. "Machinable calcium pyrophosphate glass-ceramics." Journal of Materials Research 16, no. 3 (2001): 876–80. http://dx.doi.org/10.1557/jmr.2001.0107.

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Glass-ceramics containing a large amount of calcium pyrophosphate (β–Ca2P2O7) crystal were prepared via crystallization and sintering; compacts of a calcium phosphate glass powders with a composition of 60CaO · 30P2O5 · 5TiO2 · 5Na2O (in mol%) were heated for 3–6 h at 850 °C in air. The compacts were densified by the viscous flow of the glassy phases during heating. The calcium phosphate glass-ceramics were found to show a bending strength of approximately 100 MPa, and they were easy to machine, as confirmed by a drilling test using a conventional carbide tool. The machinability is thought to
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39

Wada, Takeshi, Fengxiang Qin, Xinmin Wang, et al. "Formation and bioactivation of Zr-Al-Co bulk metallic glasses." Journal of Materials Research 24, no. 9 (2009): 2941–48. http://dx.doi.org/10.1557/jmr.2009.0348.

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A Cu- and Ni-free Zr-based metallic glass with high glass-forming ability was found in the Zr-Al-Co ternary system. The eutectic Zr56Al16Co28 alloy could be cast into glassy cylindrical rods with diameters up to 18 mm. The glassy alloy exhibited high tensile fracture strength of 1830 MPa and low Young's modulus of 83 GPa in conjunction with better corrosion resistance compared with the glassy Zr57Nb5Al10Ni12.6Cu15.4 in a simulated body fluid. Hydrothermal-electrochemical treatment in the aqueous 5M-NaOH solution resulted in the formation of amorphous sodium cobaltate layer on the surface of gl
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40

Men, H., S. J. Pang, and T. Zhang. "Effect of Er doping on glass-forming ability of Co50Cr15Mo14C15B6 alloy." Journal of Materials Research 21, no. 4 (2006): 958–61. http://dx.doi.org/10.1557/jmr.2006.0109.

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Bulk glass formation of the Co–Cr–Mo–C–B–Er alloy system was investigated in this paper. The Co50Cr15Mo14C15B6 (at.%) alloy could be cast into fully glassy rod with a diameter up to 2 mm. By adding 2 at.% Er to this alloy, the critical diameter for glass formation reached 10 mm. The excellent glass formability of the Er-doped alloy was mainly attributed to its relatively large reduced glass transition temperature of 0.61, near-eutectic composition, and the necessity of redistribution of the Er atoms for precipitation of crystalline Co6Mo6C phase in the undercooled liquid on cooling.
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41

Wang, Shunbo, and Yu S. Tver’yanovich. "Relationship of Temperature Dependences of Microhardness and Enthalpy of Glass on the Example of Selenium." Физика и химия стекла 49, no. 4 (2023): 395–400. http://dx.doi.org/10.31857/s0132665123600012.

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A model is proposed that makes it possible to calculate the temperature dependence of the microhardness of glass over the entire temperature range from the softening temperature to absolute zero. The calculation uses the temperature dependence of the glass enthalpy and the value of its microhardness at the glass transition temperature. The proposed model is tested on the example of glassy selenium. For this, the temperature dependence of the microhardness of selenium on the softening temperature up to 100 K, which is 50 K below its Debye temperature, is measured. Thus, a relationship is establ
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42

Yue, Li Jie, Jin Sheng Han, and Kun Xie. "The Microalloying Effects in Cu-Based Bulk Metallic Glasses." Materials Science Forum 688 (June 2011): 407–12. http://dx.doi.org/10.4028/www.scientific.net/msf.688.407.

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The glassy alloy rods of Cu50Zr43Al7, (Cu50Zr43Al7)100-xYx(x=2,5) and (Cu50Zr43Al7)100-xAgx(x=6,7) with diameters of 3.0 mm were prepared by copper mold suction casting method. The influence of adding Ag and Y to Cu50Zr43Al7 metallic glass on glass formation ability (GFA) and thermal stability was studied by means of X-ray diffraction analysis (XRD) and differential scanning calorimetry (DSC). The results show that Ag and Y appropriate micro-addition enhance the glass formation ability and thermal stability of the Cu-Zr-Al metallic glass. The effect of Ag is better than that of Y. The addition
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43

Antonio, Raine, John Bussey, Malin C. J. Dixon Wilkins, Daniel Neuville, Laurent Cormier, and John McCloy. "Effects of Al Substitution for Fe in Na₅FeSi₄O₁₂ (5.1.8) Glasses: Structure and Crystallization." Glass Europe 2 (November 15, 2024): 151–64. http://dx.doi.org/10.52825/glass-europe.v2i.2341.

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In this study, the effects of substituting Al for Fe in 5Na2O∙(Al2O3)x∙(Fe2O3)1-x∙8SiO2 glass, x=0 to 1, and Na5AlxFe1-xSi4O12 (5.1.8) crystal, were investigated using thermal analysis, Fe K-edge X-ray absorption, X-ray diffraction, Raman spectroscopy, and Electron Probe Microanalysis. In both glass and crystallized glass, nearly all the Fe was tetrahedrally coordinated Fe3+, as expected from the high concentration of Na2O. The substitution of Al for Fe in the glasses caused the glass transition temperature to increase as polymerization increased, as evidenced by Raman, likely due to both fiel
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44

Lin, Chung Kwei, and Pee Yew Lee. "Consolidation of Mechanically Alloyed Cu-Zr-Ti Metallic Glass Powders." Key Engineering Materials 732 (March 2017): 5–10. http://dx.doi.org/10.4028/www.scientific.net/kem.732.5.

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In the present study, Cu60Zr30Ti10 metallic glass powders were prepared by mechanical alloying of pure Cu, Zr, and Ti powder mixtures. Cu60Zr30Ti10 metallic glass composite powders were obtained after 5 h of milling as confirmed by X-ray diffraction and transmission electron microscopy. The metallic glass powders were found to exhibit a supercooled liquid region before crystallization. Cu60Zr30Ti10 bulk metallic glass were synthesized by vacuum hot pressing the as-milled Cu60Zr30Ti10 metallic glass powders at 723 K in the pressure range of 0.72 ~ 1.20 GPa. Cu60Zr30Ti10 BMG with nanocrystalline
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45

Jin, H. J., and K. Lu. "An indirect approach to measure glass transition temperature in metallic glasses." International Journal of Materials Research 97, no. 4 (2006): 388–94. http://dx.doi.org/10.1515/ijmr-2006-0065.

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Abstract Glass transition behavior of metallic glasses under some extraordinary conditions (such as under high pressures) remains unexplored. Conventional measurements of glass transition temperature, T g, are very difficult to perform under these extraordinary circumstances. In the present paper, we introduce an indirect approach to characterize glass transition, using enthalpy recovery experiments. With annealing deeply relaxed glassy samples and subsequent DSC measurements, a variation of enthalpy change upon heating with annealing temperature can be obtained. The variation of enthalpy chan
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46

Сандитов, Д. С., В. В. Мантатов та С. Ш. Сангадиев. "Oбобщенный кинетический критерий перехода жидкость--стекло". Физика твердого тела 62, № 10 (2020): 1706. http://dx.doi.org/10.21883/ftt.2020.10.49925.082.

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Using the model of delocalized atoms, a substantiation and generalization of the Schmelzer glass transition criterion is proposed. In contrast to the Bartenev and Volkenstein - Ptitsyn approaches, in the generalized kinetic glass transition criterion, along with the relaxation time and the cooling rate of the melt, the glass transition temperature and an almost universal dimensionless constant appear, which is determined by the fraction of the fluctuation volume frozen at the glass transition temperature. The idea is developed that the liquid goes into a glassy state when its cooling rate q re
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47

Thirumaran, S., and N. Karthikeyan. "Structural Elucidation of Some Borate Glass Specimen by Employing Ultrasonic and Spectroscopic Studies." Journal of Ceramics 2013 (April 21, 2013): 1–10. http://dx.doi.org/10.1155/2013/485317.

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Quantitative analysis has been carried out in order to obtain more information about the structure of two glass systems, namely, (B2O3-MnO2-PbO) (BML glass system) and (B2O3-Na2CO3-P2O5) (BSP glass system). Their structural elucidation has been carried out by studying the ultrasonic velocities (longitudinal velocities and shear velocities ) and density of these glass samples. The present investigation has been interpreted by focusing more on elastic and mechanical properties of glass specimen through ultrasonic study and the elemental analysis study through spectroscopic studies. The scanning
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48

Hu, Hanyu, Sami Soudani, Jonathan Hamon, Nicolas Trcera, Michael Paris, and Yann Morizet. "Multi-Spectroscopic Investigations for Comprehensive Structural Analysis of Aluminoborosilicate Glasses: II. Relation Between the Glass Structure and Chemical Properties." Glass Europe 2 (December 20, 2024): 213–31. https://doi.org/10.52825/glass-europe.v2i.1424.

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Investigating how the chemical composition of glass influences its network structure is a crucial aspect in glass research. In this study, we have used the concept of glass optical basicity (Λglass), calculated from the chemical composition, to explore the relationship between the oxygen chemical environment and various structural parameters within complex network of Na- or/and Ca-bearing aluminoborosilicate glasses. We also incorporated extensive structural data from different glass systems reported in the literature. Our findings demonstrate a strong correlation between optical basicity and
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49

Li, Jianwei. "Thermomechanical constitutive equations for glass and numerical simulation on automobile glass forming technology." Glass Technology: European Journal of Glass Science and Technology Part A 63, no. 4 (2022): 122–28. http://dx.doi.org/10.13036/17533546.63.4.006.

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To establish a comprehensive numerical model for automotive glass forming, firstly, this paper conducts material tests of 3·2 SG glass to obtain detailed material properties. Through thermal expansion experiments, the thermal expansion coefficients including glassy and liquid states are obtained; then by using three-point bending stress relaxation and differential scanning calorimetry experiments, the stress relaxation and structural relaxation properties of the glass are obtained. Finally, a comparison analysis of the simulation and the actual spherical deviation for an actual automobile glas
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50

Liu, Hao, Xi Tang Wang, Zhou Fu Wang, and Bao Guo Zhang. "Effects of Al2O3 on the Structure and Properties of Calcium-Magnesium-Silicate Glass Fiber." Advanced Materials Research 450-451 (January 2012): 42–45. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.42.

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Calcium-magnesium-silicate glass fiber is a kind of candidate materials for aluminosilicate ceramic fiber in high temperature resistant field. However, the large thermal shrinkage limits its rapid development and industrial application in high temperature insulation field. It has been known that the shrinkage under high temperatures is mainly affected by the structure and crystallization mechanisms of glass fibers. Thus, Al2O3 was chosen as additive in the chemical composition of glass fiber to investigate the glassy network structure, crystallization and dissolution properties of calcium-magn
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