Results 231 to 240 of about 23,553 (264)
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Journal of Physics D: Applied Physics, 2008
Thermal conductivity degradation of three semi-metallic ceramics: titanium carbide, zirconium carbide and titanium nitride, and a covalent compound: 6H silicon carbide, induced by irradiation with energetic heavy ions at room temperature, is studied and quantified.
L David +6 more
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Thermal conductivity degradation of three semi-metallic ceramics: titanium carbide, zirconium carbide and titanium nitride, and a covalent compound: 6H silicon carbide, induced by irradiation with energetic heavy ions at room temperature, is studied and quantified.
L David +6 more
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AIP Conference Proceedings, 2011
Ceramic matrix composite materials for thermal protection systems are required to maintain operational performance in extreme thermal and mechanical environments. In‐service inspection of materials capable of assessing the degree and extent of damage and degradation will be required to ensure the safety and readiness of future air vehicles.
Adam T. Cooney +4 more
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Ceramic matrix composite materials for thermal protection systems are required to maintain operational performance in extreme thermal and mechanical environments. In‐service inspection of materials capable of assessing the degree and extent of damage and degradation will be required to ensure the safety and readiness of future air vehicles.
Adam T. Cooney +4 more
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Composites and Functionally Graded Materials, 1997
Abstract A physically-based damage model has been developed to predict the nonlinear behavior of cross-ply ceramic matrix laminates due to progressive failures. It has been shown to model the nonlinear stress-strain response of chemical vapor infiltrated (CVI) SiC/SiC composites under tension loading accurately.
Chian-Fong Yen, Mark L. Jones
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Abstract A physically-based damage model has been developed to predict the nonlinear behavior of cross-ply ceramic matrix laminates due to progressive failures. It has been shown to model the nonlinear stress-strain response of chemical vapor infiltrated (CVI) SiC/SiC composites under tension loading accurately.
Chian-Fong Yen, Mark L. Jones
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The European Physical Journal Special Topics, 2008
The thermal conductivity degradation induced by irradiation with energetic heavy ions at room temperature is studied and quantified. Three semi-metallic systems: titanium and zirconium carbides, titanium nitride, as well as a covalent compound: 6H silicon carbide were irradiated by 25.8 MeV krypton ions at 1016 and 6 .
S. Gomès +6 more
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The thermal conductivity degradation induced by irradiation with energetic heavy ions at room temperature is studied and quantified. Three semi-metallic systems: titanium and zirconium carbides, titanium nitride, as well as a covalent compound: 6H silicon carbide were irradiated by 25.8 MeV krypton ions at 1016 and 6 .
S. Gomès +6 more
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Effect of TiN Addition on the Low Temperature Degradation of Ceramic Tool Materials 3Y-TZP
Key Engineering Materials, 2006Ceramic tool materials, 3Y-TZP added by TiN particles, were fabricated through hot-pressing techniques. The effects of TiN on their low-temperature degradation at 220# in air were investigated. It is shown that TiN can improve the stability of t-ZrO2 and inhibit the transformation from tetragonal to monoclinic phase, and that the content of TiN affects
Jing Sun, Chuan Zhen Huang, Jun Wang
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Journal of the American Ceramic Society, 2009
This paper deals with the specific interaction of the dispersant 3,6,9‐trioxadecanoic acid (TODA) with nano‐ZrO 2 surfaces. Special interest was directed towards degradation behavior of the adsorbates and its influence on dispersant capabilities of TODA regarding ...
Finke, T. +5 more
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This paper deals with the specific interaction of the dispersant 3,6,9‐trioxadecanoic acid (TODA) with nano‐ZrO 2 surfaces. Special interest was directed towards degradation behavior of the adsorbates and its influence on dispersant capabilities of TODA regarding ...
Finke, T. +5 more
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Journal of Materials Science & Technology, 2016
Zirconia-based bioceramics have been widely applied in the field of prosthodontics owing to its desirable mechanical performance, biocompatibility and aesthetics. However, the low-temperature degradation (LTD) of tetragonal zirconia (ZrO2) under intraoral condition can lead to the deterioration of mechanical properties of ZrO2 dental crowns, which ...
Huazhe Yang, Yang Ji
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Zirconia-based bioceramics have been widely applied in the field of prosthodontics owing to its desirable mechanical performance, biocompatibility and aesthetics. However, the low-temperature degradation (LTD) of tetragonal zirconia (ZrO2) under intraoral condition can lead to the deterioration of mechanical properties of ZrO2 dental crowns, which ...
Huazhe Yang, Yang Ji
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Materials Letters, 2018
Abstract Improving the mechanical properties and maintaining the desired degradability of the bioceramic scaffold is always being a contradiction in the field of bone tissue engineering. To resolve this conflict, highly degradable mesoporous bioactive glass (MBG) was homogenously coated on the mechanically stronger hardystonite (Ca2ZnSi2O7, HT ...
Dandan Ye +4 more
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Abstract Improving the mechanical properties and maintaining the desired degradability of the bioceramic scaffold is always being a contradiction in the field of bone tissue engineering. To resolve this conflict, highly degradable mesoporous bioactive glass (MBG) was homogenously coated on the mechanically stronger hardystonite (Ca2ZnSi2O7, HT ...
Dandan Ye +4 more
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The process of degradation of ceramic balls made of Si3N4-based materials in hybrid bearings
Conference PaperThe characteristic operating parameters for such equipment, like aviation GTEs, primarily include high speeds of the power shaft rotation and, consequently, high mechanical and thermal loads on the bearings. Ceramic materials, i.e., hybrid bearings, are proposed for the rolling elements in these bearing units.
Dmytro Kustovskyi +2 more
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Journal of Nuclear Materials, 2005
The thermal conductivity degradation due to low-temperature neutron irradiation is studied and quantified in terms of thermal resistance terms. Neutron irradiation is assumed to have no effect on umklapp scattering. A theoretical model is presented to quantify the relative phonon-scattering effectiveness of the three dominant defect types produced by ...
Snead, L. L. +2 more
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The thermal conductivity degradation due to low-temperature neutron irradiation is studied and quantified in terms of thermal resistance terms. Neutron irradiation is assumed to have no effect on umklapp scattering. A theoretical model is presented to quantify the relative phonon-scattering effectiveness of the three dominant defect types produced by ...
Snead, L. L. +2 more
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