scholarly journals Rapid Oxidation Characterization of Ultra-High Temperature Ceramics

2007 ◽  
Vol 90 (10) ◽  
pp. 3233-3238 ◽  
Author(s):  
Sigrun N. Karlsdottir ◽  
John W. Halloran
Keyword(s):  
High Temperature ◽  
Ultra High Temperature Ceramics ◽  
Ultra High Temperature

Processing and characterization of ZrB2–SiCW ultra-high temperature ceramics

2009 ◽  
Vol 472 (1-2) ◽  
pp. 358-362 ◽  
Author(s):  
Peng Zhang ◽  
Ping Hu ◽  
Xinghong Zhang ◽  
Jiecai Han ◽  
Songhe Meng
Keyword(s):  
High Temperature ◽  
Ultra High Temperature Ceramics ◽  
Ultra High Temperature

Preparation and characterization of ZrB2-SiC ultra-high temperature ceramics by microwave sintering

2010 ◽  
Vol 4 (3) ◽  
pp. 276-280 ◽  
Author(s):  
Hai-Long Wang ◽  
Chang-An Wang ◽  
De-Liang Chen ◽  
Hong-Ling Xu ◽  
Hong-Xia Lu ◽  
...  
Keyword(s):  
High Temperature ◽  
Microwave Sintering ◽  
Ultra High Temperature Ceramics ◽  
Ultra High Temperature

Effect of Sample Shape and Size on the Thermal Shock Resistance for Ultra-High Temperature Ceramics

2010 ◽  
Vol 177 ◽  
pp. 223-225
Author(s):  
Tao Zeng ◽  
Shi Yan ◽  
Yu Gu ◽  
Li Li Jiang ◽  
Dai Ning Fang ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Ultra High Temperature Ceramics ◽  
Sample Shape ◽  
Shock Resistance ◽  
High Temperature Condition ◽  
Shape And Size ◽  
Ultra High Temperature

The ceramic thermal shock resistance is usually determined by a strip or a disk sample. However, sample shape and size have greatly effect on determining the strength of Ultra-high temperature ceramics (UHTCs). Study on the thermal shock resistance of UHTCs with different shape and size is very important. Combining mechanics with oxidation dynamic theory, the present work studied the mechanical behavior of UHTCs under high temperature condition, which is different from the traditional thermal shock theory. The parameters, such as thermal expansion coefficient and Young's modulus, are considered as a function of temperature and incorporated into ANSYS code to calculate the stress field of UHTCs under high temperature condition. The effects of sample shape and size on UHTCs stress are discussed. It is found that the thermal shock resistance of UHTCs is strongly affected by the sample shape and size and this is useful for the characterization of UHTCs on mechanical properties.

Preparation and Characterization of Stable ZrB2-Based Ultra-High Temperature Ceramics Slurry by Aqueous Gelcasting

2008 ◽  
Vol 368-372 ◽  
pp. 1756-1757
Author(s):  
Hui Zhang ◽  
Yong Jie Yan ◽  
Zheng Ren Huang ◽  
Xue Jian Liu ◽  
Dong Liang Jiang
Keyword(s):  
High Temperature ◽  
Solid Content ◽  
Ammonium Citrate ◽  
Rheological Analysis ◽  
Ultra High Temperature Ceramics ◽  
Low Viscosity ◽  
Solids Loading ◽  
High Solids Loading ◽  
Ultra High Temperature

Stable ZrB2-based ultra-high temperature ceramic slurries were prepared and characterized with a solid content 40 vol% by aqueous gelcasting which was suitable to form high quality and complexshaped ceramic parts. In the present work, Ammonium Citrate Tribasic (ACT) was used as the dispersant. The properties of ZrB2 slurry, and the influencing factors were investigated by conventional techniques such as sedimentation tests, particle size distribution measurements, electrokinetic measurements and rheological analysis. High solids loading and low viscosity slurry was obtained by controlling the optimal conditions for the ZrB2-based ceramic powders.

Sign in / Sign up

Export Citation Format

Share Document