Modification and validation of the thermal shock parameter for ceramic matrix composites under water quenching condition

2009 ◽  
Vol 30 (10) ◽  
pp. 4552-4556 ◽  
Author(s):  
Xinghong Zhang ◽  
Zhi Wang ◽  
Changqing Hong ◽  
Ping Hu ◽  
Wenbo Han
Keyword(s):  
Thermal Shock ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Water Quenching ◽  
Matrix Composites ◽  
Quenching Condition ◽  
Shock Parameter

scholarly journals Thermal Shock Properties of ZrB2-SiCp-Graphite and ZrB2-SiCp-AlN Ceramic Matrix Composite Material

2011 ◽  
Vol 5 (1) ◽  
pp. 199-202 ◽  
Author(s):  
Baoliang Liu ◽  
Jianguo Wang ◽  
Guoqian Liu
Keyword(s):  
Thermal Shock ◽  
Fracture Property ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Potential Method ◽  
Water Quenching ◽  
Matrix Composites ◽  
Factors Affecting ◽  
Shock Stability

Thermal shock property of the material can be improved by improving fracture property of the material. In this paper, factors affecting fracture property have been studied and the effect of residual stress, microstructure, strain rate and stress concentration on fracture property of material has been analyzed, which may provide help for improving thermal shock property of material. Thermal shock stability for ZrB2-SiCp-Graphite(ZSG) and ZrB2-SiCp-AlN (ZSA) was investigated by water quenching test, which indicated that ZSC may provide more stable thermal shock properties. As shown by SEM of ZSA, surface cracks appeared after it was cooled from 1200°C due to thermal shock instability of the material. Residual flexural strength of ZSA was improved by crack healing after it was cooled from 1450°C. However, no surface crack appeared for ZSG after water quenching test. This paper may provided a potential method for improving thermal shock stability of zirconium diboride ceramic matrix composites by introducing proper quantities of graphite.

Thermal Shock Stability of Large Size ZrB2 Ceramic Matrix Composite Material

2010 ◽  
Vol 152-153 ◽  
pp. 805-808
Author(s):  
Bao Liang Liu ◽  
Long Hai Yan
Keyword(s):  
Thermal Shock ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Potential Method ◽  
Water Quenching ◽  
Matrix Composites ◽  
Surface Cracks ◽  
Large Size ◽  
Shock Stability

Thermal shock stability for ZrB2-SiCp-Graphite(ZSC) and ZrB2-SiCp-AlN (ZSA) was investigated by water quenching test. It indicated that ZSC may provide more stable thermal shock properties. As shown by SEM of ZSA, surface cracks appeared after it was cooled from 1200 , due to thermal shock instability of the material. Residual flexural strength of ZSA was improved by crack healing after it was cooled from 1450 . However, no surface crack appeared for ZSC after water quenching test. It provided a potential method for improving thermal shock stability of zirconium diboride ceramic matrix composites by introducing proper quantities of graphite.

scholarly journals Thermal-Shock behaviour of Short-Fibre Ceramic-Matrix Composites Made by the Freeze-Gelation Process

1993 ◽  
Vol 2 (2) ◽  
pp. 096369359300200 ◽  
Author(s):  
R S Russell-Floyd ◽  
R Johnson ◽  
R G Cooke ◽  
B Harris
Keyword(s):  
Mechanical Properties ◽  
Thermal Shock ◽  
Sol Gel ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Quenching Temperature ◽  
Sol Gel Process ◽  
Shock Behaviour ◽  
Thermal Shock Behaviour

This paper discusses the effect of thermal shock on the mechanical properties of some ceramic matrix composites manufactured by the sol-gel process. The composites were prepared by the freeze-gelation of aqueous sols of two different matrix compositions, each containing about 10vol% of Saffil alumina fibres. The properties of one composite remained almost unaffected by the thermal shock, while those of the second material remained unaffected up to about 300°C and then fell smoothly as the water-quenching temperature was further increased to 600°C.

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