Thermal Shock Resistance of Fe3Al(p)/Al2O3 Composite

Journal of Inorganic Materials

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Thermal Shock Resistance of Fe₃Al(p)/Al₂O₃ Composite

LI Jia^1,2; YIN Yan-Sheng²; GONG Hong-Yu²; SHI Rui-Xia²; ZHOU Chun-Hua²

1. Department of Material Science and Engineering; Jinan University; Jinan 250022; China;2. Key Lab for Liquid Structure and Heredity of Ministry of Education; Engineering Ceramics Key Lab of Shandong Province; Shandong University; Jinan 250061; China

Received:2004-02-16 Revised:2004-03-09 Published:2005-03-20 Online:2005-03-20

Abstract

Abstract: Fe₃Al(p)l/Al₂O₃ composites were prepared by hot-press sintering. The thermal shock resistance of the composite was predicted by analyzing the relation between the R-curve and thermal stress intensity factor curve. The results show that the predicting values consist well with the experimentally measured values obtained by the quench- strength method. The thermal shock resistance of the composite is improved by adding Fe3Al particles, the △T_c increasing from 200℃(Al₂0₃) to 400℃(composite). The higher fracture toughness, higher thermal conductivity and lower Young's module and f(β) are the main reasons for the improvement of thermal shock resistance.

Key words: thermal shock resistance, composite, R-curve

CLC Number:

TQ174

LI Jia,YIN Yan-Sheng,GONG Hong-Yu,SHI Rui-Xia,ZHOU Chun-Hua. Thermal Shock Resistance of Fe₃Al(p)/Al₂O₃ Composite[J]. Journal of Inorganic Materials.

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Thermal Shock Resistance of Fe₃Al(p)/Al₂O₃ Composite

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