无机材料学报

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燃烧合成TiC-Al2O3/Fe梯度材料及其抗热震行为

张卫方1; 陶春虎1; 习年生1; 韩杰才2; 杜善义2   

  1. 1. 北京航空材料研究院, 北京 100095; 2. 哈尔滨工业大学复合材料研究所, 哈尔滨 150001
  • 收稿日期:2000-05-08 修回日期:2000-07-06 出版日期:2001-05-20 网络出版日期:2001-05-20

Combustion Synthesis TiC-Al2O3/Fe FGM and its Resisting Thermal Shock Behaviors

ZHANG Wei-Fang1; TAO Chun-Hu1; XI Nian-Sheng1; HAN Jie-Cai2; Du Shan-Yi 2   

  1. 1. Beijing Institute of Aeronautical Materials; Beijing 100095 China; 2. Center for Composite Materials of Harbin Institute of technology; Harbin 150001 China
  • Received:2000-05-08 Revised:2000-07-06 Published:2001-05-20 Online:2001-05-20

摘要: 采用自蔓延高温合成结合准热等静压(SHS/PHIP)制备出了具有对称结构的 TiC-Al/Fe梯度材料,并对其抗热冲击及抗热疲劳行为进行了测试和分析·结果表明, SHS/PHIP制备的 TiC-Al/Fe梯度材料具有预期的梯度式组成,在热冲击和热疲劳实验过程中均无梯度层间横向贯穿裂缝,克服了传统陶瓷/金属直接接合界面的热应力剥落.

关键词: SHS/PHIP, 梯度功能材料, 微观组织, 抗热震行为

Abstract: The microstructure and composition distribution of TiC-Al2O3/Fe functionally graded materials(FGM) prepared by SHS/PHIP were studied, and the resisting thermal
shock behavior was analyzed. The results show that TiC-Al2O3/Fe FGM has the desired composition distribution. The thermal shock fracture of TiC-Al2O3/Fe
FGM originated from the surface on the side of ceramic and propagated perpendicular to the graded layer. And the crack of thermal fatigue originated and propagated in
graded layer. However, no cross-section crevice through the graded layer was found in the two conditions.

Key words: SHS/PHIP, FGM, microstructure, resisting thermal shock behavior

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