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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

MSP试验法评价Mo/PSZ系复合材料的强度特性(Ⅱ)

江莞1; 白光照1; 王刚1; 李敬锋2   

  1. 1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,项目上海 200050; 2. 清华大学材料科学与工程系, 北京 100084
  • 收稿日期:2001-09-06 修回日期:2001-03-07 出版日期:2002-09-20 网络出版日期:2002-09-20

High Temperature Strength of Mo/PSZ Composites as Evaluated by MSP Test (Ⅱ)

JIANG Wan1; BAI Guang-Zhao1; WANG Gang1; LI Jing-Feng2   

  1. 1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Department of Materials and Engineering; Tsinghua University, Beijing 100084, China
  • Received:2001-09-06 Revised:2001-03-07 Published:2002-09-20 Online:2002-09-20

PDF (PC)

911

被引次数

21

摘要： 首先利用图像处理系统对Mo/PSZ系两相复合材料的微观组织进行了定量分析,然后在不同的实验温度下利用MSP试验法对该系复合材料的高温力学性能进行了测试,详细讨论了该系复合材料不同温度下的MSP强度与其组成,特别是与其对应的微观组织结构特征的关系.实验结果表明,不同温度下复合材料的MSP强度显示出不同的组织依存性,室温时呈W形状变化,在873K、1273K时分别在Mo分散组成和两相连续组成范围呈极大值,这种变化趋势依赖于复合材料所具有的微观组织结构.

关键词: 复合材料, 微观组织结构, MSP试验法, 高温强度

Abstract: In present work, the mechanical properties of Mo/PSZ (partially stabilized zirconia) composites were
investigated at a temperature range from room temperature to 1573K by means of the modified small punch test (MSP) and the dependence of MSP strength for Mo/PSZ
composites on composition and microstructure was discussed in detail. It was found that the change of MSP strength with the composition at various test
temperatures was different: it took the shape of “W” at room temperature; at temperatures up to 873K and 1273K, the MSP strength approached its peak,
respectively at the compositions where the Mo phase was dispersed or both compositional phases were continuous. The results show that MSP strength
depends not only on the composition but also on the composite microstructure.

Key words: composites, microstructure, MSP test, high temperature strength

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