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Thermal Expansion Behaviour of High Melting Point Oxides

机译:高熔点氧化物的热膨胀行为

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摘要

The thermal expansion characteristics of the reinforcement and matrix constituents in ceramic composites have a strong influence on a number of aspects of the composite performance. Thus the toughness and strength of the composite can be influenced by local residual stresses due to the thermal expansion mismatch of different phases. Moreover, in individual polycrystalline phases, local stress variations from grain to grain, generated as a result of anisotropy of thermal expansion in combination with anisotropy of elasticity can influence strength and toughness in similar ways. In the present study, reported data on the thermal expansion coefficients of oxides having potential as constituents in high temperature composites are reviewed and complemented with additional measurements made using high temperature X-ray diffraction.
机译:陶瓷复合材料中增强材料和基体成分的热膨胀特性对复合材料性能的许多方面都有很大影响。因此,由于不同相的热膨胀失配,复合材料的韧性和强度会受到局部残​​余应力的影响。而且,在各个多晶相中,由于热膨胀的各向异性与弹性的各向异性相结合而产生的晶粒之间的局部应力变化会以类似的方式影响强度和韧性。在本研究中,对有关高温复合材料中具有潜在组成成分的氧化物的热膨胀系数的报告数据进行了审查,并补充了使用高温X射线衍射进行的其他测量。

著录项

  • 来源
  • 会议地点 Osaka(JP);Osaka(JP);Osaka(JP);Osaka(JP)
  • 作者单位

    Division of Engineering Materials, Lulea University of Technology, SE-97187 Lulea, Sweden;

    Division of Engineering Materials, Lulea University of Technology, SE-97187 Lulea, Sweden;

    Department of Inorganic Chemistry, Stockholm University, SE-10691 Stockholm, Sweden;

    Department of Inorganic Chemistry, Stockholm University, SE-10691 Stockholm, Sweden;

    Division of Engineering Materials, Lulea University of Technology, SE-97187 Lulea, Sweden;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TQ174.58;
  • 关键词

    elastic constants; oxides; residual stress; thermal expansion;

    机译:弹性常数氧化物残余应力热膨胀;

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