Properties of 316L/PSZ composites fabricated by means of extrusion forming and gas-pressure sintering

  • Zhang W
  • Xie J
  • Wang C
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To fabricate metal-ceramic multilayer hollow functionally gradient materials (FGMs) that might meet the requirement of repeated service and long working time of high temperature burners, such as spacecraft engine, the microstructure and properties of composites of stainless steel and partially stabilized zirconia were investigated. Samples of different proportions of stainless steel (316L) to partially yttria-stabilized zirconia (PSZ) were fabricated by powder extrusion and sintering method. Shrinkage, relative density, microstructure, micro-Vickers hardness, compression strength, bending strength, fractographic morphology, Young's modulus, coefficient of thermal expansion, thermal diffusivity and thermal conductivity and electric-resistivity of gas-pressure sintered samples with different proportions of stainless steel were measured. The results shows that threshold of ceramic matrix composites (CMCs) and metal matrix composites (MMCs) are approximately equal to 50 vol.% 316L and 60 vol.% 316L, respectively, and there is some difference between mechanical properties and physical properties in transient point. © 2004 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Composites
  • Functionally gradient materials
  • Properties
  • Stainless steel
  • Threshold
  • Zirconia

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  • Wenquan Zhang

  • Jianxin Xie

  • Congzeng Wang

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