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李鹏飞,范景莲,章曼,冯康杰,韩勇,田家敏.烧结温度对W-40vol.%ZrC性能与组织的影响[J].稀有金属材料与工程(英文),2019,48(1):335~340.[lipengfei,fan jinglian,zhangman,fengkangjie,hanyong and tianjiamin.Effect of sintering temperature on microstructure and properties of W-40vol%ZrC[J].Rare Metal Materials and Engineering,2019,48(1):335~340.]
Effect of sintering temperature on microstructure and properties of W-40vol%ZrC
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Received:December 15, 2017  Revised:January 07, 2018
DOI:
Key words: SPS  hardness  grain sizes  relative density  bending strength
Foundation item:国家自然科学基金资助(项目号51474242和51404308) 和国家科技部重大专项(项目号2014GB115000)
Author NameAffiliation
lipengfei,fan jinglian,zhangman,fengkangjie,hanyong and tianjiamin  
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Abstract:
      W-40vol%ZrC composites was prepared by spark plasma sintering (SPS) and ordinary consolidation sintering respectively. The relative density, mechanical properties and microstructure were studied. The resules show that high relative density, high strength and fine grains structure can be achieved by SPS which is reduced 200℃ to the ordinary consolidation sintering. The relative density, hardness, bending strength of W-40vol%ZrC composites sintering at 1600℃ was 98.56%, HRA78.1 and 501MPa respectively. The average grain sizes of W and ZrC was 3μm and 1.5μm. O-W40ZrC had the optimun value sintering at 1860℃, the relative of density, hardness and bending strength was 98.95%, HRA77.3 and 726MPa. The average grain sizes of W and ZrC was 10μm and 4.5μm. Compared with ordinary consolidation sintering, the tungsten grain is more fine and ZrC particles is much more well-distributed prepared by spark plasma sintering, and the fine grains has a beneficical effect on fracture process.