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High temperature behaviour of tungsten carbide and boron carbide in nickel-based metal matrix composites.

机译:碳化钨和碳化硼在镍基金属基复合材料中的高温行为。

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摘要

Metal matrix composites (MMC) can be applied to steel substrates as wear coatings. MMC's consist of a reinforcing phase combined with a tough metal matrix. The behaviour of two nickel MMC's is investigated: Ni-WC and Ni-B 4C. Experiments were designed and carried out where WC or B4C were added to molten Ni. The melt was sampled following the addition of the ceramic. Analysis techniques included chemical analysis, optical microscopy, electron microprobe microanalysis and x-ray diffraction. In the Ni-WC system a portion of WC reacted, dissolving W in the nickel. Reactions in the Ni-B 4C system produced nickel-borides. A thermodynamic analysis of the systems was also completed. The Ni-WC thermodynamics supported the experimental results. The Ni-B4C thermodynamics was also in agreement with the experimental results in all but one case. The thermodynamic analysis also explored the use of Cr, Mn and Cu as matrix materials. This analysis suggested that Cu might be suitable in a Cu-Ni alloy.
机译:金属基复合材料(MMC)可以作为耐磨涂层应用于钢基材。 MMC由增强相和韧性金属基体组成。研究了两种镍MMC的行为:Ni-WC和Ni-B 4C。设计并执行了将WC或B4C添加到熔融Ni中的实验。在添加陶瓷之后对熔体进行采样。分析技术包括化学分析,光学显微镜,电子显微探针显微分析和X射线衍射。在Ni-WC系统中,一部分WC反应,将W溶解在镍中。 Ni-B 4C体系中的反应产生了硼化镍。还完成了系统的热力学分析。 Ni-WC的热力学支持了实验结果。除一种情况外,Ni-B4C的热力学也与实验结果一致。热力学分析还探索了使用Cr,Mn和Cu作为基质材料。该分析表明Cu可能适合于Cu-Ni合金。

著录项

  • 作者

    Sandy, Kimberley Anne.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Materials Science.
  • 学位 M.Sc.
  • 年度 2006
  • 页码 229 p.
  • 总页数 229
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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