Abstract

High-density ZrN/ZrSi₂composites for use in decoration and as abrasives were synthesized by dynamic-compaction combustion synthesis from Zr–Si₃N₄–Co powder blends. The effect of Zr mean particle size \(\bar {d}\), compression load P, and Co addition on composite properties was investigated. In the absence of Co, the ZrN/ZrSi₂ composite prepared from Zr with \(\bar {d}\) = 14.23 µm at P = 234 MPa showed a porosity of 2.3 vol % and a Vickers hardness of 1115 HV. In addition to enhanced composite hardness, 10% Co additive was also found to result in formation (at P = 327 MPa) of shiny luster particles with a maximum hardness of 1244 HV and a porosity of below 1.0 vol %.

中文翻译：

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加压燃烧合成ZrN / ZrSi 2 / Co金属陶瓷：Co添加的影响

摘要

通过动态压缩燃烧合成法从Zr-Si ₃ N ₄ -Co粉末混合物中合成了用于装饰和用作磨料的高密度ZrN / ZrSi ₂复合材料。研究了Zr平均粒径\（\ bar {d} \），压缩载荷P和Co添加对复合材料性能的影响。在不存在Co的情况下，由Zr制成的ZrN / ZrSi ₂复合材料在（P＝234MPa）下具有（（bar {d}}）＝14.23μm，显示出2.3vol ％的孔隙率和1115HV的维氏硬度。除了提高复合材料的硬度外，还发现10％的Co添加剂会导致形成（在P = 327 MPa）的光泽光泽颗粒，其最大硬度为1244 HV，孔隙率低于1.0 vol％。