首页> 外国专利> ZrC TiC-ZrC-Ni Method of manufacturing TiC-ZrC-Ni cermet with suppressed particle growth by ZrC addition

ZrC TiC-ZrC-Ni Method of manufacturing TiC-ZrC-Ni cermet with suppressed particle growth by ZrC addition

机译:ZrC TiC-ZrC-Ni通过添加ZrC来抑制颗粒生长的TiC-ZrC-Ni金属陶瓷的制造方法

摘要

The method for producing a TiC-ZrC-Ni cermet in which grain growth is suppressed by addition of ZrC according to the present invention is characterized in that (a) TiO 2 powder, ZrO 2 powder and carbon material are first milled to prepare a mixed powder (TiO 2 -ZrO 2- C); (b) heat-treating the mixed powder to produce a composite powder (TiC-ZrC); And (c) secondarily milling the composite powder (TiC-ZrC) and the Ni powder to prepare a mixture. According to the present invention, a high-energy milling process can form a TiC-ZrC type composite powder, instead of forming a powder of (Ti, Zr) C type in which Zr and Ti are solidified in carbide, To produce a TiC-ZrC-Ni cermet. In addition, TiC-ZrC-Ni cermets with excellent mechanical properties can be produced by suppressing the growth of TiC particles by ZrC particles during sintering, and the composite powder (TiC-ZrC) The particle size of the powder is as small as several hundred nanometers and the sintering temperature can be lowered, and the sintering time can also be shortened.
机译:根据本发明的制备通过添加ZrC而抑制晶粒生长的TiC-ZrC-Ni金属陶瓷的方法,其特征在于:(a)TiO 2 粉末,ZrO 2 <首先将/ Sub>粉末和碳材料研磨以制备混合粉末(TiO 2 -ZrO 2- C); (b)对混合粉末进行热处理以制备复合粉末(TiC-ZrC);并且(c)第二次研磨复合粉末(TiC-ZrC)和Ni粉末以制备混合物。根据本发明,高能研磨工艺可以形成TiC-ZrC型复合粉末,而不是形成其中Zr和Ti在碳化物中固化的(Ti,Zr)C型粉末,从而生产TiC- ZrC-Ni金属陶瓷。此外,通过抑制烧结时ZrC颗粒引起的TiC颗粒的生长,可以制得机械性能优异的TiC-ZrC-Ni金属陶瓷,复合粉末(TiC-ZrC)的粒径小至几百个。纳米和烧结温度可以降低,烧结时间也可以缩短。

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