| 摘要 |
PURPOSE:To obtain a titled composite sintered body of high purity which is useful as a raw material for cemented carbide tools and high-temp. structural materials with less energy by igniting and burning a part of a molding contg. Zr powder, oxide powder and boron and progressing reaction by the generated heat. CONSTITUTION:The mixture obtd. by mixing (A) Zr metal powder, (B) oxide powder such as TiO2, and (C) boron powder is molded. A part of this molding is ignited to induce a combustion reaction and the reaction is progressed by the heat generated by this chemical reaction to obtain the composite sintered body consisting of ZrO2 and boride (e.g.: TiB2). |
