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粗晶粒硬质合金具有结构缺陷少、硬度高、韧性好、红硬性高、适用范围广等特点。文章综述了粗晶粒WC-Co硬质合金分类、增韧机理及主要影响因素、粗晶粒WC粉、粗晶粒硬质合金的国内外研究进展、制备粗晶粒硬质合金的主要方法等。影响粗晶粒合金性能的主要因素有WC晶粒度、WC晶粒完整度、Co层厚度和碳含量。
Coarse grain cemented carbide with structural defects, high hardness, good toughness, red hardness, wide range of applications and so on. In this paper, the classification, toughening mechanism and main influencing factors of coarse grain WC-Co cemented carbide, the research progress of coarse grain WC powder and coarse grain cemented carbide, the main methods of preparing coarse grain cemented carbide Wait. The main factors affecting the properties of coarse grained alloys include WC grain size, WC grain integrity, Co layer thickness and carbon content.