合成PCD和PCBN复合片用金属屏蔽杯的选择

摘要

Some selection principles of metal cups used to fabricate poly-crystal diamond (PCD) and poly-crystal cubic boron nitride (PCBN) compacts have been summarized according to the actual production. The selection principle are as follow, 1)higher melting point;2) higher plasticity, transformation equality and no breaking at high pressure;3) there is the purification function on cavity body; 4) simple technology. The effects of some common metal cup materials and some assembly modes on the ultra-high pressure-high temperature sintering process have been analyzed in detail in the present paper. Some assistances can be provided to the production of superhard materials.%结合聚晶金刚石(PCD)和聚晶立方氮化硼(PCBN)复合片的生产实际，总结 PCD和PCBN 复合片制备过程中使用的金属屏蔽杯材料的选择原则为：(1)具有较高熔点；(2)具备良好的塑性，高压下变形均匀且不发生开裂；(3)对合成腔体具有一定的净化功能；(4)制造方法简单。并详细分析了常用金属杯材料及其组装方式在超高压高温烧结过程中的作用。以期能为超硬材料生产提供有益的帮助与指导。