论文部分内容阅读
以真空－气压烧结炉为主要手段，研究了ＷＣ—Ｃｏ硬质合金在真空烧结中的行为及气压烧结的作用。结果表明：ＹＧ８牌号的硬质合金的真空烧结起始于约９４０℃，终止于约１４２０℃，其真空烧结机理为相界反应控制的“溶解－淀析”过程。采用气压烧结工艺后，材料各方面性能均有明显改善。
The vacuum - pressure sintering furnace as the main means of WC-Co cemented carbide in vacuum sintering behavior and the role of pressure sintering. The results show that the vacuum sintering of YG8 grade cemented carbide begins at about 940 ℃ and ends at about 1420 ℃. The vacuum sintering mechanism of YG8 alloy is the dissolution - precipitation process controlled by phase boundary reaction. Adoption of pressure sintering process, the performance of all aspects of materials have significantly improved.