高压下金刚石烧结体系中的界面结合问题和新型多晶金刚石的研究

 进行了高压下金刚石掺质烧结机制有关的理论和实验研究。考虑到掺质和尺寸效应，得到了金刚石烧结体系中拉普拉斯第二定律的一个普适性方程和相应的界面结合特征方程。报导了高压下金刚石和掺质物行为的若干实验和分析结果。在此基础上获得具有特种界面结构的新型多晶金刚石。这种金刚石在拉丝模，特别在成品拉丝模的应用上显出其优越性。它的用途正在扩大。

INVESTIGATIONS ON THE PROBLEM OF INTERFACE BINDING IN THE SINTERING SYSTEM OF DIAMOND AT HIGH PRESSURE AND A NEW TYPE POLYCRYSTALLINE DIAMOND

Investigations were made on the theory and experiments relating to the sintering mechanism of diamond with dopant at high pressure. In consideration of the doping and dimension effects a universal equation of Laplace second law and the interface binding characteristic equation in the sintering system of diamond were obtained. Some results of the experiment and analysis on the behaviour of diamond and dopant at high pressure were reported. Based on those results, a new type polycrystalline diamond with a special interface structure was obtained. It shows its superiority in the application to the wiredrawing die, especially the end product wiredrawing die. The uses of the diamond are being extended.