Effects of rare earth element lanthanum on the microstructure of copper matrix diamond tool materials

Effects of rare earth element La on the microstructure of Cumatrix diamond tools were researched under the conditions of variousmaterials components and the process parameters in order to improvematerials properties. SEM, XPS and X-ray were used to investigate thefracture section, microstructure and the element valence inmaterials. The Results shown that the combination of rare earthelement La and transition element Ti is advantageous to the bondingstate Between diamond particles and matrix, so it can improve thematerials properties. Suitable sintering temperature is 790 deg. C.

粉末冶金Cu基金刚石工具的研究现状及进展

以金刚石颗粒为磨料,与金属胎体混合,经烧结制取的金刚石工具,为加工玻璃、花岗岩、大理石等硬脆材料不可替代的新型工具。本文阐述了Cu基金刚石工具的研究现状,主要包括Cu基胎体的分类、预合金化技术、金刚石表面金属化技术、稀土元素在Cu基金刚石工具中的应用等。研发新的合金体系与新技术,提高Cu基金刚石工具的综合性能,是今后的研究方向。