Developments of Composite and Bondiing Materials Prepared by High Pressure Process

重点研究高压对复合材料的影响，开发出具有微观和宏观特征的新型复合材料。本文所研究的复合材料是在高压下制备的含有无定形氢氧化物的复合材料，在高压下将水掺杂到结构中形成微观复合材料。当高压稳定的金刚石或立方氮化硼颗粒分散在基体中时，可以制备宏观复合材料。微复合材料为Sr-Cu-O和La-Sr-Cu-O化合物。这些化合物表现出高压相变，只有氧掺杂的高压相表现出超导性。我们研究了氧的压力、温度和组成关系以及氧的掺杂效应来实现超导态。对金刚石和cBN分散烧结复合材料进行宏观复合研究。采用淬硬工具钢对刀具性能进行了评价。研制了新型TiC分散金刚石复合材料。

This study was carried out to develop new composite materials which show characteristic properties in both microscopic and macroscopic levels focusing on the high pressure effect to the materials. The composites in this study is defined more broader sense containing amorphous hydroxide compounds prepared at high pressure which forming a microscopic composite by doping water into the structure at high pressure. When high pressure stable diamond or cubic BN particles were dispersed in the matrix, we can prepare macro-composite.Micro-composite studied were Sr-Cu-O and La-Sr-Cu-O compounds. These compounds showed high pressure phase transformation and only oxygen doped high pressure phases showed superconductivity. We studied pressure, temperature and composition relationship and doping effect of oxygen to realize superconducting state.Diamond and cBN dispersed sintered composite were studied as macro-composite. Evaluation as cutting tool performance was carried out using hardened tool steel work. New TiC dispersed diamond composite was developed.