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应用X射线衍射分析技术,对以Al+TiCO0.47+B系掺杂制备多晶立方氮化硼时各物相在高温高压烧结过程中发生的化学反应、物相变化和新生物相在烧结过程中的作用,以及CBN颗粒在烧结过程中的变化等进行了研究与探讨。结果表明,Al+TiC0.47+B和CBN经高压高温烧结后,在CBN颗粒间形成由AlN、AlB2、TiN、TiB2和TiC等难熔化合物组成的粘结相。其中的AlN相有效抑制了CBN的六方化。
The application of X-ray diffraction analysis to the chemical reaction, phase transformation and the role of new phase in the sintering process of high temperature and high pressure sintering of polycrystalline cubic boron nitride with Al + TiCO0.47 + B system , And CBN particles in the sintering process changes were studied and discussed. The results show that the binder phase composed of refractory compounds AlN, AlB2, TiN, TiB2 and TiC forms between the CBN particles after sintering at high pressure and high temperature for Al + TiC0.47 + B and CBN. The AlN phase effectively inhibits the hexagonal CBN.