Research progress of binders for polycrystalline cubic boron nitride (PCBN) and preparation technology
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摘要: 聚晶立方氮化硼(PCBN)具有高硬度和好的耐磨性、导热性、高温稳定性及化学稳定性,在加工淬硬钢、灰铸铁、钛合金以及高温合金等难加工材料领域有广泛的应用。本文综述了PCBN用结合剂研究及应用概况,分别介绍了PCBN用金属/陶瓷单相型、金属和陶瓷复合型和新型金属陶瓷Ti3SiC2类化合物3种类型结合剂的结合机理及优缺点,其中重点介绍Ti3SiC2类新型结合剂的制备工艺和独特性能,并对其在制备过程中存在的问题进行阐述。Abstract: Polycrystalline cubic boron nitride (PCBN) is widely used in cutting hardened steel, gray cast iron, titanium alloy and superalloy because of its high hardness and other good properties such as wear resistance, thermal conductivity, high temperature stability and chemical stability. In this paper, the research and application of binders for PCBN are summarized. The bonding mechanism, advantages and disadvantages of three types of binders, namely metal/ceramic single-phase binder, metal-ceramic composite binder and new Ti3SiC2binder with its analogues, are introduced respectively. The preparation process and unique properties of Ti3SiC2binder and its analogues are emphatically introduced, the problems in whose preparation are also discussed.
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Key words:
- polycrystalline cubic boron nitride (PCBN) /
- binder /
- MAX phase
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