无粘结相硬质合金的发展及展望<br />-中国材料进展

文章信息/Info

作者:: 刘超1; 2; （1.国家钨材料工程技术研究中心厦门钨业股份有限公司技术中心，福建厦门 361009）
(2.厦门金鹭特种合金有限公司，福建厦门 361006）

Author(s):: LIU Chao1; 2; （1.China National R&D Center for Tungsten, Xiamen Tungsten Co. Ltd.
Technology Center,Xiamen 361009, China)
（2.Xiamen Golden Egret Special Alloy Co. Ltd., Xiamen 361006, China）

摘要:: 无粘结相硬质合金与传统的WCCo硬质合金相比有着更高的硬度、弹性模量，同时耐腐蚀性和耐磨性也有着大幅的提高。由于没有金属粘结相的存在，无粘结相硬质合金的致密烧结十分困难。但是随着热等静压烧结（HIP）、放电等离子烧结（SPS）等先进烧结技术的发明及亚微、纳米粉末制造技术的进步，纯WC、WCTiCTaC、WCSiC、WCMoCSiC等多种无粘结相硬质合金不断涌现。这些材料被逐步运用在精密光学模具、喷砂嘴、核工业密封件等要求高精度、高硬度、高弹性模量、高耐腐蚀性的领域。主要对各种无粘结相硬质合金的性能及应用进行简单介绍，并对未来的发展方向做简单的展望。

Abstract:: Binderless carbide has higher hardness, higher Young’s modulus, while the corrosion resistance and wear resistance are improved greatly compared to conventional WCCo alloy. Because there is no metal binder phase in the carbide, binderless carbide is very difficult to sinter. But with the advanced sintering technology’s invention，such as hot isostatic pressing (HIP), spark plasma sintering (SPS), and the development of submicro, nano powder manufacturing technology, pure WC, WCTiCTaC, WCSiC, WCMoCSiC and other binderless carbides have emerged. These materials are gradually used in some fields requiring high precision, high hardness, high Young’s modulus and high corrosion resistance, such as precision optical mould, blast nozzle, nuclear industry seal，etc. In this paper, we introduced several binderless carbides and their applications, and has made a simple prospect for future development.