摘要
文章综合论述了N68—N83系列纳米陶瓷结合剂性能特点、关键技术指标和陶瓷结合剂超硬工具的应用发展。指出陶瓷结合剂超硬工具具有组织结构可调、自锐性好、耐磨寿命长、不需要保护气氛空气中无压烧结以及可以大批量低成本生产等优点。纳米陶瓷结合剂解决了长期以来低熔高强的矛盾,烧结温度低至680℃,而结合剂抗折强度高于100MPa;根据不同工具的要求,可以在680℃～850℃温度范围烧结,气孔率在0～95%范围调节;适用于从60目～W0.5全粒度范围的金刚石和cBN工具制造。
In this paper, the author comprehensively reviews the performance characteris- tics, key technique index of the N68-N83 series nano-vitrified bond as well as the applica- tion development of vitrified bond superhard tools. Many advantages of vitrified bond superhard tools are pointed out, including structure of adjustable, good self-sharpening, long wear life, non-protective atmosphere air pressure sintering, large quantities of low cost production, etc. The long-time existing contradiction between low melting point and high strength has been solved with the use of nano-vitrified bond. The sintering tempera- ture can be as low as 680℃ while binder bending strength can be higher than 100Mpa. According to different requirements, the sintering temperature and porosity rate can range from 680℃ to 850℃ and from 0 to 95% respectively. Nano vitrified bond is suitable for all size particles （from 60 mesh to WO. 5） diamond and cFIN tools manufacture.
出处
《超硬材料工程》
CAS
2013年第1期20-24,共5页
Superhard Material Engineering
