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山德维克、可乐满(英)有限公司研制出了CC620和CC950陶瓷品种,以扩大其现有刀具材料的使用范围。这两个品种,含有氧化物、碳化物和氮化物,硬度高,抗磨性能好,具有高的抗塑性变形性能和良好的化学稳定性,切削性能介于GC硬质合金和CBN刀具之间。用于加工铸铁和钢的CC620陶瓷是一种纯陶瓷它以氧化铝为基体材料,加有少量的氧化钴,以改善刀具韧性。CC620陶瓷具有相当高的刃口强度和良好的抗磨损性能,塑性变形
Sandvik, Coromant (UK) Ltd. has developed CC620 and CC950 ceramic grades to expand the range of use of their existing tool materials. The two varieties, which contain oxides, carbides and nitrides, have high hardness, good wear resistance, high resistance to plastic deformation and good chemical stability with machinability between that of GC cemented carbide and CBN tools . The CC620 ceramic used for processing cast iron and steel is a pure ceramic. It uses alumina as the base material and a small amount of cobalt oxide to improve tool toughness. CC620 ceramic has a very high edge strength and good wear resistance, plastic deformation