镍代钴WC－9（Ni－Co）硬质合金的研究  

Research of WC-9(Ni-Co) Carbide Substituted Co with Ni

作　　者：杨碧华[1] 周建华[1] 李晋尧 

机构地区：[1]中南工业大学

出　　处：《稀有金属材料与工程》1996年第6期36-39,共4页Rare Metal Materials and Engineering

摘　　要：研究了配碳量与Ｎｉ／Ｃｏ比对ＷＣ－９（Ｎｉ－Ｃｏ）硬质合金抗弯强度的影响。实验结果表明：ＷＣ－３Ｎｉ－６Ｃｏ的配碳量是６．０４ｗｔ％时，其抗弯强度与ＷＣ－９Ｃｏ硬质合金相当；Ｎｉ的分布均匀性对抗弯强度的影响极其重要，粗粒Ｎｉ粉或（和）较多η相的存在都会使硬质合金形成脆性断裂，直接影响合金的抗弯强度。he effect of carbon content and the Ni/ Co ratio in WC-9(Ni-Co) alloy on transverse rupture is investigated systematically. The results show that the transverse rupture strength of WC-3Ni-6Co alloy is equal to that of WC-9Co alloy as the carbon content of WC-3Ni-6Co is adjusted to about 6.04 wt%. It is also show that the effect of the distributive homogeneity of Ni powder on the transverse rupture strengthis very important. Coarse Ni powder and the existence of more η-phase result in the brittle rupture of the carbide and affect directly the transverse rupture strength of the carbide.

关 键 词：硬质合金 镍代钴 碳含量 抗弯强度 

分 类 号：TG135.5[一般工业技术—材料科学与工程]