摘要
采用CVD技术对硬质合金材料涂层时,温度超过1000℃很容易在基体材料表面形成脱碳层。先进行900℃以下的中温TiCN、TiN涂层作为保护层,再进行高温涂层,能有效降低脱碳层的厚度。本文分析了脱碳层对基体材料抗弯强度的影响,并对不同涂层刀片的切削性能进行了对比分析。
When the coatings deposited onto the cemented carbide substrate by chemical vapor deposition method,it is quiet easy to form a decarburized layer on the surface of the substrate if the temperature is above 1000℃.In order to decrease the thickness of the decarburized layer,a TiCN or TiN coating is firstly deposited on the carbide materials as a buffer layer to protect the substrate below the temperature of 900℃,and then the other coatings are processed at a high temperature.The paper investigates the influence of decarburized layer on the bending strength of the substrate material,and comparative analyses the turning performance of the carbide tips covered by different coatings.
出处
《工具技术》
2010年第5期21-23,共3页
Tool Engineering
基金
国家科技支撑计划(2008BAF32B06)
关键词
CVD
硬质合金
脱碳层
抗弯强度
CVD
cemented carbide
decarburized layer
bending strength
