Novel Pretreatment of Hard Metal Substrate for Better Performance of Diamond Coated Cutting Tools
来源期刊：材料热处理学报2004年第5期
论文作者：LU Fan-xiu CHEN Guang-chao MIAO Jin-qi HE Li-fu TANG Wei-zhong LI Cheng-ming
关键词：diamond-coated cutting tools; pre-treatment; nano-micro crystalline composite diamond coating;
摘 要：A surface engineering approach for a novel pre-treatment of hard metal tool substrate for optimum adhesion of diamond coatings is presented. Firstly, an alkaline solution was used to etch the WC grains to generate a rough surface for better mechanical interlocking. Subsequently, surface Co was removed by etching in acid solution. Then the hard metal substrate was boronized to form a compound interlayer which acted as an efficient diffusion barrier to prevent the outward diffusion of Co. Novel nano-microcrystalline composite diamond film coatings with a very smooth surface was deposited on the surface engineering pre-treated hard metal surface. Promising results of measurement in adhesion strength as well as field cutting tests have been obtained.
LU Fan-xiu1，CHEN Guang-chao1，MIAO Jin-qi1，HE Li-fu1，TANG Wei-zhong1，LI Cheng-ming1
(1.University of Science and Technology Beijing, Beijing 100083, China)
摘要:A surface engineering approach for a novel pre-treatment of hard metal tool substrate for optimum adhesion of diamond coatings is presented. Firstly, an alkaline solution was used to etch the WC grains to generate a rough surface for better mechanical interlocking. Subsequently, surface Co was removed by etching in acid solution. Then the hard metal substrate was boronized to form a compound interlayer which acted as an efficient diffusion barrier to prevent the outward diffusion of Co. Novel nano-microcrystalline composite diamond film coatings with a very smooth surface was deposited on the surface engineering pre-treated hard metal surface. Promising results of measurement in adhesion strength as well as field cutting tests have been obtained.
关键词:diamond-coated cutting tools; pre-treatment; nano-micro crystalline composite diamond coating;
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