CREATION OF STRONG ADHESIVE DIAMOND COATINGS ON HARD ALLOY BY ELECTRIC-SPARK ALLOYING

被引：8
|
作者：
Azarova, E. V. [1 ]
Levashov, E. A. [1 ]
Ralchenko, V. G. [2 ]
Bolshakov, A. P. [2 ]
Ashkinazi, E. E. [2 ]
机构：
[1] Natl Res Technol Univ, Moscow Inst Steel & Alloys NITU MISiS, Moscow, Russia
[2] Nat Sci Res Ctr, Prokhorov Inst Gen Phys TsENI IOF RAN, Moscow, Russia
来源：
METALLURGIST | 2010年 / 54卷 / 7-8期
关键词：
hard alloy; electric-spark alloying; CVD-analysis; cutting tool; adhesion; DEPOSITION;
D O I：
10.1007/s11015-010-9333-y
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In order to prepare strong adhesive diamond coatings on hard alloy, it is proposed to use as an underlayer a coating obtaining by electric-spark alloying (ESA) with both diamond-free and diamond-containing chromium electrodes. The optimum alloying regime is found for the surface of hard alloy VK6 (WC-6% Co) with electrodes providing relatively low roughness, high continuity and thickness (4-7 mu m) of underlayers, sufficient for resolving this problem. Phase formation of the underlayer on the hard alloy surface is studied. Use of ESA technology provides significantly higher adhesion of a diamond coating to a tool.
引用
收藏
页码：523 / 529
页数：7
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