Title: CVD diamond coating: a technology for tools of future

Authors: Umesh Palnitkar, I-Nan Lin

Addresses: Department of Physics, Tamkang University, Tamsui, Taiwan, ROC. ' Department of Physics, Tamkang University, Tamsui, Taiwan, ROC

Abstract: Possibility of Chemical Vapour Deposited (CVD) diamond coating on precision and complex geometry gave an extra edge over PCDs. Diamond-coating challenges are amplified by the fact that the primary market demand is for diamond coating on existing grades of tungsten carbide or steel tools. In this paper, we have reviewed some of the efforts made in the direction of improving quality and adhesion of diamond films to the respective substrates. With the advent of nanodiamond coating with reduced surface roughness and improved hardness, the machining of Metal Matrix Composites was made more economical.

Keywords: diamond films; adhesion; tool wear; WC-Co; steel; nanodiamond coating; surface roughness; hardness; metal matrix composites; MMC machining; CVD diamond coating; tool coatings; chemical vapour deposition.

DOI: 10.1504/IJSURFSE.2007.016692

International Journal of Surface Science and Engineering, 2007 Vol.1 No.4, pp.393 - 416

Published online: 15 Jan 2008 *

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