Effects of Surface Modification on Improvement of Diamond Coating on Tungsten Carbide Cutting Tool

Chii-Ruey Lin 1, Minh-Khoa Bendao 2, and Chi-Wen Liou 2
1. Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, Taiwan
2. Graduate Institute of Mechanical and Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan
Abstract—In our present work, surface modification techniques including Co removal and micro blasting were developed for CVD diamond film coating process on tungsten carbide router bit. Microwave plasma jet chemical vapor deposition system was employed to deposit diamond films onto the as-prepared WC router. Scanning Electron Microscopy (SEM) and Optical Microscopy (OM) were used to investigate the surface morphology of the samples. Raman spectroscopy and energy-dispersive X-ray spectroscopy (EDS) were used to analyzed the microstructure and fraction of the films. The result showed that the developed surface modification processes could significant improve the cutting performance and tool life as 220%. The above results indeed demonstrate a potential applications of diamond coating for cemented carbide tools. 
 
Index Terms—diamond, tungsten carbide, chemical vapor deposition, cutting tool

Cite: Chii-Ruey Lin, Minh-Khoa Bendao, and Chi-Wen Liou, "Effects of Surface Modification on Improvement of Diamond Coating on Tungsten Carbide Cutting Tool," International Journal of Mechanical Engineering and Robotics Research, Vol. 5, No. 3, pp. 168-171, July 2016. DOI: 10.18178/ijmerr.5.3.168-171
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