Effect of TiO₂ films on diamond: oxidation resistance and wear performance

X. P. LiuCollege of Materials Science and Engineering, Hunan University, Changsha410082, China;The Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan411105, ChinaCorrespondence[email protected]

L. WanThe Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan411105, China

W. D. HuCollege of Materials Science and Engineering, Hunan University, Changsha410082, China;The Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan411105, China

Y. WangCollege of Materials Science and Engineering, Hunan University, Changsha410082, China;The Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan411105, China

Abstract

In order to substitute the traditional electroplate which caused electricity wastage and contamination, the TiO₂ film/C (diamond) were prepared by the sol–gel method. The micrograph, structure and properties of TiO₂ film/C were studied using scanning electron microscopy, energy dispersive spectroscopy, Fourier transform infrared spectroscopy, Fourier-Raman and thermogravimetry–differential scanning calorimetry. The results showed that the oxidation temperature of the coated TiO₂ diamond in the air was 650°C, which is higher 150°C than that of the uncoated diamond. For the coated TiO₂ diamond vitrified bond grinding wheel, compared with the uncoated diamond vitrified bond grinding wheel, the hardness was increased 13% and the grinding ratio to the carbide (WC–6 wt-%Co) was also increased 220%.

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Effect of TiO₂ films on diamond: oxidation resistance and wear performance