Mr. Wenhao Du Profile

Wenhao Du

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Proceedings Article | 13 October 2010 Paper

Analysis and evaluation of surface characteristics of titanium coating on diamond using combined method of wavelet and fractal

Wenhao Du, Wenmao Yang, Tao Sun, Baorui Wang

Proceedings Volume 7656, 76564D (2010) https://doi.org/10.1117/12.865529

KEYWORDS: Coating, Fractal analysis, Diamond, Titanium, Wavelets, Spatial frequencies, Wavelet transforms, Sputter deposition, Ions, Analytical research

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Nature diamond cutters are important tools to manufacture high precision optics glasses, and it is a normal method to make such cutter that soldering diamond grain with titanium coating on tool base. However, surface characteristics of titanium coating determine how much force that diamond grain joined with tool base. This paper introduces the research of surface characteristics of titanium coating on diamond grain based on AFM which uses its contacting mode to get measuring data of surface topography. Firstly, the measuring data are analyzed using 2D power spectrum algorithm to obtain spectrum energy distribution about spatial frequency. Fractal dimension is then calculated from the radius spectrum, and surface characteristics of titanium coating are evaluated using stationary wavelet transform where feature separation thresholds takes as an important role based on the fractal dimension. Coating experiments show that such method can reveal quality information of titanium coating on diamond grain comprehensively and thoroughly, thus it can offer good experimental reference to optimizing titanium coating parameters.

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