Manufacturing and Evaluatingdiamond Thin Films and Grinders through Artificial Diamond-Pure Ni, -Ni-Cr, and -Cr-Based Alloy Composite Electroplating

Owing to having extremely high hardness and being feasible for mass production via synthesis, artificial diamonds are widely used as hardening surface treatments and grinder materials for precision ceramic materials. The above-mentioned purposes is feasible through composite electroplating. Based on our research results of trivalent Cr electroplating, artificial diamond-Ni, -Ni alloy and -Cr alloy composite electroplating will be performed in this project. Mechanical properties, wear-resistance and electrochemical corrosion behavior of composite electrodeposits will be evaluated and their grinding ability against aluminum oxide will be estimated. This project will be performed for two years. Artificial diamonds with three different sizes of 250 nm, 30 and 80 |im will be used for composite electroplating. The nano-sized particles are used for electroplating hardening thin films; while micrometer-sized particles are used for making grinders. In the first year of the project, developing artificial diamond-Ni, Ni alloy composite electrodeposits for hardening thin films and grinders are mainly concerned. In the first year, artificial diamond-Ni and -Ni alloy composite electrodeposits will be made to be hardening thin films and grinders. Meanwhile, their properties will be evaluated and analyzed. In the second year, hardening thin films and grinders will be made from artificial diamond-Cr alloy composite electrodeposits. Their properties and performance will be tested and evaluated. Diamond grinders will be composite-electroplated on the medium carbon steel in a cylinder form; while, diamond thin films on the medium carbon steel in a disc shape. Microhardness, wear-resistance, electrochemical corrosion resistance of composite electrodeposits will be measured and evaluated and grinding forces of diamond grinders will be tested. After grinding and wear-resistance tests, surface morphologies of composite electrodeposits and workpieces will be examined to ensure the properties and performance of diamond thin films and diamond grinders. After conducting this two-year project, the experimental and analytical results will be published in SCI-related journals. Besides, the experimental results and technical skills would be referred and applied in industry.

Project ID:PB10408-5698
External Project ID:MOST104-2221-E182-003-MY2