CN 41-1243/TG ISSN 1006-852X
Volume 44 Issue 3
Jun.  2024
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ZOU Yuyao, TIAN Xiaoqing, GAO Chuanping, HAN Guozhi. Research on chemical modification of nickel coating on diamond particles surface[J]. Diamond & Abrasives Engineering, 2024, 44(3): 304-308. doi: 10.13394/j.cnki.jgszz.2024.0007
Citation: ZOU Yuyao, TIAN Xiaoqing, GAO Chuanping, HAN Guozhi. Research on chemical modification of nickel coating on diamond particles surface[J]. Diamond & Abrasives Engineering, 2024, 44(3): 304-308. doi: 10.13394/j.cnki.jgszz.2024.0007

Research on chemical modification of nickel coating on diamond particles surface

doi: 10.13394/j.cnki.jgszz.2024.0007
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  • Received Date: 2023-12-11
  • Accepted Date: 2024-03-12
  • Rev Recd Date: 2024-02-21
  • Available Online: 2024-06-28
  • A new nickel plating process for diamond wire is explored to eliminate the negative impact of dispersants on the production process of diamond wires. The surface of of Ni-plated diamond particles was first hydroxylated with hydrogen peroxide, and then reacted with dimethyloctadecyl [3-trimethoxysilylpropyl] ammonium chloride to prepare positively charged diamond particles. Finally, the preparing process of diamond wires were optimized. Results show that the surface potential of diamond particles increases from −7.50 mV to 14.10 mV or above after reaction, up to 30.68 mV. The best preparing conditions are as follows: The mass ratio of raw sand to hydrogen peroxide is 2 to 1, with treating time of 1 h; The mass ratio of diamond particles to quaternary ammonium salts is 1 to 2, with treating time of 4 h. In the electroplating process, the diamond particles with chemically modified surface would uniformly migrate towards the cathode without dispersants, the sanding capacity of which could be increased by 20% or more.

     

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