Enhanced Adhesive Strength of Diamond coated on Polycrystalline Diamond Substrate by Optimized Substrate Component
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-05-01 |
| Journal | 2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME) |
| Authors | Xiaogang Jian, Jibo Hu, Qianli Ma, Jinyao Tang |
| Institutions | Tongji University |
Abstract
Section titled āAbstractāDiamond coating was deposited on polycrystalline diamond (PCD) substrate with CH <inf xmlns:mml=āhttp://www.w3.org/1998/Math/MathMLā xmlns:xlink=āhttp://www.w3.org/1999/xlinkā>4</inf> /H <inf xmlns:mml=āhttp://www.w3.org/1998/Math/MathMLā xmlns:xlink=āhttp://www.w3.org/1999/xlinkā>2</inf> /CO <inf xmlns:mml=āhttp://www.w3.org/1998/Math/MathMLā xmlns:xlink=āhttp://www.w3.org/1999/xlinkā>2</inf> using microwave plasma CVD system. PCD substrates A, B and C which differ in the ratio of metallic binders were predetermined preparation methodology. In order to get better adhesive strength, diamond coating grown on the different PCD substrates was studied. The overall performance of the diamond coating was measured by scanning electron microscope (SEM), Raman spectrum and the Rockwell indentation tests. Results clearly indicate that substrate C is the best substrate among three PCD substrates. In addition, with the decrease of Co and W content in the matrix, the increase of Cu content is helpful to improve the adhesion of diamond bit coating, which provides guidance for the industrialization of diamond bit coating.