Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd.

Zhengzhou Shine More Superabrasives Co., Ltd.

Junyong Shao

Hui Liu

Yanjun Zhao

Wentao Zhou

Bolun Cao

Xiaolei Wu

Shuai Xu

Hongxing Pan

Mingyao Liu

Jiong Zhao

Juxue Xia

Ning Yan

MPCVD device comprises deposition platform, substrate platform, lifting platform, microwave quartz window, upper cover plate, baseplate, pressure sensors, composite windows, thickness measuring device, visual device, temperature measuring device, plasma diagnostic device, vacuum sealing ring and microwave shielding sealing ring. Reaction cavity is formed by upper cover plate and baseplate, and inlet hole is arranged on top of upper cover plate, while exhaust hole is arranged on baseplate; microwave quartz window is annular shaped and arranged between deposition platform and baseplate, and reaction cavity is isolated from air outside by microwave quartz window; lifting platform is provided with vacuum channel and cooling channel therein; vacuum cavity, which is communicated with vacuum channel, is formed by lower surface of substrate platform and upper surface of lifting platform; and pressure sensor for monitoring gas pressure is arranged in vacuum cavity.

Large-size diamond, MPCVD device and preparation method of large-size diamond

The invention discloses a metal-bonded diamond grinding wheel prepared by self-propagating pressure-less sintering and a preparation method thereof. The metal bonded diamond grinding wheel mainly comprises a working layer and a non-working layer, wherein the working layer comprises metal bond and grinded diamond, the non-working layer is metal bond, and the metal bond in the working layer and non-working layer have the same components that comprise metal powders of Cu, Al, Ni, Ti, Sn, and Co. To prepare the metal-bonded diamond grinding wheel prepared by self-propagating pressure-less sintering solves the problems of high energy consumption and low manufacture efficiency in the current sintering processes of the metal bonded diamond grinding wheel, and improves the binding force of the metal bond to the grinded diamond by forming carbides between the bond and the grinded diamond.

Metal-bonded diamond grinding wheel prepared by self-propagating pressure-less sintering and a preparation method thereof

Growing community of inventors

Zhengzhou, China

Junyong Shao