CVD micron diamond powders

摘要：

　　The conventional diamond powders (< 10 μm) are generally produced from crushing the large-sized diamonds synthesized by high-pressure and high-temperature (HPHT) technique,whereas they have many morphological imperfections.In the present work,the hot filament chemical vapour deposition (HFCVD) technique is employed for synthesizing such diamond powders.A great many of micron diamonds are grown simultaneously but independently onto a large-area substrate.First,the seeds with an appropriate density approximately 1.3×1010 m-2 are dispersed evenly onto a mirror-polished silicon wafer by using a spin coater machine.Afterwards,the regrowth mechanism of seeds is mainly discussed.The results demonstrate that the unwanted spontaneous and secondary nucleation play a determinant role in keeping well in the morphology of crystals and inhibiting the poly-crystals growth.

关键词： micron diamond diamond seed hot filament CVD

作者: T.Zhang F.H.Sun B.Shen Z.M.Zhang

作者单位: School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,China

会议类型: 国际会议

会议名称: 16th International Symposium on Advances in Abrasive Technology(ISAAT2013) in conjunction withthe 17th Chinese Conference of Abrasive Technology(CCAT2013)(第16届国际磨粒技术会议暨第17届全国磨粒技术学术会议)(

会议地点: 杭州

会议语种:英文

页码: 495-499

在线出版日期: 2013-09-23（万方平台首次上网日期，不代表论文的发表时间）