ENHANCED NUCLEATION AND SMOOTHNESS OF NANOCRYSTALLINE DIAMOND FILMS VIA W-C GRADIENT INTERLAYER

摘要：

CVD diamond coating was deposited on to 13％wt. Co-containing tungsten cemented carbide surfaces using a hot filament chemical vapor deposition (HFCVD) to improve wear properties and performance of WC-13％wt.Co. Prior to the deposition of the diamond films, a W-C gradient intermediate layer had been sputtered on WC-13％wt.Co. The surface and cross-section morphology, phase transformation, and grain size distribution of the samples were investigated by means of field emission scanning electron microscope (SEM), X-ray diffractometer (XRD), and atomic force microscope (AFM), respectively. The results show that W-C gradient intermediate layers can effectively reduce the diffusion of Co in cemented carbide substrates during diamond deposition process, resulting high nucleation density and ultra smooth nanocrystalline diamond films.

关键词： Nanodiamond films cemented carbide interlayer

作者: QIUPING WEI ZHIMING YU LI MA DENGFENG YIN

作者单位: School of Materials Science and Engineering, Central South University, Changsha, 410083, Peoples Re School of Materials Science and Engineering, Central South University, Changsha, 410083, Peoples Re Key State Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, Peoples Repu

会议类型: 国际会议

会议名称: 第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)

会议地点: 哈尔滨

会议语种:英文

页码: 1676-1682

在线出版日期: 2008-09-03（万方平台首次上网日期，不代表论文的发表时间）