Rongfa CHEN
,
Dunwen ZUO
,
Feng XU
,
Duoseng LI
,
Min WANG
材料科学技术（英文）
The contacting interface between the substrate and water-cooled base is vital to the substrate temperature during diamond films deposition by a DC (direct current) plasma jet. The effects of the solid contacting area, conductive materials and fixing between the substrate and the base were investigated without affecting the other parameters. Experimental results indicated that the preferable solid contacting area was more than 60% of total contacting areal; the particular Sn-Pb alloy was more suitable for conducting heat and the concentric fixing ring was a better setting for controlling the substrate temperature. The result was explained in terms of the variable thermal contact resistance at the interface between substrate and base. The diamond films were analyzed by scanning electron microscopy (SEM) for morphology, X-ray diffraction (XRD) for the intensity of characteristic spectroscopy and Raman spectroscopy for structure.
关键词:
diamond films
,
基体温度
,
连接界面
,
直流等离子体
Yongwei ZHU
,
Feng XU
,
Jianliang SHEN
,
Baichun WANG
,
Xiangyang XU
,
Jianbin SHAO
材料科学技术（英文）
Fourier transform infrared spectroscopy (FT-IR) and ζ-potential were introduced to study the effect of different modification parameters on the surface properties of nanodiamond (ND). Results showed that under stirring grinding conditions, ND hard aggregates were smashed and some active spots on them reacted with surfactant molecules, which led to the increase in its ³-potential and stability. Different models of surface modification were also given in this study.
关键词:
Surface modification
,
null
,
null
,
null
