The Effects of Ti Carbonization on the Nucleation and Oriented Growth of Diamond Films on Cemented Carbide

被引：21
|
作者：
Yu, Xiang [1 ]
Zhao, Xi-an [1 ]
Liu, Ya-yun [1 ]
Hua, Meng [2 ]
Jiang, Xin [3 ]
机构：
[1] China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China
[2] City Univ Hong Kong, MBE Dept, Hong Kong, Hong Kong, Peoples R China
[3] Univ Siegen, Inst Mat Engn, D-57076 Siegen, Germany
来源：
ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 07期
基金：
中国国家自然科学基金;
关键词：
diamond film; nucleation and growth mechanism; Ti carbonization; nucleation; oriented growth; tribological performance; RAMAN-SPECTROSCOPY; DEPOSITION; PRETREATMENT; INTERLAYER;
D O I：
10.1021/am404617m
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To better understand the influence of carbonization of the Ti interlayer on diamond nucleation and growth, a series of Ti/diamond composite films were deposited on cemented carbide (WC:Co) substrates using a two-step deposition technique. The microstructural properties of the composite films were then characterized by scanning electron microscopy, X-ray diffractometry, and Raman spectroscopy, and their tribological properties were evaluated using a ball-on-disc tester and a metalloscope. The results showed that differences in carbonization for five Ti interlayers of different thicknesses led to variations in the preferred orientations of the TiC layers and in the subsequent nucleation and oriented growth of diamond. This suggests that Ti carbonization significantly influences the nucleation and growth of diamond and subsequently causes variations in the tribological properties of the produced diamond films.
引用
收藏
页码：4669 / 4677
页数：9
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