| PECVD法制备类金刚石薄膜的摩擦学性能 |
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| 引用本文： | 王庆良,孙彦敏,张磊.PECVD法制备类金刚石薄膜的摩擦学性能[J].材料研究学报,2011,25(1):73-78. |
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| 作者姓名： | 王庆良 孙彦敏 张磊 |
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| 作者单位： | 1.西南科技大学土木工程与建筑学院 绵阳 621000
2.四川大学力学科学工程系 成都 610065 |
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| 基金项目： | 国家杰出青年基金 10925211和西南科技大学博士基金08ZX0108资助项目。 |
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| 摘 要： | 采用射频等离子体增强化学气相沉积法(rf-PECVD),在45钢表面沉积了类金刚石(DLC)薄膜,借助激光拉曼光谱仪(Raman)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和原子力显微镜(AFM),分析了DLC膜的键结构、表面形貌和结构特征,用原位纳米力学测试系统测定了薄膜的硬度.以GCr15钢为摩擦副材料...
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| 关 键 词： | 材料表面与界面 等离子增强化学气相沉积 类金刚石膜 XPS 摩擦磨损 |
| 收稿时间： | 2010-06-11 |
| 修稿时间： | 2010-11-25 |
Tribological Properties of Diamond-like Carbon Films Deposited by PECVD |
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| WANG Qingliang SUN Yanmin ZHANG Lei.Tribological Properties of Diamond-like Carbon Films Deposited by PECVD[J].Chinese Journal of Materials Research,2011,25(1):73-78. |
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| Authors: | WANG Qingliang SUN Yanmin ZHANG Lei |
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| Affiliation: | 1.College of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621000
2.Department of Engineering Mechanics, Sichuan University, Chengdu 610065 |
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| Abstract: | The microstructure and mechanism of fatigue crack initiation of 2024–T3 and 2524–T34 Al alloys were investigated. Four–point bending and tension –tension fatigue tests on the tested alloys with a frequency of 15 Hz, R=0.1 along the rolling direction were conducted at room temperature. It was found that the flat grain was elongated along the rolling direction, showing the laminar grain structure. The amount of coarse and irregular particles and the density of secondary particles distributed in 2024 were much higher than that in 2524. Particles in 2524 distributed stripped along the rolling direction. The majority of fatigue cracks of 2524 were initiated on the coarse β phase second particle, containing Fe, a few of them formed on sites of material defects or slip bands. The intrusion and extrusion induced by slip band in the Al cladding layer provided principal fatigue crack initiation sites for 2024 and 2524 Al–cladding aluminum alloys. |
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| Keywords: | foundational discipline in materials science aluminum alloy the second&ndash phase particle fatigue crack fatigue crack initiation |
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