Effect of ion cleaning pretreatment on interface microstructure, adhesive strength and tribological properties of GLC coatings on Al substrates

被引：10

作者：

Chen, Dichun ^{[1
]}

Jiang, Bailing ^{[2
]}

Shi, Huiying ^{[2
]}

Long, Yanni ^{[2
]}

机构：

[1] Xian Univ Technol, Adv Mat Anal & Test Ctr, Xian 710048, Shaanxi Provinc, Peoples R China

[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi Provinc, Peoples R China

来源：

VACUUM | 2012年 / 86卷 / 10期

关键词：

Ion cleaning; GLC; Al substrate; Interface microstructure; Adhesion; Magnetron sputtering; CARBON-FILMS; SPUTTERED CARBON; GRAPHITE-LIKE; DEPOSITION;

D O I：

10.1016/j.vacuum.2012.03.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, a series of ion cleaning procedures (bias and time) were performed on aluminum substrate surface prior to the deposition of graphite-like carbon (GLC) coatings. Special attention has been paid on the interface microstructure, coating/substrate bonding strength and tribological properties. It was found that ion cleaning critically influenced the adhesion and the wear resistance of GLC coatings. The optimization of ion cleaning pretreatment revealed that 400 V/30 min is the best ion cleaning conditions. HRTEM observations on the interfacial region showed that the oxide layer has been removed completely, a strong bonding diffusion interface formed. However, for the low energy ion cleaning (300 V/10 min), TEM observations on the interfacial region between the coating and the Al substrate showed that the oxide contamination still existed. The optimization of GLC layer thickness revealed that the GLC coating with 1 mu m GLC layer exhibited the highest critical load and the lowest friction coefficient of 14.7 N and 0.065, respectively. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1576 / 1582

页数：7

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