Effect of carbon contents on the structural and mechanical properties of sputtered (AlCrTaTiZr)Cx coatings

Keng-Hao Cheng ,  Ting-Wei Liu ,  Su-Jien Lin ,  Jien-Wei Yeh 

Department of Materials Science and Engineering, National Tsing Hua University (NTHU), 101, Sec 2, Kuang-Fu Road, Hsinchu 30013, Taiwan

Abstract

The (AlCrTaTiZr)Cx films are deposited onto Si substrates and cemented carbide plates by dual-gun RF magnetron sputtering. The carbon contents are controlled by tuning the applied power of each target, and ranged from 0 to nearly 50 at.% determined by EPMA analysis. The influence on the crystal structure, cross-sectional microstructure, hardness and other mechanical properties is also investigated. Without the carbon additions, the AlCrTaTiZr alloy film exhibits an amorphous structure and shows a glass-like microstructure by SEM observation. Another distinguished peak in XRD pattern is found as the carbon atoms are incorporated, which is considered as the multi-element carbide phase. These (AlCrTaTiZr)Cx films perform a nanocomposite structure with FCC carbide nanocrystallites embedded in an amorphous alloy matrix. The hardness and modulus are increasing with the raised carbon contents. The friction coefficient and wear rate of coatings are also improved by carbon addition.

Legal notice
  • Legal notice:

    Copyright (c) Pielaszek Research, all rights reserved.
    The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
    In every case, proper references including Author(s) name(s) and URL of this webpage: http://science24.com/paper/18410 must be provided.

 

Related papers
  1. A novel light high-entropy alloy Al20Be20Fe10Si15Ti35

Presentation: Oral at E-MRS Fall Meeting 2009, Symposium I, by Keng-Hao Cheng
See On-line Journal of E-MRS Fall Meeting 2009

Submitted: 2009-05-11 13:30
Revised:   2009-06-07 00:48
Google
 
Web science24.com
© 1998-2021 pielaszek research, all rights reserved Powered by the Conference Engine