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Research on Microstructure and Tribological Properties of Cr-Based Hard Coatings

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Abstract:

In this paper, three kinds of Cr-based hard coatings have been studied for its structural, mechanical and tribological properties at room temperature. By the technology of closed field unbalanced magnetron sputter ion plating (CFUMSIP), CrN CrAlN and CrTiAlN hard coatings were deposited onto DC53 cold die steel and silicon (100) substrate. The coatings were characterized by means of field emission scanning electron microscopy (FESEM), X-ray diffractometer (XRD), microhardness tester, optical microscope and ball-on-disc tribometer, in order to check their structural, as well as to determine the mechanical and tribological properties. The experimental results showed that the CrTiAlN coating performed better than the CrN coating and the CrAlN coating in terms of mechanical and tribological properties. The wear resistances of CrN, CrAlN and CrTiAlN coatings have been significantly improved compared with DC53 steel substrate.

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Periodical:

Advanced Materials Research (Volume 811)

Pages:

126-130

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.811.126

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Online since:

September 2013

Authors:

Bai Jun Shi, Yuan Ping Peng, Si Chi Wu, Hang Li

Keywords:

Closed Field Unbalanced Magnetron Sputter Ion Plating (CFUMSIP), Cr-Based Hard Coatings, Microstructure, Tribological Property

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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