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Microstructure and Wear Properties of TiC/Fe-Based Composite Coating Prepared by PTA Weld-Surfacing Process

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Abstract:

The TiC/Fe-based composite coating was fabricated by plasma transferred arc (PTA) weld-surfacing process on substrate of Q235 steel with the mixture of ferrotitanium, ferrochromium and ferrosilicium powders. The microstructure and wear properties of the coating were investigated by means of X-ray diffraction (XRD), scanning electron micrograph (SEM), energy dispersive X-ray analysis (EDS), microhardness test and wear test. The results show that the coating consists of TiC, (Cr,Fe)7C3 and austenite. The composite coating is metallurgically bonded to the Q235 steel substrate. TiC particles formed by PTA weld-surfacing process presented cubic or “dendrite flower-like” morphology. The wear-resisting property of the coating was greatly improved compared with the substrate. The coating has excellent adhesive wear and grinding abrasion resisting force.

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Info:

Periodical:

Advanced Materials Research (Volumes 652-654)

Pages:

1780-1786

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.1780

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Online since:

January 2013

Authors:

Zhong Li Zhao*, Kai Fang Dang, Jun Hai Liu, Da Ming Wu, Ying Liu, Hai Peng Yu, Xiu Ting Zheng

Keywords:

Composite Coating, Plasma-Transferred Arc Weld-Surfacing, Tic Particles, Wear Resistance

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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