Title: Interfacial reaction and friction properties of Fe-based TiC composite coating

Authors: Qiuzhi Gao; Yongxue Niu; Fu Qu; Yingling Wang

Addresses: School of Resources and Materials, Northeastern University, Qinhuangdao, Qinhuangdao City, Hebei Province, 066000, China ' School of Resources and Materials, Northeastern University, Qinhuangdao, Qinhuangdao City, Hebei Province, 066000, China ' School of Resources and Materials, Northeastern University, Qinhuangdao, Qinhuangdao City, Hebei Province, 066000, China ' School of Resources and Materials, Northeastern University, Qinhuangdao, Qinhuangdao City, Hebei Province, 066000, China

Abstract: TiC ceramic particles reinforced Fe-based composite coatings were prepared, and melting under a GTAW torch. Morphologies and products of the interfacial layers were examined by SEM and XRD, respectively, and the friction properties of the coatings were also investigated. The results show that Fe_9.64Ti_0.36 intermetallic compound forms in the interfacial layer, and the thickness of the interfacial layer of composite coating is about 0.5 mm under the current GTAW parameters. The friction properties decrease while increasing the coating thickness to above 0.5 mm, and the friction properties of interfacial layer are higher than that of surface TiC coating. The thickness of the reaction layer plays more important role on the friction properties than TiC coating.

Keywords: Q235 steel; TiC composite coatings; titanium carbide; interfacial reaction; friction properties; ceramic particles; iron; intermetallic compounds; coating thickness; TiC coating; gas tungsten arc welding; GTAW.

DOI: 10.1504/IJSURFSE.2016.075313

International Journal of Surface Science and Engineering, 2016 Vol.10 No.1, pp.1 - 10

Received: 06 Sep 2014
Accepted: 13 Nov 2014
Published online: 12 Mar 2016 *

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