Paper Title:
Microstructure and Wear Resistance of TiC+Cr7C3 Reinforced Ceramal Composite Coating Produced by PTA Weld-Surfacing Process
  Abstract

A new type in situ reinforcing phase TiC+Cr7C3 ceramal composite coating was fabricated on substrate of Q235 steel by plasma transferred arc (PTA) weld-surfacing process using the mixture of ferrotitanium, ferrochromium, ferroboron and ferrosilicium powders. Microstructure and wear performance of the coating were investigated by means of X-ray diffraction (XRD), scanning electron micrograph (SEM), energy dispersive X-ray analysis (EDS), microhardness tester and wear tester. Results show that the composite coating consists of TiC, primary phase Cr7C3 , (Cr,Fe)7C3 and austenite. The composite coating is metallurgically bonded to the Q235 steel substrate. TiC particles present cubic and “dendrite flower-like” shape in the composite coating. The coating has high microhardness and excellent wear resistance under dry-sliding wear test conditions.

  Info
Periodical
Advanced Materials Research (Volumes 97-101)
Edited by
Zhengyi Jiang and Chunliang Zhang
Pages
1377-1380
DOI
10.4028/www.scientific.net/AMR.97-101.1377
Citation
J. H. Liu, J. H. Huang, J. B. Liu, G. X. Song, "Microstructure and Wear Resistance of TiC+Cr7C3 Reinforced Ceramal Composite Coating Produced by PTA Weld-Surfacing Process", Advanced Materials Research, Vols. 97-101, pp. 1377-1380, 2010
Online since
March 2010
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$32.00
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