Paper Title:
Hardness and Wear Resistance of Ni/Al2O3 Composite Coatings by Electrodeposition
  Abstract

Ni/Al2O3 composite coatings were prepared by direct current (DC), single pulse current (PC) and pulse reversal current (PRC), respectively. The hardness and wear resistance of the coatings were investigated and the morphology and elements distribution in cross-section were analyzed by the application of SEM/EDS, XRF and XRD equipped with stress measuring device. The results show that the hardness of the three kinds of coatings increase with increasing Al2O3 content. The coating prepared by PRC plating exhibits higher hardness and better wear resistance, while that of DC plating has lower hardness and poorer wear resistance. The higher hardness and better wear resistance of coating of PRC plating can be ascribed to fine microstructure and weaker stress between substrate and coatings.

  Info
Periodical
Advanced Materials Research (Volumes 154-155)
Edited by
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Pages
654-657
DOI
10.4028/www.scientific.net/AMR.154-155.654
Citation
L. M. Chang, J. H. Liu, R. J. Zhang, "Hardness and Wear Resistance of Ni/Al2O3 Composite Coatings by Electrodeposition", Advanced Materials Research, Vols. 154-155, pp. 654-657, 2011
Online since
October 2010
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$32.00
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