Corrosion behavior of rare earth modified WC-12Co coating-Reference-Cited by-同舟云学术

Corrosion behavior of rare earth modified WC-12Co coating

Published:2015-04-23 Issue:10n11 Volume:29 Page:1540029
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

Liu Yan¹,Chen Hui¹,Ceng Shengbo¹,Gou Guoqing¹,Tu Mingjing²

Affiliation:

1. Department of Materials Science and Engineering, Southwest Jiaotong University, No. 111, Beiyiduan, Erhuan Road, Chengdu 610031, P. R. China

2. Department of Materials Science and Engineering, Sichuan University, No. 24, Nanyiduan, Yihuan Road, Chengdu 610041, P. R. China

Abstract

Rare earth has been widely used in materials manufacturing to improve hardness and toughness. In this paper, conventional, nano-modified and CeO 2 modified WC-12Co coatings are produced by using high speed oxygen flaming (HVOF) spraying technology. Long-term immersion and electrochemical tests of these coatings in 3.5 wt.% NaCl solution are conducted. The surface morphologies were observed to investigate the corrosion mechanisms. The results show CeO 2 modified WC-12Co coatings to possess the best corrosion resistance but the nano-modified WC-12Co coating has the worst performance. Results suggest that the improvement of corrosion resistance for CeO 2 modified WC-12Co coating can be attributed to the enhancement of interfacial strength between Co binder phase and WC particles.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979215400299

Reference13 articles.

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2. Wear and corrosion behaviour of thermally sprayed cermet coatings

3. Wear and corrosion performance of WC-10Co4Cr coatings deposited by different HVOF and HVAF spraying processes

4. Assessment of the corrosion rates and mechanisms of a WC–Co–Cr HVOF coating in static and liquid–solid impingement saline environments