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Effect of Spray Parameters on the Corrosion Behavior of HVOF Sprayed WC-Co-Cr Coatings
S. Hong; Y. P. Wu; Y. G. Zheng; B. Wang; W. W. Gao; G. Y. Li; G. B. Ying; J. R. Lin
2014
Source PublicationJournal of Materials Engineering and Performance
ISSN1059-9495
Volume23Issue:4Pages:1434-1439
AbstractWC-10Co-4Cr cermet coatings were deposited on the substrate of AISI 1045 steel by using high-velocity oxygen-fuel (HVOF) thermal spraying process. The Taguchi method including the signal-to-noise (S/N) ratio and the analysis of variance (ANOVA) was employed to optimize the porosity and, in turn, the corrosion resistance of the coatings. The spray parameters evaluated in this study were spray distance, oxygen flow, and kerosene flow. The results indicated that the important sequence of spray parameters on the porosity of the coatings was spray distance > oxygen flow > kerosene flow, and the spray distance was the only significant factor. The optimum spraying condition was 300 mm for the spray distance, 1900 scfh for the oxygen flow, and 6.0 gph for the kerosene flow. The results showed the significant influence of the microstructure on the corrosion resistance of the coatings. Potentiodynamic polarization and electrochemical impendence spectroscopy (EIS) results showed that the WC-10Co-4Cr cermet coating obtained by the optimum spraying condition with the lowest porosity exhibits the best corrosion resistance and seems to be an alternative to hard chromium coating.
description.department[hong, sheng ; wu, yuping ; wang, bo ; gao, wenwen ; li, gaiye ; ying, guobing ; lin, jinran] hohai univ, inst met & protect, coll mech & mat, nanjing 210098, peoples r china. [zheng, yugui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; hong, s (reprint author), hohai univ, inst met & protect, coll mech & mat, 1 xikang rd, nanjing 210098, peoples r china. ; wuyuping@hhu.edu.cn
KeywordCorrosion Hvof Spray Parameters Taguchi Method Wc-co-cr Coating Impedance Plane Displays Erosion Behavior Stability Conditions Cutting Parameters Taguchi Method Wear Behavior Steady-state Resistance Optimization Mechanisms
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72853
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
S. Hong,Y. P. Wu,Y. G. Zheng,et al. Effect of Spray Parameters on the Corrosion Behavior of HVOF Sprayed WC-Co-Cr Coatings[J]. Journal of Materials Engineering and Performance,2014,23(4):1434-1439.
APA S. Hong.,Y. P. Wu.,Y. G. Zheng.,B. Wang.,W. W. Gao.,...&J. R. Lin.(2014).Effect of Spray Parameters on the Corrosion Behavior of HVOF Sprayed WC-Co-Cr Coatings.Journal of Materials Engineering and Performance,23(4),1434-1439.
MLA S. Hong,et al."Effect of Spray Parameters on the Corrosion Behavior of HVOF Sprayed WC-Co-Cr Coatings".Journal of Materials Engineering and Performance 23.4(2014):1434-1439.
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