Synergistic effect of ultrasonic cavitation erosion and corrosion of WC-CoCr and FeCrSiBMn coatings prepared by HVOF spraying

被引：85
作者：
Hong, Sheng [1 ]
Wu, Yuping [1 ]
Zhang, Jianfeng [1 ]
Zheng, Yugui [2 ]
Zheng, Yuan [3 ]
Lin, Jinran [4 ]
机构：
[1] Hohai Univ, Inst Met & Protect, Coll Mech & Mat, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China
[3] Hohai Univ, Natl Engn Res Ctr Water Resources Efficient Utili, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
[4] Nanjing Agr Univ, Coll Engn, Nanjing 210031, Jiangsu, Peoples R China
来源：
ULTRASONICS SONOCHEMISTRY | 2016年 / 31卷
基金：
中国国家自然科学基金;
关键词：
HVOF; WC-CoCr; FeCrSiBMn; Corrosion; Cavitation; Synergism; WEAR BEHAVIOR; RESISTANCE; OXYGEN; MICROSTRUCTURE; PARAMETERS; BULK; IRON; STEEL; GLASS; TI;
D O I：
10.1016/j.ultsonch.2016.02.011
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The high-velocity oxygen-fuel (HVOF) spraying process was used to fabricate conventional WC-10Co-4Cr coatings and FeCrSiBMn amorphous/nanocrystalline coatings. The synergistic effect of cavitation erosion and corrosion of both coatings was investigated. The results showed that the WC-10Co-4Cr coating had better cavitation erosion-corrosion resistance than the FeCrSiBMn coating in 3.5 wt.% NaCl solution. After eroded for 30 h, the volume loss rate of the WC-10Co-4Cr coating was about 2/5 that of the FeCrSiBMn coating. In the total cumulative volume loss rate under cavitation erosion-corrosion condition, the pure cavitation erosion played a key role for both coatings, and the total contribution of pure corrosion and erosion-induced corrosion of the WC-10Co-4Cr coating was larger than that of the FeCrSiBMn coating. Mechanical effect was the main factor for cavitation erosion-corrosion behavior of both coatings.(C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：563 / 569
页数：7
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