Corrosion and wear resistance of a Fe-based amorphous coating in underground environment

被引：91
作者：
Guo, R. Q. [1 ]
Zhang, C. [1 ]
Yang, Y. [1 ]
Peng, Y. [1 ]
Liu, L. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
来源：
INTERMETALLICS | 2012年 / 30卷
基金：
中国国家自然科学基金;
关键词：
Corrosion; Glasses; metallic; Tribological properties; Coatings; intermetallic and otherwise; STAINLESS-STEEL COATINGS; NACL AQUEOUS-SOLUTION; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; PVD COATED STEELS; 3.4-PERCENT NACL; ALLOY COATINGS; HOT CORROSION; BEHAVIOR; HVOF; PERFORMANCE;
D O I：
10.1016/j.intermet.2012.03.026
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fe-based amorphous coating with composition of Fe49.7Cr18Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 has been prepared on a mild steel substrate by High velocity air fuel (HVAF) process. Microstructural characterization showed that the coating exhibits very dense structure with a porosity of 0.4% and compact bonding with the substrate. Polarization tests indicated that the coating presents superior corrosion resistance in simulated groundwater: EIS measurements revealed that although the solution penetrated into the coating defects, the corrosion process could slow down due to the plugging of the defects by corrosion products. It was also found that the coating possesses good dry wear resistance and fatigue wear mechanism dominated the friction process. The present results imply that the Fe-based amorphous coating is promising for industry applications in underground environment, such as the storage of spent nuclear fuels. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：94 / 99
页数：6
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