Electrodeposition of nanocrystalline zinc on steel for enhanced resistance to corrosive wear

被引：46
作者：
Li, Qingyang [1 ]
Lu, Hao [2 ]
Cui, Juan [2 ]
An, Maozhong [1 ]
Li, Dongyang [2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Chem Engn & Technol, 92 West Da Zhi St, Harbin 150001, Peoples R China
[2] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
来源：
SURFACE & COATINGS TECHNOLOGY | 2016年 / 304卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Nanocrystalline zinc; Electrodeposition; Corrosive wear; Mechanical property; Electron work function; PULSE REVERSE ELECTRODEPOSITION; BEHAVIOR; MECHANISM; COATINGS;
D O I：
10.1016/j.surfcoat.2016.07.056
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to increase the resistance of electrogalvanized steel to corrosive wear, nanocrystalline zinc coating was electrodeposited onto the steel substrate using a sulfate bath with polyacrylamide as grain refiner. Corrosive wear tests were performed in a simulated seawater solution to evaluate the performance of the nanocrystalline zinc coating with its grain size around 40 nm, in comparison with that of coarse-grained zinc coating (grain size similar to 5 mu m). It was demonstrated that material loss of the coarse-grained zinc coating was 39 times as large as that of the nanocrystalline one. The considerably higher corrosive wear resistance of the nanocrystalline zinc coating largely benefited from its increased mechanical strength due to nanocrystallization and higher surface activity, which improved the passivation capability with the formation of a more protective oxide scale. Detailed analyses were conducted to clarify the mechanism responsible for the improvements. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：567 / 573
页数：7
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