Characterisation and corrosion behaviour of WAP coating on 300M steel

被引：5

作者：

Ding, Feng ^{[1
]}

Li, Shuqin ^{[1
]}

Zhang, Pingze ^{[1
,2
]}

Wei, Dongbo ^{[1
,3
]}

Chen, Xiaohu ^{[1
]}

Wang, Shiyuan ^{[1
]}

Wang, Zhangzhong ^{[3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Jiangsu, Peoples R China

[2] Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Mat Preparat & Protect Harsh Environm, Nanjing, Jiangsu, Peoples R China

来源：

SURFACE ENGINEERING | 2019年 / 35卷 / 11期

基金：

中国博士后科学基金;

关键词：

WAP coating; 300M steel; corrosion behaviour; protective mechanism; ALUMINUM PHOSPHATE; PERFORMANCE; THICKNESS; BINDING;

D O I：

10.1080/02670844.2019.1607992

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, a special water-based aluminium phosphate (WAP) coating containing primer and finishing layers was applied on 300M steel. The curing temperature of the primer layer was about 250 degrees C and that of the finishing layer was 200 degrees C. The aluminium phosphate binder in both primer and finishing layers was barely crystallised, and the most effective binding phases were Al and aluminium phosphate. WAP coating showed the formation of corrosion product after 1000 h of neutral salt spray test. The results of electrochemical tests showed that the corrosion potential of the WAP coating was significantly higher than that of the high-strength substrate, and the capacitance arc amplitude of the coating was larger than that the substrate. The protection efficiency of WAP coating for 300M steel was 69.1%.

引用

页码：986 / 996

页数：11

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