Area Ratio of Cathode/Anode Effect on the Galvanic Corrosion of High Potential Difference Coupling in Seawater

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Zhijian^1 ; Wang, Yanming^2 ; Wang, Chunli^3

Heilongjiang Provincial Textile Industry Design Institute, Harbin, China^1

Harbin No. 13 Middle School, Harbin, China^2

College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China^3

关键词: Commercially Pure titaniums;    Copper nickel alloys;    Corrosion behaviour;    Driving voltages;    ELectrochemical methods;    High potential;    Linear growth;    Potential shift;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022046/pdf
DOI  :  10.1088/1757-899X/322/2/022046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The galvanic corrosion behaviours of copper nickel alloy(B10)/low-alloy high strength steel(921A) and commercially pure titanium(TA2)/low-alloy high strength steel (921A) was studied by electrochemical method in seawater with different cathode/anode area ratio(Sc/Sa). Results indicated that 921A is the anode and B10 and TA2 is the cathodes. The Sc/Sa has a significant impact on the galvanic corrosion, galvanic corrosion rate of high potential difference coupling showed linear growth with the Sc/Sa, but had extreme because the galvanic potential shift and driving voltage decreases.