Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


한국표면공학회지 (44권3호 105-116)

Apparatus on Corrosion Protection and Marine Corrosion of Ship

선박의 해양 부식과 부식방지 장치

Kim, Seong-Jong;

목포해양대학교 기관시스템공학부;
Division of Marine System Engineering, Mokpo Maritime University;

DOI : 10.5695/JKISE.2011.44.3.105


Ships and offshore structures are exposed to harsh marine environments, and maintenance and repair are becoming increasingly important to the industry and the economy. The major corrosion phenomenons of metals and alloys in marine environment are pitting corrosion, stress corrosion cracking, crevice corrosion, fatigue corrosion, cavitation-erosion and etc. due to the effect of chloride ions and is quite serious. Methods of protection against corrosion can generally be divided into two groups: anodic protection and cathodic protection. Anodic protection is limited to the passivity characteristics of a material in its environment, while cathodic protection can apply methods such as sacrificial anode cathodic protection and impressed current cathodic protection. Sacrificial anode methods using Al and Zn alloys are widely used for marine structures and vessels intended for use in seawater. Impressed current cathodic protection methods are also widely used in marine environments, but tend to generate problems related to hydrogen embrittlement caused by hydrogen gas generation. Therefore, it is important to the proper maintenance and operation of the various corrosion protection systems for ship in the harsh marine environment.


Marine environment;Corrosion;Sacrificial anode cathodic protection;Impressed current cathodic protection;Hydrogen embrittlement;