College of Engineering;
Ocean University of China;
Qingdao 266100;
P.R.China;
Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology;
Institute of Oceanographic Instrumentation;
Shandong Academy of Sciences;
Qingdao 266100;
P.R.China;
Qingdao Institute of Marine Corrosion;
Qingdao 266071;
P.R.China;
underwater; wet; welding; corrosion; rate; corrosion; product; protective; property;