Abstract
The galvanic corrosion behavior of Cu-Ni Alloy(B10)/high strength steel (921A) has been studied using a zero-resistance ammeter (ZRA) in seawater at different temperatures. As well as it was systemically investigated by weight loss measurements, electrochemical methods and scanning electron microscope.Results showed 921A acts as the anode and B10 act as the cathodes. The effect of temperature on the galvanic corrosion is important, the corrosion rate became higher with the temperature increased.
Highlights
Along with the development of ocean engineering technology, Marine engineering facilities are composed by many kinds of metal alloy materials[1,2]
Materials damage caused by galvanic corrosion still frequently happen in ocean engineering, After analyzing the causes, in addition to protective measures still needing to improve, corrosion behaviors rule and corrosion mechanism, influence factors all aspects should further study in the galvanic corrosion system[5-7]
As galvanic corrosion is great dangerous to safety of marine structures, the galvanic corrosion research on metal materials adopted by marine structures can provide data base and technical foundation for the design of material selection and corrosion protection, that has important theoretical significance and economic value
Summary
Along with the development of ocean engineering technology, Marine engineering facilities are composed by many kinds of metal alloy materials[1,2]. Traditional materials supporting system are constantly updated, so inevitably two or more metal occur electrical connection easy to form galvanic corrosion, that engineering design personnel adopted protective measures, such as coating, cathodic protection and insulation resistance and so on according to the existing research achievement[3,4]. Materials damage caused by galvanic corrosion still frequently happen in ocean engineering, After analyzing the causes, in addition to protective measures still needing to improve, corrosion behaviors rule and corrosion mechanism, influence factors all aspects should further study in the galvanic corrosion system[5-7]. The objective of this work was to study the effect of temperature on the galvanic corrosion between Cu-Ni Alloy(B10) and high strength steel(921A) in seawater by using the corrosion weight-loss method, electrochemical method and surface analysis techniques
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