Abstract
Corrosion in natural seawater is difficult to simulate in a laboratory due to the slow rate and complexity of the corrosion process which involves multiple influential factors. This paper aims to explore the quantitative effect of environmental factors on corrosion process and find the best experimental conditions which represent the actual environment and have the best acceleration effect. A new framework is followed in this paper which consists of three parts: design of experiments, outdoor and laboratory corrosion tests, and corrosion mechanism consistency confirmation. A L6(31 × 22) orthogonal experiment is designed in laboratory to study the effect of temperature, salinity, and dissolved oxygen on marine corrosion behavior of B10 copper alloy. In each test, H2O2 is added in seawater to accelerate the corrosion process. Outdoor exposure tests are also conducted in natural seawater. Results show that the corrosion process in laboratory and outdoor follows the same mechanism, in view of corrosion product and morphology, corrosion kinetics, as well as mechanical properties. With the help of quantitative analysis of the test results, a better acceleration condition can be designed.
Highlights
Published: 6 July 2021Corrosion of metals in seawater is a complex process involving multiple factors, which include dissolved oxygen, temperature, salinity, pH [1,2], as well as biological activities [3,4].There have been many researches aiming to distinguish important influential factors and their effects on the corrosion process.The effect of each environmental factor may act in different ways when they are considered individually or together
A simple example is that increase of temperature can lead to the increase of diffusion rate and accelerate the corrosion process
This paper tries to explore the possibility of simulating the outdoor corrosion process under laboratory conditions within a shorter period of test time
Summary
Published: 6 July 2021Corrosion of metals in seawater is a complex process involving multiple factors, which include dissolved oxygen, temperature, salinity, pH [1,2], as well as biological activities [3,4].There have been many researches aiming to distinguish important influential factors and their effects on the corrosion process.The effect of each environmental factor may act in different ways when they are considered individually or together. Corrosion of metals in seawater is a complex process involving multiple factors, which include dissolved oxygen, temperature, salinity, pH [1,2], as well as biological activities [3,4]. There have been many researches aiming to distinguish important influential factors and their effects on the corrosion process. The effect of each environmental factor may act in different ways when they are considered individually or together. Salinity has a similar effect on corrosion rate and its effect on oxygen solubility is even greater [2,5]. The individual effect of pH, temperature, and salinity on corrosion rate can be canceled out, improved, or moderated as a result of the combined effect with another factor [7]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
