| YIN Cheng-hui,PAN Ji-lin,CHEN Jun-hang,BAI Zi-heng,LI Zhao-liang,YU Wei,FENG Li-jun,XIAO Kui.Corrosion Life Assessment of Stainless Steel in Tropical Marine Atmosphere[J],51(4):183-193, 246 |
| Corrosion Life Assessment of Stainless Steel in Tropical Marine Atmosphere |
| Received:January 27, 2021 Revised:August 31, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.04.018 |
| KeyWord:stainless steel marine atmospheric environment indoor accelerated corrosion indoor and outdoor correlation |
| Author | Institution |
| YIN Cheng-hui |
National Materials Corrosion and Protection Data Center, Beijing , China;Institute for Advanced Materials and Technology, Beijing , China |
| PAN Ji-lin |
Sichuan Chengdu Soil Environmental Material Corrosion National Observation and Research Station, Chengdu , China |
| CHEN Jun-hang |
National Materials Corrosion and Protection Data Center, Beijing , China;Institute for Advanced Materials and Technology, Beijing , China |
| BAI Zi-heng |
National Materials Corrosion and Protection Data Center, Beijing , China;Institute for Advanced Materials and Technology, Beijing , China |
| LI Zhao-liang |
National Materials Corrosion and Protection Data Center, Beijing , China;Institute for Advanced Materials and Technology, Beijing , China |
| YU Wei |
National Engineering Research Center of Advanced Rolling, University of Science and Technology Beijing, Beijing , China |
| FENG Li-jun |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| XIAO Kui |
National Materials Corrosion and Protection Data Center, Beijing , China;Institute for Advanced Materials and Technology, Beijing , China ;State Key Laboratory of Metal Material for Marine Equipment and Application, Liaoning Anshan , China |
|
| Hits: |
| Download times: |
| Abstract: |
| This paper aimsto provide an indoor accelerated environment spectrum that simulates the marine atmosphere of Wanning and predict the life of typical stainless steel materials. The corrosion resistance of the four stainless steels was macroscopically analyzed by weight loss method, and the types of corrosion products of the four stainless steels were analyzed by X-ray photoelectron spectroscopy (XPS), and the corrosion products of the four stainless steels were analyzed by scanning electron microscopy (SEM). Microscopic analysis of the products, macroscopic electrochemical analysis of four stainless steels by corrosion electrochemical method, and grey correlation method were used to study the correlation between indoor accelerated environmental spectrum and outdoor exposure test in Wanning marine atmospheric environment. The corrosion weight loss rates of the four stainless steels all decreased with the increase of the test time. Among them, the corrosion rate of 430 stainless steel had the most obvious reduction. All four types of stainless steel showed good corrosion resistance in the accelerated indoor corrosion test. The corrosion resistance from good to poor was 2205, 316L, 304, 430 stainless steel. XPS results showed that the very slight corrosion products of 304 stainless steel and 316L stainless steel were mainly Fe2O3 and Fe3O4. The corrosion products of 2205 stainless steel mainly included Fe2O3 and FeOOH or FeCr2O4. The corrosion products of 430 stainless steel were the corrosion products of typical stainless steel, mainly composed of Fe2O3, Fe3O4 and FeOOH composition. Electrochemical analysis showed that the capacitive arc radius of 304, 316L, and 2205 stainless steel increased in the early stage of the test and decreases in the later stage. The capacitive arc radius of 430 stainless steel decreased with the growth of the test period. The corrosion current density and pitting corrosion potential change trend of the four stainless steels were the same. The corrosion current density decreased in the early stage and increased in the later stage, and the pitting corrosion potential continues to increase, reaching a peak in the three cycles and then decreasing. Grey correlation analysis showed that the indoor accelerated test environment spectrum and Wanning outdoor exposure test conform to the principle of corrosion kinetics, and a corrosion prediction model was established. The prediction models for various stainless steels are T304=1 030.499t0.761 524, T316L=1 323.981t0.712 401, T2205=3 451.543t0.858 627, T430=2 813.697t0.632 819. The indoor acceleration spectrum that simulates Wanning's marine and atmospheric environment can effectively simulate Wanning's marine and atmospheric environment, and effectively infer and evaluate the corrosion and life of typical stainless steel materials in the marine atmosphere. |
| Close |
|
|
|