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| Corrosion Behavior of Two Kinds of Austenitic Stainless Steel in Acid Salt Spray Test |
| Received:March 11, 2020 Revised:March 31, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.06.009 |
| KeyWord:austenitic stainless steel acid salt spray test, 0Cr18Ni9 (passivated) 0Cr18Ni10Ti (passivated) corrosion |
| Author | Institution |
| SHI Yao |
AECC Hunan Aviation Powerplant Research Institute, Zhuzhou , China |
| HUANG Zi-lin |
AECC Hunan Aviation Powerplant Research Institute, Zhuzhou , China |
| YUAN Ke |
AECC Hunan Aviation Powerplant Research Institute, Zhuzhou , China |
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| Abstract: |
| The paper aims to study the corrosion behavior of 0Cr18Ni9 (passivated) and 0Cr18Ni10Ti (passivated) stainless steel in acid salt spray test to provide basis for selection and protection of engine parts. Based on GJB150.11A-2009 “Environmental Test Methods for Military Material-Salt Spray Test”, the pH of the solution was adjusted to 3.5±0.5. With 24h mist spray plus 24h drying as a cycle, two cycles (96 h), 4 cycles (192 h) and 5 cycles (240 h) of acid salt spray tests were carried out. The specimens after acid salt spray test was observed and analyzed by visual check, weighing, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). Both 0Cr18Ni9 (passivated) and 0Cr18Ni10Ti (passivated) had slight corrosion in acid salt spray test. The corrosion is mostly local corrosion and uniform corrosion. Both 0Cr18Ni9 (passivated) and 0Cr18Ni10Ti (passivated) have well corrosion resistance and can meet the requirement of navy engine on acid salt spray corrosion resistance salt spray of materials. But 0Cr18Ni9 (passivated) is a little better than 0Cr18Ni10Ti (passivated). |
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