表面技术2017，Vol.46Issue(12)：199-205,7.DOI:10.16490/j.cnki.issn.1001-3660.2017.12.032
Super304H钢在含1.5％SO2模拟烟气中的腐蚀行为研究
Corrosion Behavior of Super304H Steel in 1.5% SO2Simulated Fuel Gas
摘要
Abstract
The work aims to study corrosion behavior and mechanism of Super304H steel in simulated fuel gas at 650 ℃and 700 ℃, respectively. The Super304H steel was placed in simulated fuel gas containing SO2 (volume fraction 1.5%), corrosion kinetics curves were obtained by weighting the sample at intervals. Morphology, composition and phase composition of the corrosion product at different corrosion stages were analyzed with XRD, SEM and EDS. At the initial corrosion stage, corrosionrate of Super304H steel at 700 ℃ was faster than that at 650 ℃. Continuous formation and peeling of corrosion product wereobserved during the corrosion process. Main constituents of the sample at the initial stage were identified as Cr2O3 and Fe2O3 at650 ℃, then Fe3O4 was generated as the corrosion time prolonged. When the sample was corroded at 700 ℃, corrosion productpeeled off more evidently. The corrosion product had a bilayer structure and it was mainly composed of Fe2O3, Cr2O3, Fe3O4 and a small amount of spinel compounds including (Ni,Cr)Fe2O4and CuFe2O4. Sulfide formed in internal layer of the corrosion product. When Super304H steel is placed in the simulated fuel gas containing SO2(1.5 vol%) at 650℃ and 700 ℃, corrosion rate accelerates as the corrosion products form and peel off continuously.关键词
Super304H钢/二氧化硫/模拟烟气/高温腐蚀Key words
Super304H steel/sulphur dioxide/simulated flue gas/high temperature corrosion分类
矿业与冶金引用本文复制引用
汪元奎,黄丽琴,刘光明,张民强,倪进飞,李茂东..Super304H钢在含1.5％SO2模拟烟气中的腐蚀行为研究[J].表面技术,2017,46(12):199-205,7.基金项目
国家自然科学基金(51161022) （51161022）
江西省教育厅科技计划项目(DB201301133,201301050)Supported by the National Science Fundation of China (51161022) and Science and Technology Foundation of Department of Education of Jiangxi Province (DB201301133, 201301050) （DB201301133,201301050）
