表面技术2018，Vol.47Issue(2)：42-47,6.DOI:10.16490/j.cnki.issn.1001-3660.2018.02.008
喷丸处理对S30432钢650℃蒸汽氧化行为的影响
Effects of Shot Peening on Oxidation Behavior of S30432 Steel in Steam at 650 ℃
摘要
Abstract
The work aims to improve steam oxidation resistance of S30432 steel.Surface shot peening was applied to inside surface of S30432 steel.Steam oxidation experiment was performed to shot-peened and untreated S30432 steel tubes steam oxidation experimental platform,and oxidation behavior of two samples was comparatively studied at 650 ℃ in steam.Weight gain changes of the samples were measured with analytical balance.Surface morphology and microstructure of oxide scale were observed with scanning electron microscope.The untreated S30432 steel exhibited parabolic oxidation kinetics while the treated S30432 steel exhibited complete oxidation resistance.Fe-riched oxide fromed on the surface of the untreated S30432 sample,and the scale thickened quickly due to instability oxidation after nearly 200 h and was 13 tm after 500 h.The treated sample had very thin (about 0.5 μm thick) Cr-enriched scale which exhibited good protective effects.Shot peening treatment can significantly improve steam oxidation resistance of S30432 steel,and generate complete Cr-enriched scale on the surface rapidly by inhibiting instability oxidation.关键词
S30432钢/蒸汽氧化/喷丸/氧化皮/氧化机制Key words
S30432 steel/steam oxidation/shot peening/oxide scale/oxidation mechanism分类
矿业与冶金引用本文复制引用
王智春,蔡文河,韩哲文,王建国,董树青,蒋楠..喷丸处理对S30432钢650℃蒸汽氧化行为的影响[J].表面技术,2018,47(2):42-47,6.基金项目
华北电力科学研究院有限责任公司自有资金科技项目(KJZ15013)North China Electric Power Research Institute Co.Ltd Own Funds Science and Technology Projects (KJZ15013) （KJZ15013）
