摘要
采用电化学极化方法,测试了不同工艺参数条件下钝化膜的电化学特性;采用AFM、XPS分别对钝化膜微观形貌和成分进行了表征;同时检测了钝化试样的耐蚀性、氢脆性和疲劳性能。结果表明,S280不锈钢钝化膜结构致密,主要成分是各种金属氧化物、氢氧化物或羟基氧化物,并且检测到不同类型金属间氧化物的存在。钝化后的S280不锈钢耐蚀性大幅度提高,满足氢脆要求,疲劳性能轻微降低。
The influence of chemical passivation parameters on the properties of S280 ultra high-strength stainless steel was studied by electrochemical polarization test to obtain optimal recipe.The passive film was characterized by atomic force microscopy(AFM)and X-ray photoelectron spectroscopy(XPS)to investigate the morphology and composition of the film respectively.The film performance including corrosion resistance,hydrogen embrittlement and fatigue were also tested.The results showed that processed by optimal recipe,the passive film was dense and composited of various metal oxides,hydroxides or oxyhydroxides,including oxide between different metals.The passivated S280 stainless steel was improved in corrosion resistance remarkably.The passivated S280notched-bars pass 200 htensile test without failure,meeting the hydrogen embrittlement requirement.Moreover,the fatigue property of passivated sample exhibited only a slight decline compared with bare sample.
作者
詹中伟
孙志华
汤智慧
ZHAN Zhong-wei;SUN Zhi-hua;TANG Zhi-hui(Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Materials,Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《腐蚀与防护》
CAS
北大核心
2015年第8期742-747,758,共7页
Corrosion & Protection
关键词
化学钝化
S280超高强度不锈钢
金属氧化物
耐蚀性
氢脆
chemical passivation
S280 ultra high-strength stainless steel
metal oxide
corrosion resistance
hydrogen embrittlement
