表面形貌对1Cr11Ni2W2MoV不锈钢耐腐蚀性能的影响
Effect of Surface Morphology on Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel
摘 要
利用扫描电镜和原子力显微镜等方法研究了在偏酸性环境条件下,表面形貌对1Cr11Ni2W2MoV不锈钢耐腐蚀性能的影响.结果表明:1000#砂纸抛光试样的耐腐蚀性能最好,机械磨削试样次之,800#砂纸抛光试样的最差;试样的耐腐蚀性能并不是随着表面粗糙度的降低而增强;这主要是由于1000#砂纸抛光试样具有较高的亚稳态和稳定孔蚀电位,而800#砂纸抛光试样比磨削试样更容易在表面形成腐蚀微电池所引起的.
耐腐蚀性能
不锈钢
surface morphology
corrosion resistance
stainless steel
Abstract
By means of SEM and AFM,the effects of surface morphology on corrosion resistance of 1Cr11Ni2W2MoV stainless steel in weak acid surrounding have been investigated.It is found that the corrosion resistance of the steel does not increase monotonously with the decrease of surface roughness,and the 1000# polished specimens show the best corrosion resistance,but the 800# polished specimens corrode more than the ground specimens.The main reason may be that the 1000# polished specimens have the highest metastable and stable pitting potentials,and the 800# polished specimens generate corrosive cells more easily than the ground specimens.
中图分类号 TG114.3
所属栏目 试验研究
基金项目 航空科学基金资助项目(03B52011);国家自然科学基金资助项目(50275073)
收稿日期 2007/9/6
修改稿日期 2007/12/25
网络出版日期
作者单位点击查看
备注孟波(1976-),男,山东聊城人,讲师,博士.
引用该论文: MENG Bo,GUO Wan-lin,JIANG Yan. Effect of Surface Morphology on Corrosion Resistance of 1Cr11Ni2W2MoV Stainless Steel[J]. Materials for mechancial engineering, 2008, 32(8): 8～11
孟波,郭万林,姜燕. 表面形貌对1Cr11Ni2W2MoV不锈钢耐腐蚀性能的影响[J]. 机械工程材料, 2008, 32(8): 8～11
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【3】Blanc C,Mankowski G.Susceptibility to pitting corrosion of 6056 aluminium alloy[J].Corros Sci,1997,39(5):949-959.
【4】Aballe A,Bethencourt M,Botana F J,et al.Localized alkaline corrosion of alloy AA5083 in neutral 3.5%NaCl solution[J].Corros Sci,2001,43(9):1657-1674.
【5】Zuo Y,Wang H T,Xiong J P.The aspect ratio of surface grooves and metastable pitting of stainless steel[J].Corros Sci,2002,44:25-35.
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【7】Frankel G S,Stockert L,Hunkeler F,et al.Metastable pitting of stainles steel[J].Corrosion,1987,48:429-437.
【8】Pistorius P C,Burstein G T.Growth of corrosion pits on stainless steel in chloride solution containing dilute sulphate[J].Corros Sci,1992,33(12):1885-1897.
【9】Pistorius P C,Burstein G T.Aspects of the effects of electrolyte composition on the occurrence of metastable pitting on stainless steel[J].Corros Sci,1994,36(3):525-538.
【10】Williams D E,Stewart J,Balkwill P H.The nucleation,growth and stability of micropits in stainless steel[J].Corros Sci,1994,36(7):1213-1235.
【11】Burstein G T,Pistorius P C.Surface roughness and the metastable pitting of stainless steel in chloride solutions[J].Corrosion,1995,51(5):380-387.
【12】Zuo Y,Fu S.Surface roughness and metastable pitting of amorphous nickel alloy[J].Corrosion,1998,54(4):313-318.
【13】Sasaki K,Burstein G T.The generation of surface roughness during slurry erosion-corrosion and its effect on the pitting potential[J].Corros Sci,1996,38(12):2111-2120.
【14】Hong T,Nagumo M.Effect of surface roughness on early stages of pitting corrosion of type 301 stainless steel[J].Corros Sci,1997,39(9):1665-1672.
【15】王海涛,左禹,熊金平.表面粗糙度对316L不锈钢亚稳态孔蚀行为的影响[J].中国腐蚀与防护学报,2002,22(3):158-161.
【16】Wang X Y,Wu Y S,Zhang L,et al.Atomic force microscopy and X-ray photoelectron spectroscopy study on the passive film for type 316L stainless steel[J].Corrosion,2001,57:540-546.
【17】孟波,郭万林.表面微观形貌对疲劳强度影响的定量分析[J].机械工程材料,2006,30(5):26-29.
【18】刘文珽,蒋冬滨.飞机结构关键危险部位加速腐蚀试验环境谱研究[J].航空学报,1998,19(4):434-438.
【19】Zhang X P,Yu S R,He Z M,et al.Wetting of rough surfaces[J].Surf Rev Lett,2004,11(1):7-13.
【20】Aballe A,Bethencourt M,Botana F J,et al.Influence of the degree of polishing of alloy AA 5083 on its behavior against localized alkaline corrosion[J].Corros Sci,2004,46:1909-1920.
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