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中国腐蚀与防护学报  1996, Vol. 16 Issue (4): 275-280    
  研究报告 本期目录 | 过刊浏览 |
Fe—Mn─Al合金的腐蚀性能与钝化膜的研究
朱雪梅;钟曙晖;张彦生
大连铁道学院
CORROSION PERFORMANCE AND PASSIVE FILM OF AN AUSTENITIC Fe-Mn-Al ALLOY
ZHU Xuemei; ZHONG Shuhai; ZHANG Yansheng (Dalian Railway Institute)
全文: PDF(446 KB)  
摘要: 应用阳极极化及AES/XPS技术,研究了Fe-30.8Mn-8.2Al奥氏体合金在pH值为-0.8至15.3的水溶液中的腐蚀性能,并与Fe-30Mn合金、低碳钢、9%Ni低温钢及1Cr13不锈钢进行对比。在所测试的水溶液中,该合金的腐蚀抗力优于低碳钢和Fe-30Mn合金,与9%Ni钢相当,但不及1Cr13不锈钢。Fe-30.8Mn-8.2Al合金在1mol/LNa2SO个中形成的钝化膜的最表层可能为氢氧化物,而膜的主体由Fe2O3、Mn2O3及Al2O3组成。
关键词 Fe-Mn-Al合金水溶液腐蚀钝化膜    
Abstract:The corrosion properties of the austenitic Fe-30.8Mn-8.2Al alloy in a series of aqueous solutions at PH -0.8 to 15.3 and the corrosion protection mechanism induced by adding Al were studied by anodic polarization technique and by AES/ XPS analysis. The corrosion behaviour of the alloy was compared with that of Fe-30Mn alloy, mild steel, cryogenic 9% Ni steel and 1Cr13 stainless steel. The addition of 30 Wt% Mn into mild steel was very detrimental to its corrosion resistance in aqueous solution. The Fe-30Mn alloy only showed passivation behaviour in NaOH solution while the anodic polarization curves of Fe-30.8Mn-8.2Al alloy exhibited a stable passiwtion region in 1M Na2SO4, 10~50% HNO3 and 10~50%NaOH solutions, but in 10% HCI and 3.5% NaCI solutions, no passivation was observed. The corrosion resistance of Fe-30.8Mn-8.2Al alloy in these aqueous solutions was comparable to that of cryogenic 9% Ni steel but inferior to that of 1Cr13 stainless steel. According to AES/XPS analyses, the outermost surfae layer and the main part of the passive film formed on the Fe-30.8Mn-Al alloy in 1M Na2SO4 solution probably consisted of the hydroxide and a capture of iron, manganess and aluminium oxides.
Key words Fe-Mn-Al alloy    Aqueous solution corrosion    Passive film
收稿日期: 1996-08-25     
基金资助:国家自然科学基金;;金属腐蚀与防护国家重点实验室资助

引用本文:

朱雪梅;钟曙晖;张彦生. Fe—Mn─Al合金的腐蚀性能与钝化膜的研究[J]. 中国腐蚀与防护学报, 1996, 16(4): 275-280.
. CORROSION PERFORMANCE AND PASSIVE FILM OF AN AUSTENITIC Fe-Mn-Al ALLOY. J Chin Soc Corr Pro, 1996, 16(4): 275-280.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y1996/V16/I4/275

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