AN XPS STUDY OF PASSIVE FILM AND ITS BREAKDOWN ON FERRITIC STAINIESS STEEL IN CI~--CONTAINING NEUTRAL SOLUTION

J Chin Soc Corr Pro

1987, Vol. 7

Issue (4): 233-238 DOI:

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AN XPS STUDY OF PASSIVE FILM AND ITS BREAKDOWN ON FERRITIC STAINIESS STEEL IN CI~--CONTAINING NEUTRAL SOLUTION

Hua Huizhong Zhao Guozheng Li Lixia and Yang Wu (Shanghai Research Institute of Materials)

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Abstract In order to look into the mechanism by which alloyed chromium and molybdenum improve the pitting corrosion resistance of high purity ferritic stainless steel to a quantitative XPS technique was employed to study the composition and thickness of the passive film and transient layer as well, Some twelve materials with various Cr and Mo contents were studied in 1N Cl~--containing neutral solution. The results showed that Mo can rather effecetivly retard the depletion of Cr in the transient layer and improve the stability of the passive film itself. The resistance to pitting of the materials containing Mo was thus bettered up because of the enhancement of repassivity of the transient layer.

Received: 25 August 1987

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Hua Huizhong Zhao Guozheng Li Lixia and Yang Wu (Shanghai Research Institute of Materials). AN XPS STUDY OF PASSIVE FILM AND ITS BREAKDOWN ON FERRITIC STAINIESS STEEL IN CI~--CONTAINING NEUTRAL SOLUTION. J Chin Soc Corr Pro, 1987, 7(4): 233-238.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1987/V7/I4/233

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