KINETIC CHARACTERISTICS OF GROWTH OF METASTABLE PITS ON AMORPHOUS Ni ALLOY

J Chin Soc Corr Pro

1997, Vol. 17

Issue (3): 161-166 DOI:

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KINETIC CHARACTERISTICS OF GROWTH OF METASTABLE PITS ON AMORPHOUS Ni ALLOY

ZUO Yu FU Shi (Beijing University of Chemical Technology)

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Abstract

The kinetic behavior of growth of metastable pits on amorphous NiCrFeSiB alloy in NaCl solution was studied using the potentiostatic polarization method. The growth current of metastable pits increased according to the formula I-I0=k(t-t0)2, with the parameter k valeus representing growth rates of metastable pits following lognormal distribution. As potential increased, both the average k and maximum k values increased remarkably. The peak currents for metastable pits also follow lognormal distribution and rise with potential. A two stage growth process for metastable pits was suggested.

Key words: Pitting Current fluctuations Distribution of growth rates

Received: 25 June 1997

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Cite this article:

ZUO Yu FU Shi (Beijing University of Chemical Technology). KINETIC CHARACTERISTICS OF GROWTH OF METASTABLE PITS ON AMORPHOUS Ni ALLOY. J Chin Soc Corr Pro, 1997, 17(3): 161-166.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1997/V17/I3/161

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