点蚀坑参数的最佳分布形式及其在交变载荷下的演化

中国腐蚀与防护学报

1992, Vol. 12

Issue (3): 227-234

研究报告

本期目录 | 过刊浏览

点蚀坑参数的最佳分布形式及其在交变载荷下的演化

周向阳;柯伟

中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室;中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室

THE OPTIMAL PROBABILITY DISTRIBUTION FUNCTION OF PITS AND ITS EVOLUTION UNDER CYCLIC LOADENG

Zhou Xiangyang and Ke Wei (Laboratory of Corrosion Science; Chinese Academy of Sciences)

全文: PDF(1835 KB)

摘要: 通过运用定量金相方法得到了低合金钢A537及不锈钢1Cr18Ni9Ti在含Cl~-溶液中点蚀坑的几何参数,然后用统计回归方法对五种常见的分布函数进行了筛选。结果证明,对效正态分布是点蚀几何参数分布的最佳数学形式。根据实验结果还提出了点蚀坑产生和发展的随机过程模型,解释了点蚀统计分布及其演化规律。此外实验还证实了Pickering的点蚀演化理论。

Abstract：Being immersed in aqueous solution with Cl~- ions,specimens made from a iow alloy steel (A537cl1)or from a stainless steel (1Cr18Ni9Ti)were tested under cyclic liad. Thetests were interrupted on schedule to measure the diameters and depths of the pits on the surfaces of the specimens. Then, by using non-linear regression method,these experimental data were expressed with five kinds of probability distribution functions. Among them lognormal function was demonstrated to be the optimal distribution function with the highest correlation coefficient (>0.99). Moreover, the probabilistic distributions and their evolution behaviours seem to coincide with the stochastic model proposed by the authors and pickering's evolution theory of pitting.

收稿日期: 1992-06-25

基金资助:国家自然科学基金

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引用本文:

周向阳;柯伟. 点蚀坑参数的最佳分布形式及其在交变载荷下的演化[J]. 中国腐蚀与防护学报, 1992, 12(3): 227-234.
. THE OPTIMAL PROBABILITY DISTRIBUTION FUNCTION OF PITS AND ITS EVOLUTION UNDER CYCLIC LOADENG. J Chin Soc Corr Pro, 1992, 12(3): 227-234.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1992/V12/I3/227

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