通过报告点蚀电位的比例危险生存模型更新点蚀电阻当量数

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2024-11-20 DOI:10.1016/j.electacta.2024.145355

Dimitri Soccol

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引用次数: 0

摘要

尽管点蚀电阻当量数（PREN）只包含少数几种成分元素，但却被广泛用于评估不锈钢的抗点蚀能力。通过对公共点蚀电位数据集进行统计分析，重新制定了 PREN。通过多重估算和生存分析原则（如普查和混合效应）发现并妥善解决了统计缺陷。这种统计框架允许在更新的 PREN 中同时纳入表面预处理和测试环境以及合金成分。Weibull 和非参数基线危险函数的比较表明，点蚀电位可能不是 Weibull 分布。

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An updated Pitting Resistance Equivalent Number by proportional hazard survival models of reported pitting potentials

The Pitting Resistance Equivalent Number (PREN) is widely applied to assess pitting corrosion resistance of stainless steel, despite containing only a few compositional elements. A reformulation of the PREN was established by statistical analysis of a public pitting potential data set. Statistical pitfalls were identified and properly addressed by multiple imputation and principles from survival analysis, such as censoring and mixed effects. This statistical framework allowed for simultaneous inclusion of surface pretreatment and test environment next to alloy composition in an updated PREN. Comparison of Weibull and non-parametric baseline hazard functions indicate that pitting potentials might not be Weibull distributed.

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.