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首页> 外文期刊>Journal of Materials Engineering and Performance >Pitting Corrosion Characterization of Wrought Stellite Alloys in Green Death Solution with Immersion Test and Extreme Value Analysis Model
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Pitting Corrosion Characterization of Wrought Stellite Alloys in Green Death Solution with Immersion Test and Extreme Value Analysis Model

机译：浸渍试验和极值分析模型在绿色死亡溶液中变形司太立合金的点蚀特性

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摘要

This article presents a study of the corrosion behavior of two wrought Stellite alloys, Stellite 6B, and Stellite 6K, in Green Death solution, utilizing the extreme value analysis (EVA) model, which is a statistics tool developed based on the Gumbel distribution. Green Death solution a typical oxidized testing solution used in industry for assessing the corrosion resistance of materials. The data of maximum pit depths are obtained from the immersion tests on these alloys for various exposure periods. The top ten maximum pit depths in each specimen surface after the immersion test are measured using a surface texture and contour measuring instrument. These data are the input parameters of the EVA model and the outcomes of the model are the extreme values (minimum thickness) required for the alloys under a given service condition. It is shown that Stellite 6K, which contains higher carbon content but smaller-size carbides, exhibits better corrosion resistance in regard to the extreme value. The results and mechanisms of Stellite 6B and Stellite 6K in Green Death solution corrosion are discussed.
机译：本文利用极限值分析（EVA）模型（基于Gumbel分布开发的统计工具），介绍了在绿色死亡解决方案中两种变形的Stellite合金Stellite 6B和Stellite 6K的腐蚀行为。 Green Death溶液是一种典型的氧化测试溶液，在工业中用于评估材料的耐腐蚀性。最大凹坑深度的数据是从这些合金在不同暴露时间下的浸没测试获得的。使用表面纹理和轮廓测量仪测量浸没测试后每个样品表面的前十个最大凹坑深度。这些数据是EVA模型的输入参数，模型的结果是在给定使用条件下合金所需的极值（最小厚度）。结果表明，含有较高碳含量但碳化物尺寸较小的Stellite 6K在极值方面表现出更好的耐腐蚀性。讨论了Stellite 6B和Stellite 6K在Green Death溶液腐蚀中的结果和机理。

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