AZ31B PEO涂层的等效电路原位估算

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2023-01-02 DOI:10.1080/02670844.2023.2194501

S. Wang, Y. Liu, H. Liu, Y. Lan

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引用次数: 0

摘要

摘要本文讨论了等离子体电解氧化（PEO）过程中使用等效电路的涂层原位估算方法。根据脉冲双极PEO处理过程中记录的瞬态负载波形和电弧图像，可以提出二阶非线性结构的等效电路。根据基尔霍夫定律和拉普拉斯变换规则导出了模型线性部分的传递函数；利用拟合理论对模型的非线性部分进行了拟合。然后推导了等效电路中各单元值的计算方法。涂层性能表征结果表明，等效电路对不同元素值的变化可以反映涂层厚度、涂层密度和放电强度的变化。综合分析了几种元素的含量与涂层微观结构的关系；提供了涂层耐腐蚀性的预测方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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In-situ estimate of coating by equivalent circuit for PEO of AZ31B

ABSTRACT The paper discusses an in-situ estimated methodology of coating using the equivalent circuit for the plasma electrolytic oxidation (PEO) process. An equivalent circuit of the second-order nonlinear structure can be proposed from the transient load waveform and the arc image recorded during pulsed bipolar PEO treatment. The transfer function of the linear part of the model was derived from Kirchhoff's law and Laplace's transformation rule; the nonlinear part of the model was fitted using Fitting Theory. Then the calculation method of each element value was derived in the equivalent circuit. The characterisation results of the coating properties show that the changes of different element values by the equivalent circuit can reflect the changes in coating thickness, coating density and discharge intensity. The relationship between the values of several elements and the microstructure of the coating is analysed comprehensively; a prediction method for the corrosion resistance of the coating is provided.

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.