17-4 PH钢电镀硬铬层摩擦学及腐蚀性能研究

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

Surface Engineering Pub Date : 2023-05-04 DOI:10.1080/02670844.2023.2247862

Saroj Kumar Ghosh, P. K. Limaye, C. Srivastava, A. K. Sahu

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引用次数: 0

摘要

电镀硬cr涂层17-4 PH不锈钢经常用于核反应堆燃料处理系统的各个部件。在本研究中，使用显微划痕测试仪和球压痕对涂覆铬样品的涂层附着力进行了详细的研究。在与SS 440C球对位体的往复球对板干滑动几何条件下，对Cr涂层进行了摩擦学研究。在5种不同载荷条件(3、5、7、9和11 N)和3种不同滑动频率(5、10和15 Hz)下进行了磨损和摩擦系数(COF)试验。利用FESEM和三维光学轮廓仪对铬涂层的磨损痕迹进行了详细的检测，以了解其磨损机理。结果表明，超过7 N临界载荷后，涂层易发生剧烈磨损。在3.5 wt% NaCl溶液中，用动电位法测定了涂层的腐蚀速率。

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Investigation of tribological and corrosion performance of electroplated hard chromium coating on 17-4 PH steel

ABSTRACT Electroplated hard Cr-coated 17-4 PH stainless steel is regularly used in various parts of fuel handling system of nuclear reactors. In this study, the Cr-coated samples were investigated in detail for the coating adhesion using micro-scratch tester and ball indentation. Tribological investigation of the Cr coating was done in a reciprocating ball-on-plate dry sliding geometry against SS 440C ball counterbody. The wear and coefficient of friction (COF) tests were performed under five different loading conditions (3, 5, 7, 9 and 11 N) and three different sliding frequencies (5, 10 and 15 Hz). Wear scars on chromium coating were examined in detail by FESEM and 3D optical profilometer to understand the wear mechanism. It was observed that beyond 7 N critical load, the coating was prone to wear out drastically. Corrosion rate of the coating was estimated in 3.5 wt% NaCl solution by potentiodynamic experiment.

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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.