热处理镍钨合金涂层的耐腐蚀性。

Corrosion Resistance of Heat-Treated Ni-W Alloy Coatings.

作者信息

Popczyk Magdalena, Kubisztal Julian, Swinarew Andrzej Szymon, Waśkiewicz Zbigniew, Stanula Arkadiusz, Knechtle Beat

机构信息

Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, Poland.

Institute of Sport Science, The Jerzy Kukuczka Academy of Physical Education, 40-065 Katowice, Poland.

出版信息

Materials (Basel). 2020 Mar 6;13(5):1172. doi: 10.3390/ma13051172.

DOI:10.3390/ma13051172

PMID:32155698

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7085042/

Abstract

The paper presents research on evaluation of corrosion resistance of Ni-W alloy coatings subjected to heat treatment. The corrosion resistance was tested in 5% NaCl solution by the use of potentiodynamic polarization technique and electrochemical impedance spectroscopy. Characteristics of the Ni-W coatings after heat treatment were carried out using scanning electron microscopy, scanning Kelvin probe technique and X-ray diffraction. Suggested reasons for the improvement of properties of the heat treated Ni-W coating, obtained at the lowest current density value (125 mA∙cm), are the highest tungsten content (c.a. 25 at.%) as well as the smallest and the most homogeneous electrochemically active surface area.

摘要

本文介绍了对经过热处理的镍钨合金涂层耐腐蚀性能的评估研究。采用动电位极化技术和电化学阻抗谱在5%氯化钠溶液中测试了其耐腐蚀性能。利用扫描电子显微镜、扫描开尔文探针技术和X射线衍射对热处理后的镍钨涂层特性进行了研究。在最低电流密度值（125 mA∙cm）下获得的热处理镍钨涂层性能改善的推测原因是钨含量最高（约25 at.%）以及电化学活性表面积最小且最均匀。