通过热处理激光熔覆 NiCoCrAlY 涂层的微观结构、腐蚀磨损和电化学性质

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Engineering Materials Pub Date : 2024-11-14 DOI:10.1002/adem.202401663

Yiming Deng, Chenglong Yang, Dejun Kong

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引用次数: 0

摘要

在腐蚀磨损和电化学过程中，热处理对合金涂层具有积极的作用，其中加热温度是改善显微组织的关键因素。本文对激光熔覆NiCoCrAlY涂层进行热处理，研究了加热温度对涂层组织、腐蚀磨损和电化学性能的影响。结果表明：NiCoCrAlY涂层的平均摩擦系数和磨损率随加热温度的升高而降低，磨损机制主要为磨粒磨损、黏着磨损和点蚀；此外，随着加热温度的升高，NiCoCrAlY涂层的耐蚀性降低，这是由于高温下沿晶界析出相造成的。

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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Microstructure, Corrosive-Wear, and Electrochemical Properties of Laser Cladded NiCoCrAlY Coatings by Heat Treatment

Heat treatment plays a positive role in alloy coatings during the corrosive-wear and electrochemical process, in which the heating temperature is a key factor in the improvement of microstructure. In this work, the laser-cladded NiCoCrAlY coating is processed by heat treatment, and the effects of heating temperature on the microstructure, corrosive-wear, and electrochemical properties of obtained coatings are investigated. The results show that the average coefficients of friction and wear rates of NiCoCrAlY coatings are decreased with the increase of heating temperature, and the wear mechanism is mainly abrasive wear, adhesive wear, and pitting corrosion. Moreover, the corrosion resistance of NiCoCrAlY coatings is decreased with the increase of heating temperature, which is attributed to the precipitation of phases along the grain boundaries at high temperatures.

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来源期刊

Advanced Engineering Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

5.60%

发文量

544

审稿时长

1.7 months

期刊介绍： Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.