一种在不锈钢上形成由聚合物衍生陶瓷、氧化物和耐火陶瓷组成的用于防止熔融铝合金侵蚀的防护涂层的简单方法。

A Simple Method for a Protective Coating on Stainless Steel against Molten Aluminum Alloy Comprising Polymer-Derived Ceramics, Oxides and Refractory Ceramics.

作者信息

Quenard Sébastien, Roumanie Marilyne

机构信息

CEA, LITEN, Université Grenoble Alpes, 17 Rue des Martyrs, F-38054 Grenoble, France.

出版信息

Materials (Basel). 2021 Mar 19;14(6):1519. doi: 10.3390/ma14061519.

DOI:10.3390/ma14061519

PMID:33808939

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8003667/

Abstract

A new coating based on polymer-derived ceramics (PDC), oxides and refractory ceramic with a thickness of around 50 µm has been developed to improve the resistance corrosion of stainless steel substrate against molten aluminum alloy in a thermal energy storage (TES) system designed to run at high temperature (up to 600 °C). These coatings implemented by straightforward methods, like tape casting or paintbrush, were coated on planar and cylindrical stainless-steel substrates, pyrolyzed at 700 °C before being plunged for 600 and 1200 h in molten AlSi at 700 °C. The stainless-steel substrate appears healthy without intermetallic compounds, characteristic of molten aluminum alloy corrosion. The protective coating against AlSi corrosion shows excellent performance and appears interesting for TES applications.

摘要

一种基于聚合物衍生陶瓷（PDC）、氧化物和耐火陶瓷的新型涂层已被开发出来，其厚度约为50微米，用于在设计运行温度高达600°C的热能存储（TES）系统中提高不锈钢基体对熔融铝合金的耐腐蚀性能。这些通过胶带流延或画笔等简单方法实施的涂层，被涂覆在平面和圆柱形不锈钢基体上，在700°C下热解，然后在700°C的熔融AlSi中浸泡600和1200小时。不锈钢基体看起来完好无损，没有出现熔融铝合金腐蚀特有的金属间化合物。这种抗AlSi腐蚀的保护涂层表现出优异的性能，对于TES应用来说很有吸引力。