Preparation and Performance Evaluation of High-temperature Formic Acid Corrosion Coatings on HT250 Cast iron Surface
Abstract
The purpose of this study was to investigate the preparation and performance evaluation of high-temperature formic acid corrosion coating on the surface of HT250 cast iron. First, the basic characteristics of HT250 cast iron and formic acid are introduced, and the corrosion mechanism in high temperature formic acid environment is expounded. Secondly, the classifi cation, application and preparation of high temperature coating technology are summarized. Then, the preparation method of HT250 cast iron surface coating is discussed in detail, including surface treatment technology, selection and preparation of coating materials and optimization of process parameters. Then, how to evaluate the performance of the coating was discussed through the high temperature resistance test, formic acid corrosion test, microstructure and surface topography analysis.
Keywords
HT250 cast iron; High temperature coating; Formic acid corrosion, High temperature resistance; Coating preparation; Performance evaluation
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DOI: http://dx.doi.org/10.18686/ahe.v7i35.12564
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