Performance of Magnesium Potassium Phosphate Cement-BasedAnticorrosive Coating with High Fluidity under Long-TermSoaking in Different Solutions

Abstract

Abstract: In order to explore the performance ofmagnesium potassium phosphate cement (MKPC)-based anticorrosive coating with high fluidity in different solution environments,the strength,dry shrinkage and water absorption of MKPC-based anticorrosive coating were tested by immersion in fresh water,5% sodium sulfate solution and 3.5% sodium chloride solution (both are mass fraction).In addition,the corrosion mechanism of MKPC-based anticorrosive coating under long-term soaking was analyzed by SEM-EDS and XRD.The results show that the high fluidity MKPC has good corrosion resistance in fresh water environment,and better corrosion resistance in 3.5% sodium chloride solution and 5% sodium sulfate solution.

Key words: magnesium potassium phosphate cement (MKPC), anticorrosive coating, water glass, water resistance, long-term soaking

CLC Number:

TQ172

HAN Chao, YANG Jianming, SHAN Chunming, WU Qing, HE Fuqiang. Performance of Magnesium Potassium Phosphate Cement-BasedAnticorrosive Coating with High Fluidity under Long-TermSoaking in Different Solutions[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 48-54.

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