Literature Search on Coatings Performance under Extreme Temperature Conditions

摘要

We recently conducted a literature seach of Corrosion Abstracts On-Line, and our own published papers. The results below show that there has been very little published data on the performance of coatings under extreme temperatures. Author Mathivanan, L; Arof A K. Anti-Corrosion Methods and Materials [Anti-Corros. Methods Mater.], vol.45, no.6, pp.403-412, 1998. To evaluate the degradation of silicone based coatings that protect the mild steel surfaces from corrosion in high temperature atmospheres, the coatings were exposed to muffle furnace for heating-cooling cycle (as per ASTM specification D 2485) up to 700 DGC. The ability of the paint film to withstand the temperature is related to its resistance and microcracks. These factors are very useful in precisely quantifying the degree of deterioration of the protective film. In the present work, two types of silicone based paints (silicone-titanate, Rhodorsil silicone) were prepared and the surface degradation of these coatings were studied by EIS technique and SEM with EDAX analysis. The chemical resistance properties were also analyzed.