Experimental exploration of metallic chloride salt corrosion of stainless steel sheets

Abstract In recent years, biomass generation in China has been steadily increasing. The high-temperature corrosion of the heating surface boilers is mainly caused by HCl and alkali metal chlorides sediment, which seriously affects efficiency safety degree economic utilization energy. this paper, products were characterized total-immersion experiments under constant temperature on different thicknesses 304 stainless steel various concentrations types chloride salts. Through thermal microscopy scanning XRD experiments, composition, characteristics, microscopic morphology flakes are determined to find out mechanism solution results show that a water bath at 80 °C, weaken resistance stainless-steel sheet destroying integrity its reticular structure, thus promoting chemical reaction between iron contained other elements generate rich iron. Meanwhile, among salts, catalytic effect saturated CaCl 2 0.1 mm 0.01 sheets °C most significant.