The electrochemical behavior of electrolytic tinplates was studied and analyzed by means of electrochemical methods together with tin quantity test and scanning electron microscopy (SEM). The results indicated that the properties of the Sn-Fe alloy layer determined the electrochemical behavior of electrolytic tinplates. The electrolytic tinplate possessed higher corrosion resistance if the Sn-Fe alloy layer was thicker and more compact.
The cause of welding cracks in thermal sprayed water wall tubes was analyzed, the choice of nondestructive testing method was discussed, and a welding procedure for the water wall tube with thermal sprayed coatings was established successfully.
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