Formation of Porous Stainless Steel Surface by Al Electrodeposition and Dissolution in the Molten Salt and Sliding Properties

A porous surface layer was formed by Al electrodepositing and dissolving on the of stainless steel using molten salt. Furthermore, relationship between morphology alloy produced electrodeposition clarified. As a result, Fe aluminide with high concentration lowering potential. Then, in order to investigate dissolution behavior Al, anodic polarization curves electrodeposited sample untreated were measured. An increase anode current observed from around −1.2 V sample. On other hand, an −0.8 for Therefore, experiment performed at −0.9 V, where occurs SUS304 does not occur. The lower potential during electrodeposition, thicker higher porosity formed. result point analysis composition layer, it recognized be austenite phase having Cr than SUS304. It is considered that remains as dissolved diffuses temperature form layer. Thus, sliding characteristics evaluated. showed better