Al coatings sputtered on 316L stainless steel was heat treated with different processes. The phase, microstructure and properties were characterized by XRD, EDS, SEM, scratch adhesion test and thermal shock resistance test, respectively. The results show that the heat treated Al coating is divided into three layers, and the intermediate layer is FeAl which shows gradient character. After heat treatment, the bonding strength is enhanced, and it is increased with the decrease of the thickness difference between the FeAl layer and Al layer. The th...
