Improving Corrosion Resistance of Friction Stir Welding Joint of 7075 Aluminum Alloy by Micro-arc Oxidation
Yue Yang
, Leilei Zhou
Fig. 4 3D images of MAO coatings formed on the welds in electrolyte with different Na2SiO3 concentrations: a 10 gL; b 15 gL; c 20 gL.