Development of CWD process for surface treatment of magnesium

In order to develop a cyclic wet-dry (CWD)process as a new surface treatment method for improvingcorrosion resistance of Mg alloys, the composition of starting solutionthe process conditions and the corrosion resistance of reaction products已被examined.它是found that hydrotalcite ((mg_6al_2 (OH)_<16> co_3 / 4 h_2o))or hydrotalcite-like compounds can be formedwell-controlled CWD conditions using NaCl+ alcl_3 or na_2 so_4 + al_2 (so_4)_3 solutions and他们improves the corrosion resistance of Mg alloys。

In order to develop a cyclic wet-dry (CWD)process as a new surface treatment method for improving corrosion resistance of Mg alloys, the composition of starting solution, the process conditions and the corrosion resistance of reaction products have been examined. It was found that hydrotalcite ((Mg_6Al_2(OH)_<16> CO_3・4H_2O))or hydrotalcite-like compounds can be formed under well-controlled CWD conditions using NaCl+ AlCl_3 or Na_2SO_4+ Al_2(SO_4)_3 solutions and they improves the corrosion resistance of Mg alloys.