COMPOSITION OF A PLASMA ELECTROLYSIS OXIDATION SOLUTION FOR CERAMIC-COATING THE SURFACE OF A MAGNESIUM ALLOY PRODUCT

摘要

The composition of a plasma electrolysis oxidation solution for ceramic-coating the surface of a magnesium alloy product according to the present invention is obtained by mixing a basic solution produced by adding 1~30% by weight of sodium hydroxide (NaOH), 1~10% by weight of zirconium potassium fluoride (K₂ZrF₆), 1~10% by weight of zirconyl chloride (ZrOCl₂), 1~5% by weight of spinel (MgAl₂O₄), 1~15% by weight of potassium ferricyanide (K₃[Fe(CN)₆]) and 1~20% by weight of disodium hydrogen phosphate (Na₂HPO₄) to 100% by weight of water with potassium hydroxide (KOH) and sodium tetra silicate (Na₂Si₄O₉ or Na₂O·4SiO₂), wherein 4~7g of potassium hydroxide and 2~9g of sodium tetra silicate is mixed with each liter of the basic solution.