| 摘要 |
PURPOSE: A composition for metal surface treatment and a surface treating method using the same are provided to improve anti-rust and high-temperature lubricity by coating the surface of metal material such as magnesium ally and aluminum alloy with the composition having high anti-rust and lubricity. CONSTITUTION: A composition for metal surface treatment comprises phosphate compound and inorganic compound. The inorganic compound is selected from a group consisting of cerous compounds, vanadium compounds, fluorid compounds, and zirconium compounds. The phosphate compound is selected from a group consisting of polyphosphoric acid, phosphoric acid, zinc phosphate, manganese phosphate, phosphoric acid derivative, and hypophosphoric acid. The cerous compound is trivalent cerous compound, tetravalent cerous compound, or mixtures thereof.
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