Method of surface treatment for metal glass part, and metal glass part with its surface treated by the method

A surface treatment method for a metallic glass component that is Zr based, Ti based, Cu based, Ni based or Fe based, comprising:

• removing an oxide film on a surface of the metallic glass component and providing an anchor bond shape in an atomic level on the surface of the metallic glass component by surface active treatment with a mixed aqueous solution of nitric acid and hydrofluoric acid, prepared such that a volumetric ratio of the nitric acid to the hydrofluoric acid is in a range of 2 to 5 and a concentration of the mixed aqueous solution of nitric acid and hydrofluoric acid is 1 to 10% in a volumetric ratio;
• and
• forming a plating film on the surface of the metallic glass component by electroplating or electroless plating;
• wherein, the surface active treatment is performed with the mixed aqueous solution at a temperature in the range of not lower than 10 degrees C. and not higher than 40 degrees C. in the reaction time in the range of five minutes to 24 hours.