Patent ID: 8900540
Filing Date: 2014-12-02
Classification: B22F,C01B,D06M

Abstract:
1. A surface oxidation treatment method comprising the steps of: supplying an inert gas to an ozone-fluorine based solvent mixed solution having an ozone concentration of 120 to 500 mg/L and then deaerating the ozone-fluorine based solvent mixed solution to form an ozone-containing inert gas; removing by condensing the fluorine-based solvent from the ozone-containing inert gas; and bringing the ozone-containing inert gas, in which the fluorine-based solvent has been removed, into contact with a substance to be treated made of a combustible substance in a vapor phase, wherein a boiling point of the fluorine-based solvent is within a range from 178° C. to 200° C.