MANUFACTURING METHOD OF TITANIUM ALLOY HAVING HIGH SURFACE AREA BY ANODIC OXIDATION SURFACE REFORMING

摘要

The present invention provides a method for manufacturing titanium alloy having a high specific surface area by anodic oxidation surface modification, capable of improving hardness, rigidity, and corrosion resistance by obtaining a highly specific surface area by performing anodic oxidation surface modification after performing preprocessing in a sandblasting method. According to the present invention, the method for manufacturing a titanium alloy having a highly specific surface area by anodic oxidation surface modification includes: a step (a) of die-casting and forming a base material containing 5-7 wt% of carbon (C), 2-5 wt% of aluminum (Al), 0.01-3.0 wt% of silicon (Si), 2-5 wt% of sodium (Na), 0.01-0.5 wt% of calcium (Ca), 40-60 wt% of oxygen (O), 0.1-3.0 wt% of vanadium (V), and residues containing titanium (Ti); a step (b) of preprocessing the surface of the formed base material by sandblasting; and a step (c) of forming an anodic oxidation film coated to cover the outer surface of the base material by performing surface modification on the anodic oxidation by current density of 1.0-3.0 A/dm_2 after immersing the preprocessed base material in an electrolyte while being arranged on both poles.