Fingerprints are less noticeable , color titanium products with excellentwith resistance

摘要

PROBLEM TO BE SOLVED: To provide a colored titanium product which makes a finger print hardly conspicuous or be easily removed by wiping, even if the finger print has adhered thereon, and is superior in scratch resistance and designability.;SOLUTION: The colored titanium product, which makes the finger print hardly conspicuous, is hard to form a scratch thereon and has superior designability, has recess portions uniformly formed on the surface, of which the surfaces have been color-developed by an anodic oxidation method or the like, and which have sizes corresponding to the average diameter of 20-150 μm and the depth of 3-30 μm; has gently flat parts in ridge parts between the adjacent recess portions, of which the surface roughness Ra is 0.1-1.5 μm and of which the area rate is 10-60% of the whole area; and also has the maximum hardness by Vickers hardness (Hv 0.02) at the depth of 50 μm from the outermost surface, which is 40-150 points higher than that of the base material. As for the product, the finger print is hard to be outstanding, or can be easily wiped off even though surface treatment such as clear painting is not applied to the product, and the product is superior in scratch resistance and designability as well because the color is developed by the anodic oxidation.;COPYRIGHT: (C)2011,JPO&INPIT