SUBSTRATE TREATED WITH COLOR DEVELOPMENT, AND SUBSTRATE COLOR DEVELOPMENT TREATMENT METHOD FOR SAME

摘要

A substrate treated with color development, according to the present invention is provided with areas on the surface having different temperatures to induce an average thickness difference in the coating, when a coating is formed on a matrix surface containing magnesium, thereby maintaining a metal texture unique to the substrate while enabling the development of several colors on the substrate surface with a single color development treatment, and thus can be useful in areas using magnesium materials, such as external materials for construction, vehicle interiors, and especially in the electrical and electronic parts material fields such as in mobile phone case parts.

主权项

1. A color-treated substrate, comprising: a matrix including magnesium; and a film formed on the matrix and containing a compound represented by the following Chemical Formula 1:
M(OH)m   [Chemical Formula 1] where M includes one or more selected from the group consisting of Na, K, Mg, Ca and Ba, and m is 1 or 2, wherein conditions of the following Expressions 1 and 2 are satisfied with respect to an arbitrary point A existing on the matrix:
ΔE1*<1.0   [Expression 1]ΔE2*>2.0   [Expression 2] where ΔE1,* represents a deviation of average color coordinates of a point A from average color coordinates of an arbitrary point B existing on the same axis, and ΔE2* represents a deviation of average color coordinates of a point A from average color coordinates of a point C which is present on a second axis having an average deviation of 75° to 105° from the first axis, is present on the same axis with the average color coordinates of the point A, and is spaced apart a distance of 3 cm or more from the point A.