BLACK PLATING FILM, ITS FORMING METHOD, AND ARTICLE HAVING PLATING FILM

摘要

PROBLEM TO BE SOLVED: To provide an electroless nickel black plating film having excellent color tone and wear resistance. SOLUTION: In an electroless nickel black plating film forming method, a plating film is formed by immersing an article to be plated for a predetermined time in an electroless nickel plating bath containing sulfur-containing compounds, the plating film is subjected to the blackening treatment, the black color of the plating film is maintained, and the plating film after maintaining the black color is heat-treated at the temperature in a range of 100-300°C. The electroless nickel black plating film has a diffraction peak at the Bragg angle 2θ= 46-49°in the X-ray diffraction spectrum. COPYRIGHT: (C)2007,JPO&INPIT