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AssigneeJcu Corporation
InventorsYuto MORIKAWA, Masao HORI, Madoka NAKAGAMI
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A trivalent chromium plating solution that does not cause the problems including the occurrence of deposition failure of the plating and color unevenness, such as a brown stripe pattern, in the plating even though a metal impurity is incorporated into the plating solution, and a trivalent chromium plating method are provided by a trivalent chromium plating solution containing a trivalent chromium compound, a chloride as a conductive salt, a pH buffering agent, and a complexing agent, further containing an unsaturated sulfonic acid compound represented by the following general formula (1) (wherein in the formula (1), R1 represents a hydrocarbon group having a number of carbon atoms of from 1 to 10, hydrogen, or a halogen; R2 represents nothing or a hydrocarbon group having a number of carbon atoms of from 1 to 10; and X represents hydrogen or an alkali metal), and a trivalent chromium plating method using the same. R1—CH═CH—R2—SO3X (1)
A trivalent chromium plating solution, comprising:
A method for enhancing resistance of a trivalent chromium plating solution against metal impurities contained in the trivalent chromium plating solution, the method comprising:
A method for preventing burnt deposit in a high current density in plating with a trivalent chromium plating solution, the method comprising:
Dependencies are inferred from the claim text.