摘要:
A process for improving the wear resistance and enhancing the black color of a black or blue rhodium-plated article is disclosed. In this process the rhodium-plated article is subject to anodic electrolysis, said electrolysis being carried out in a bath comprising one or more selected ingredients with a direct current of a current density of 0.004 to 20 A/dm 2 and a bath temperature of 20 to 60°C for 3 to 60 minutes.
摘要:
A process for improving the wear resistance and enhancing the black color of a black or blue rhodium-plated article is disclosed. In this process the rhodium-plated article is subject to anodic electrolysis, said electrolysis being carried out in a bath comprising one or more selected ingredients with a direct current of a current density of 0.004 to 20 A/dm 2 and a bath temperature of 20 to 60°C for 3 to 60 minutes.
摘要:
A tin or tin alloy plated article, particularly a film carrier which is protected against the generation of tin whiskers characterized in having an indium plated layer on the subsrtrate thereof and a tin or tin alloy plated layer on said indium plated layer. There are also disclosed a coating process therefor as well as a novel and unique electroless indium plating bath therefor, said indium plating bath is an acidic, electroless plating bath characterized by including an indium salt and thiourea or a derivative thereof.