Oxidation-resistant rose gold plating and preparation process thereof

Abstract

The invention discloses rose gold plating and a preparation process thereof. The rose gold plating comprises a metal matrix, the metal matrix is made of stainless steel, and the surface of the metal matrix is a rose gold plating body, wherein the rose gold plating body comprises 12-20wt% of Cu, 5-15wt% of Pd, 0.5-0.7wt% of Er, 0.1-0.2wt% of Nd and the balance Au. According to the rose gold plating, the Pd, the Er and the Nd are added, so that the rose gold plating has good oxidation resistance, and the color of rose gold cannot be changed after the rose gold is used for a long time; and the preparation process is simple and rapid, the hurt to operators and the damage to the environment caused by a conventional electroplating process are reduced, and great convenience is brought to electroplating operation.

Description

Technical field [0001] The invention belongs to metal surface treatment technology, and particularly relates to an oxidation-resistant rose gold coating and a preparation process thereof. Background technique [0002] Rose gold is a metal alloy material used to produce jewelry, which usually contains precious metals such as gold, silver and copper. At present, in the market, watches and jewelry with rose gold surfaces are becoming more and more popular, so various manufacturers have launched products with rose gold surfaces. [0003] However, the silver, copper and other metals contained in rose gold are easy to oxidize, which makes rose gold easy to discolor. How to delay or even prevent rose gold from discoloration is a technical problem. [0004] In addition, conventional electroplating products immerse the metal parts in the electroplating solution, and use the principle of electrolysis to coat the conductor with a layer of electroplating. Although it can meet people's needs to...

AI Technical Summary

Problems solved by technology

Although it can meet people's needs to a certain extent, there are also some shortcomings: First, a large amount of electroplating wastewater containing strong acid, strong alkali, and heavy metal chromium will be produced in the conventional electroplating process, which is very harmful to workers and easy to pollute Surface water and groundwater are heavily polluting industries; Second, conventional electroplating can easily lead to uneven coating thickness and affect the appearance effect

On the other hand, the vacuum-plated rose gold coating is easy to change color and needs passivation treatment. Now the passivation treatment is generally dipped in potassium dichromate solution. Potassium dichromate solution pollutes the environment and is not suitable for large-scale use.