The gilding method (gold impregnation) is the process of covering the surface of a metal with a thin layer of gold to give it additional properties, such as corrosion protection, increased wear resistance and decorativeness. This method is widely used in various industries - from jewelry to the automotive and aviation industries.
The essence of the gilding method is that a layer of gold is applied to the surface of the metal, which is then subjected to heat treatment to secure it to the surface. Gold penetrates the metal through specially created microcracks and pores on the surface, which allows you to create a very thin, uniform layer with high wear resistance and an attractive appearance. In this case, there is no change in the composition of the metal base.
To carry out the gilding method, special solutions based on nitric acid, as well as gold and silver are used, which are applied to the surface in the form of a mixture or separately. Once the solution is applied to the surface, the product is placed in a high temperature oven to achieve the required coating thickness. During heat treatment, gold penetrates into the metal molecules, filling microcracks and pores, forming a unique