Gold Plating

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Gold Plating


the process of applying layers of gold (from tenths of a micron to two or three microns thick; up to 20–25 μm in certain critical circumstances) to the surfaces of articles, designs, and architectural structures.

The so-called sheet method of gold plating was used in ancient Egypt. It involved sticking from one to three layers of the finest petals of gold onto the prepared surface of an article. The method was used widely in Kievan Rus’ beginning with the tenth and 11th centuries A.D. By the 19th century the iron or copper cupolas of churches and the roofs and spires of palaces were gilded by this method. The lifetime of such sheet gold coverings was about 50 years. Later, the firing method came into use. Here, a dough-like paste consisting of an amalgam of gold (a compound of gold and mercury) was applied to a surface. When the article (made of porcelain or metal) was heated, the mercury vaporized and a compact gold covering remained. Such coverings last 100 to 150 years. The galvanic method has been used since the middle of the 19th century. Here, the gold is precipitated onto the surface from a solution of dicyanoaurate KAu(CN)2. Such a covering is very stable chemically, possesses high thermal and electrical conductivity, and is used not only in jewelry and watch-making, but also in the electronics industry—mainly to cover the electrical contacts of electronic computers. The galvanic method is used not only for gold plating but also for coatings made of compounds of gold with silver, antimony, nickel, cobalt, copper, and other elements. Such coatings approximately double the hardness of a surface and are a good means of protecting surfaces against corrosion.


References in periodicals archive ?
That's why we have decided to offer high quality gold plating at an affordable price.
With the absence in all of the high streets of Britain of the unique gifts that are created with one of their Gold Plating kits, young buyers can discover that life really is not as bad as it must appear at the moment for them.
As a substitute for gold plating solution that is currently widely used in mass production, precious metals costs can be reduced by approximately 90% and abrasion resistance can be greatly improved due to hardness being increased up to 6 times.
Abdul-Razaq al-Fattal, who supervises gold plating of in the city of Samara, 110 kilometers (about 68 miles) north of Baghdad, said they are now covering the walls of buildings and rooms with green marble.
Stu Hughes and wife Katherine's Goldstriker company is famous for gold plating almost anything, from a mobile phone to his and hers X-Type and S-Type Jaguar cars.
Similar gold plating services and gold plating kits, according to Yang, have been known to damage the Apple Watch.
The purpose of this programme is to give an opportunity for up to 10 people in the UK the chance to start their own Gold Plating business, working from home, with one of their specialized De-Luxe Gold Plating kits supplied free of charge.
Rehabilitation should wear gold plating specialized labor.
The court felt that gold plating would damage the inscriptions and images of gods and goddesses on the temple walls which have been there since the Vijayanagara period.
But he eventually built his own bike 19 years later, after discovering an American company selling gold plating kits.
IC Interconnect provides wafer bumping services and electroless nickel and immersion gold plating and pad resurfacing for semiconductor devices.
The gold plating is thicker than that offered through any other process -- and comes with a full two-year warranty guaranteeing customer satisfaction.