Some articles on gold, layer, gold layer:
... Gold plating is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards ... With direct gold-on-copper plating, the copper atoms tend to diffuse through the gold layer, causing tarnishing of its surface and formation of an oxide and/or sulfide layer ... A layer of a suitable barrier metal, usually nickel, is often deposited on the copper substrate before the gold plating ...
... Gold-filled jewelry, also known as "rolled gold" or "rolled gold plate" is composed of a solid layer of gold bonded with heat and pressure to a base metal such as brass ... Some high quality gold-filled pieces have the same appearance as 14 karat (58%) gold ... In the USA the quality of gold filled is defined by the Federal Trade Commission ...
Famous quotes containing the words layer and/or gold:
“This world is run by people who know how to do things. They know how things work. They are equipped. Up there, theres a layer of people who run everything. But wewere just peasants. We dont understand whats going on, and we cant do anything.”
—Doris Lessing (b. 1919)
“Burning hot is the ground, liquid gold is the air;
Whoever looks round sees Eternity there.”
—John Clare (17931864)