used for plumbing parts and electrical cable Brass Non-ferrous metal that is gold coloured and darkens when oxidised with age An alloy of copper and zinc, can be cast and machined, used for ...

Currently, bismuth telluride (Bi 2 Te 3) alloy remains the only candidate material available for commercial PCs. Unfortunately, the layer-structured Bi 2 Te 3 is connected by van der Waals forces ...