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Metal Spraying

Metallic coating of building materials may be grouped under five heads : (1)Electrical deposition of spelter and nickelling, chiefly on iron sheets and on small structural members and accessories; (2) plating with thin sheets; (3) gilding or silvering; (4) painting with certain kinds of metals reduced to powder and held in suspension in a fatty or spirituous medium, as in aluminium painting, and the whole range of processes known as “ bronzing. ” A development of this last is (5) the spraying of metal powders or vapours.

Keywords: metals;coatings;spraying