| 摘要 |
The present invention concerns a vapor phase process for the deposition of at least one protective metal coating on a metal piece. The coating is aluminum, chromium, titanium, or a derivative of these metals or alloys or mixtures. The coating is effected by the reaction of the surface of the metal piece, suitably heated in an enclosure, with a halide compound of the coating metal which is formed by the reaction, in the enclosure, between a chemical halide compound with a donor. The donor consists of the coating metal or an alloy formed in a thin sheet, the surface area being of the same order of magnitude as that of the piece to be coated, located so that the surface area faces the metal piece. |
