DIFFUSION COATING METHOD AND CHROMIUM COAT PRODUCED THEREWITH
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United States of America Patent
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Issued Date -
Jun 13, 2013
app pub date -
Dec 12, 2012
filing date -
Dec 20, 2011
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Abandoned
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Abstract
A method for producing a coating made of metal or a metal alloy on a substrate (1) using a diffusion process is disclosed, in which the substrate undergoes a heat treatment in an atmosphere (4), wherein the atmosphere includes at least one metal halide of the to-be-deposited metal or the metal alloy and wherein, in addition, the substrate is provided at least partially with a layer (2, 3), which includes at least one metal halide in solid and/or liquid form, which preferably has the same constituent parts as the metal halide of the atmosphere. Furthermore, the present invention relates to a chromium coat, which was produced in particular with the method according to the invention and has a chromium proportion of ≧30% by weight in a diffusion zone in the coated substrate.
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