Patent ID: 6793968
Filing Date: 2004-09-21
Classification: C23C,Y02T

Abstract:
A method of coating a product with a metallic anti-oxidation coating in one single vacuum plant, the plant including a coating chamber and a postheat treatment chamber separated from the coating chamber, wherein the postheat treatment chamber is connected to the coating chamber in a vacuum-tight manner, the method comprising:heating the product brought into the coating chamber and subjected to a vacuum from room temperature to a product temperature; applying the metallic anti-oxidation coating to the product being in a vacuum; transferring the coated product from the coating chamber to the postheat treatment chamber by a transfer system without interruption of the vacuum; subjecting the coated product to a postheat treatment in the postheat treatment chamber in a vacuum, wherein the postheat treatment follows the application of the coating in such a way that the temperature of the product, after the application of the coating and before the postheat treatment, is at least equal to a minimum temperature, the minimum temperature being higher than room temperatures; and transferring the coated product from the vacuum plant.