Patent ID: 9080235
Filing Date: 2015-07-14
Classification: C23C

Abstract:
1. A method for diffusion surface alloying of ferrocarbon workpieces with chromium, comprising: (1) providing a composition consisting essentially of, by weight: (2) exposing a first workpiece to the composition; (3) heating the first workpiece and the composition for sufficient time and temperature to form a chromium containing diffusion layer on the surface of the workpiece; (4) cooling and removing the first workpiece from the remaining portion of the composition; (5) providing a corrected composition consisting essentially of, by weight: (6) exposing a second workpiece to the corrected composition; (7) heating the second workpiece and the corrected composition for sufficient time and temperature to form a chromium containing diffusion layer on the surface of the second workpiece; and (8) cooling and removing the second workpiece from the remaining portion of the corrected composition.