Patent ID: 8871037
Filing Date: 2014-10-28
Classification: C23C,Y10T

Abstract:
1. A method of carrying out a diffusion treatment for a coating of a steel engineering part to increase resistance to marine climate, comprising: first step, pre-treating the part; second step, preheating the part in a furnace in a protective atmosphere; third step, submerging and turning the preheated part in a plating solution for 1-5 minutes, wherein said plating solution comprises in mass percentages: fourth step, subjecting the plated part to a diffusion treatment in a vacuum furnace at a temperature of 800-950° C. for 1-3 hours, then reducing the temperature gradually, followed by taking out the diffusion treated part, thereby forming a diffusion layer on a substrate of the part, through diffusion of atoms at an interface to achieve a metallurgical combination between the coating and the substrate.