Patent ID: 6638571
Filing Date: 2003-10-28
Classification: C23C,Y10T

Abstract:
A process for producing a coated carbide member, comprising:depositing a TiCN layer with a reactive gas on a substrate, said layer having a lower portion and an upper portion; and during said depositing, changing a concentration in said reactive gas of at least one selected from the group consisting of CH3CN, CH4, N2, and mixtures thereof; wherein said depositing of said lower portion is carried out at a deposition temperature of 850-950Â° C., and said depositing of said upper portion is carried out at a deposition temperature of 960-1040Â° C., wherein the composition of said TiCN layer is TiC1âˆ’xNx, wherein the x value at said upper portion is in the range of 0.45 to 0.95 and the x value at said lower portion is in the range of 0.05 to 0.40.