Coating underlayers

Details Coating underlayers Coating underlayers

Category

B - Operations, Transporting

Subcategory

32

Subsubcategory

B

CPC

117/158, 57/2

IPC codes

B32B 33/00 (2006.01) B24D 3/16 (2006.01) B32B 7/02 (2006.01) B32B 9/00 (2006.01)

Type

Patent

Patent number

CA 1153640

Description

60MP-1047 ABSTRACT OF THE DISCLOSURE A new and improved coated cemented carbide includes a cemented carbide substrate, an interlayer disposed on the substrate, and a coating of hafnium carbonitride and/or zirconium carbonitride which is firmly and adherently bonded to the substrate and interlayer, the coating having a specific carbon-to-nitrogen ration. Where the coating is hafnium carbonitride the interlayer is to be selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride - titanium carbide combination, the titanium nitride - titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlaying the layer of titanium nitride. Where the coating is zirconium carbonitride the inter- layer is selected from the group of zirconium nitride, titanium carbide and hafnium carbide.

Application Number

363792

Affiliated with

Also associated with

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