Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A process for producing a surface-coated blade member for cutting tools, comprising the steps of: (a) preparing cermet substrate, said cermet substrate containing 70 to 95% carbo-nitride by weight as a hard phase-constituting component, said cermet substrate having the formula (Ti x M y )(C u N v ), wherein M is at least one metal selected from the group consisting of metals in groups IV A ,V A and VI A of the Periodic Table except for titanium, and wherein x, y, u and v are molar ratios, and 0.5≦x≦0.95, 0.05≦y≦0.5, 0.2≦u≦0.8, 0.2≦v≦:0.8, x+y=1 and u+v=1, and said cermet substrate containing a binder component of one or two metals selected from the group of cobalt and nickel; and, (b) forming at least one layer of titanium, carbo-nitride by a chemical vapor deposition process on said cermet substrate, said chemical vapor deposition process conducted in a temperature range of 700 to 900°C, and said chemical vapor deposition process using a reaction gas containing acetonitrile.
Claim 2
Dependent Claim
20 words
A process according to claim 1, wherein said reaction gas is a mixture of titanium tetrachloride, acetonitrile and hydrogen gasses.
Claim 3
Dependent Claim
18 words
A process according to claim 1, wherein said layer has an average thickness of 0.5 to 20 µm.
Claim 4
Dependent Claim
184 words
A process for producing a surface-coated blade member for cutting tools, comprising the steps of: (a) preparing cermet substrate, said cermet substrate containing 70 to 95% carbo-nitride by weight as a hard phase-constituting component, said cermet substrate having the formula (Ti x M y )(C u N v ), wherein M is at least one metal selected from the group consisting of metals in groups IV A ,V A and VI A of the Periodic Table except for titanium, and wherein x, y, u and v are molar ratios, and 0.5≦x≦0.95, 0.05≦y≦0.5, 0.2≦u≦0.8, 0.2≦v≦0.8, x+y=1 and u+v=1, and said cermet substrate containing a binder component of one or two metals selected from the group of cobalt and nickel; and, (b) forming a layer of titanium nitride by a chemical vapor deposition process on said cermet substrate; and, (c) forming at least one layer of titanium carbo-nitride by a chemical vapor deposition process on said layer of titanium nitride, said chemical vapor deposition process conducted in a temperature range of 700 to 900°C, and said chemical vapor deposition process using a reaction gas containing acetonitrile.
Claim 5
Dependent Claim
21 words
A process according claim 4, wherein said layer of titanium nitride has an average thickness of no greater than 4 µm.