EP0085240A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multiple coated cutting tool and method for producing same
Assignee: Carboloy Inc
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Filing: 1982-12-13
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Granted: —
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Expires: 2002-12-13
Abstract
Abstract An article of manufacture adapted for use as a cutting toot is provided with an aluminum oxide coated substrate having layers of TiN and/or TiC deposited thereon, whereby the beneficial characteristics of the TiN, TiC and Al 2 O 3 coatings are provided simultaneously for such cutting tool. The TiN/TiC outer layers are strongly bonded to the Al 2 O 3 layer by means of an intermediate TiO layer. The process for producing such insert is also disclosed.
Inventors
- 👤 Donald Elmer Graham
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
C; C23; C23C; C23C30/00; C23C30/005; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
68 words
An article of manufacture comprising: (i) a substrate having aluminium oxide on at least portions of the surface thereof,-said aluminium oxide forming a first surface; (ii) an intermediate layer of an oxide of titanium adjacent at least a portion of said first surface; and (iii) an outer layer of at least one titanium nitride, titanium carbide and titanium carbonitride adjacent at least a portion of said intermediate layer.
Claim 2
Dependent Claim
68 words
An article of manufacture comprising: (i) a substrate having aluminium oxide on at least portions of the surface thereof,-said aluminium oxide forming a first surface; (ii) an intermediate layer of an oxide of titanium adjacent at least a portion of said first surface; and (iii) an outer layer of at least one titanium nitride, titanium carbide and titanium carbonitride adjacent at least a portion of said intermediate layer.
Claim 3
Dependent Claim
19 words
An article as claimed in claim 1 wherein said substrate is a cemented carbide substrate coated with aluminium oxide.
Claim 4
Dependent Claim
16 words
An article as claimed in claim 1 wherein said substrate is an aluminium base solid ceramic.
Claim 5
Dependent Claim
17 words
An article as claimed in any one of the preceding claims wherein said intermediate layer contains TiO.
Claim 6
Dependent Claim
21 words
An article as claimed in claim 4 wherein said intermediate layer is less than or equal to 1 micron in thickness.
Claim 7
Dependent Claim
41 words
An article as claimed in any one of the preceding claims wherein said outer layer includes sub-layers of titanium nitride and titanium carbide, said titanium carbide sub-layer being disposed between and adjacent to said titanium nitride sub-layer and said intermediate layer.
Claim 8
Dependent Claim
77 words
A process for coating at least portions of a substrate having aluminium oxide on at least portions of the surface thereof with an outer layer of at least one of titanium carbide, titanium nitride and titanium carbonitride, comprising: depositing a layer of TiO 2 on said substrate adjacent said aluminium oxide; reducing at least a portion of said TiO 2 to TiO to form an intermediate layer; and depositing said outer layer adjacent to said intermediate layer.
Claim 9
Dependent Claim
77 words
A process for coating at least portions of a substrate having aluminium oxide on at least portions of the surface thereof with an outer layer of at least one of titanium carbide, titanium nitride and titanium carbonitride, comprising: depositing a layer of TiO 2 on said substrate adjacent said aluminium oxide; reducing at least a portion of said TiO 2 to TiO to form an intermediate layer; and depositing said outer layer adjacent to said intermediate layer.
Claim 10
Dependent Claim
65 words
A process as claimed in claim 7 wherein said step of depositing a layer of Ti0 2 includes heating said substrate at approximately 1050°C-1100°C, passing a gaseous mixture of hydrogen and titanium tetrachloride over the surface of the insert for 0 - 5 minutes, and introducing up to 15% by volume of CO 2 along with hydrogen and titanium tetrachloride for 1 - 35 minutes.
Claim 11
Dependent Claim
39 words
A process as claimed in claim 7 or claim 8 wherein the step of reducing includes passing only hydrogen and titanium tetrachloride over the surface of the substrate for up to 30 minutes at a temperature of about 1000°C.
Claim 12
Dependent Claim
34 words
A process as claimed in any one of claims 7 to 9 wherein the step of depositing includes passing nitrogen, hydrogen and titanium tetrachloride over the surface of the substrate to form titanium nitride.
Claim 13
Dependent Claim
34 words
A process as claimed in any one of claims 7 to 9 wherein the step of depositing includes passing methane, hydrogen and titanium tetrachloride over the surface of the substrate to produce titanium carbide.
Claim 14
Dependent Claim
36 words
A process as claimed in any one of claims 7 to 9 wherein the step of depositing includes passing nitrogen, methane, hydrogen and titanium tetrachloride over the surface of the substrate to thereby produce titanium carbonitride.
References Cited (Backward Citations)
No citation records indexed.
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