US5116430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for surface treatment titanium-containing metallic material
Assignee: Nihon Parkerizing Co Ltd
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Filing: 1991-02-08
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Granted: 1992-05-26
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Expires: 2011-02-08
Abstract
Abstract A titanium-containing metallic material having a high heat-resistant and abrasion resistant surface is produced by (A) cleaning a titanium-containing metallic material, (B) first plating the cleaned surface of the metallic material with Cu or Ni by a strike or flash plating method, (C) second plating the first plated surface of the Ti-containing material with Ni, Ni-P alloy or a composite material comprising a Ni-P alloy matrix and fine ceramic particles dispersed in the matrix by an electroplating method, (D) non-oxidatively heat treating the second plated Ti-containing material at 450° C. or more for one hour or more, (E) surface activating the second plated surface of the Ti-containing material, (F) coating the activated surface of the Ti-containing material with a heat and abrasion resistant coating layer comprising a matrix consisting of a Ni-P alloy or cobalt and fine ceramic particles dispersed in the matrix, and optionally, (G) surface-roughening the heat and abrasion-resistant coating layer surface of the Ti-containing material to a R Z of 1.0 to 10.0 μm, and (H) coating the roughened surface of the Ti-containing material with a solid lubricant coating layer comprising at least one member selected from MoS 2 , graphite, boron nitride and F-containing polymer resin.
Inventors
- 👤 Eiji Hirai
- 👤 Kazuyoshi Kurosawa
- 👤 Yoshio Matsumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
C; C25; C25D; C25D15/00; C25D15/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
224 words
A process for surface treating a titanium-containing metallic material, comprising the steps of: (A) cleaning a surface of a titanium-containing metallic material; (B) first plating the resultant cleaned surface of the titanium-containing metallic material with a member selected from the group consisting of copper and nickel to a thickness of 1 to 6 μm by a strike plating method or to a thickness of 0.1 to 5 μm by a flash plating method; (C) second plating the resultant first surface of the titanium-containing metallic material with a member selected from the group consisting of nickel, nickel-phosphorus alloys and composite materials comprising a matrix consisting of a nickel-phosphorous alloy and a number of fine ceramic particles dispersed in the matrix, to a thickness of 5 to 30 μm by an electro-plating method; (D) non-oxidatively heat-treating the resultant second plated titanium-containing metallic material at a temperature of 450° C. or more for one hour or more; (E) surface-activating the resultant surface of the non-oxidatively heat-treated titanium-containing metallic material; and (F) coating the resultant surface-activated surface of the titanium-containing metallic material with a heat-resistant and abrasion-resistant coating layer comprising a matrix comprising a member selected from the group consisting of nickel-phosphorus alloys and cobalt and a number of fine ceramic particles dispersed in the matrix to a thickness of 5 to 500 μm by an electroplating method.
Claim 2
Dependent Claim
224 words
A process for surface treating a titanium-containing metallic material, comprising the steps of: (A) cleaning a surface of a titanium-containing metallic material; (B) first plating the resultant cleaned surface of the titanium-containing metallic material with a member selected from the group consisting of copper and nickel to a thickness of 1 to 6 μm by a strike plating method or to a thickness of 0.1 to 5 μm by a flash plating method; (C) second plating the resultant first surface of the titanium-containing metallic material with a member selected from the group consisting of nickel, nickel-phosphorus alloys and composite materials comprising a matrix consisting of a nickel-phosphorous alloy and a number of fine ceramic particles dispersed in the matrix, to a thickness of 5 to 30 μm by an electro-plating method; (D) non-oxidatively heat-treating the resultant second plated titanium-containing metallic material at a temperature of 450° C. or more for one hour or more; (E) surface-activating the resultant surface of the non-oxidatively heat-treated titanium-containing metallic material; and (F) coating the resultant surface-activated surface of the titanium-containing metallic material with a heat-resistant and abrasion-resistant coating layer comprising a matrix comprising a member selected from the group consisting of nickel-phosphorus alloys and cobalt and a number of fine ceramic particles dispersed in the matrix to a thickness of 5 to 500 μm by an electroplating method.
Claim 3
Dependent Claim
50 words
The surface treating process as claimed in claim 1, wherein the fine ceramic particles employed in the second plating step comprise at least one member selected from the group consisting of SiC, Si 3 N 4 , BN, Al 2 O 3 , WC, ZrO 2 , diamond and CrB.
Claim 4
Dependent Claim
30 words
The surface treating process as claimed in claim 1, wherein the non-oxidative heat treating step is carried out under a vacuum pressure of from 10 -1 to 10 -5 Torr.
Claim 5
Dependent Claim
40 words
The surface treating process as claimed in claim 1, wherein the non-oxidative heat treating step is carried out in an inert or reductive gas atmosphere comprising at least one member selected from the group consisting of nitrogen, argon and hydrogen.
Claim 6
Dependent Claim
53 words
The surface treating process as claimed in claim 1, wherein the surface-activating step is carried out by bringing the surface of the non-oxidatively heat treated titanium-containing metallic material into contact with a surface-activating aqueous solution containing 3 to 10% by weight of hydrofluoric acid and 50 to 70% by weight of nitric acid.
Claim 7
Dependent Claim
51 words
The surface treating process as claimed in claim 1, wherein the fine ceramic particles in the heat-resistant and abrasion-resistant coating layer comprise at least one member selected from the group consisting of SiC, Si 3 N 4 , BN, Al 2 O 3 , WC, ZrB 2 , diamond and CrB.
Claim 8
Dependent Claim
25 words
The surface treating process as claimed in claim 1, wherein the fine ceramic particles have an average particle size of from 0.1 to 10.0 μm.
Claim 9
Dependent Claim
24 words
The surface treating process as claimed in claim 1, wherein the heat-resistant and abrasion-resistant coating layer has a thickness of 5 to 500 μm.
Claim 10
Dependent Claim
73 words
The surface treating process as claimed in claim 1, which further comprises the steps of: (G) surface-roughening the resultant surface of the heat-resistant and abrasion-resistant coating layer of the coated titanium-containing metallic material, and (H) coating the resultant roughened surface of the coated titanium-containing metallic material with a solid lubricant coating layer comprising at least one member selected from the group consisting of MoS 2 , graphite, boron nitride and fluorine-containing polymer resins.
Claim 11
Dependent Claim
22 words
The surface treating process as claimed in claim 1, wherein the titanium containing metallic material comprises one of titanium and titanium alloy.
Claim 12
Dependent Claim
31 words
The surface treating process as claimed in claim 4, wherein, int he inert or reductive gas atmosphere, the content of oxygen is restricted to a level not exceeding 1% by volume.
Claim 13
Dependent Claim
39 words
The surface treating process as claimed in claim 9, wherein the resultant surface roughened surface of the coated titanium-containing metallic material has a surface roughness (R Z ) of 1.0 to 10.0 μm determined in accordance with JIS B0601.
Claim 14
Dependent Claim
50 words
The surface treating process as claimed in claim 9, wherein the surface-roughening step is carried out by applying a sandblast treatment with alumina particles with a grid number of 120 to 270, to the surface of the heat resistant and abrasion resistant coating layer of the coated titanium-containing metallic material.
Claim 15
Dependent Claim
24 words
The surface treating process as claimed in claim 9, wherein the resultant solid lubricant coating layer has a thickness of 5 to 30 μm.
Claim 16
Dependent Claim
27 words
The surface treating process as claimed in claim 9, wherein the solid lubricant coating layer is cured at a temperature of from 150° C. to 250° C.
References Cited (Backward Citations)
US3887732A
Cited
US4371589A
Cited
US4857116A
Cited
DE3321231A1
Cited
US4588480A
Cited
US4761346A
Cited
US4820591A
Cited
US4863810A
Cited
US4902535A
Cited
US5009966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |