Patent US5589652A successfully refreshed from Google Patents.
US5589652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic-particle-dispersed metallic member, manufacturing method of same and use of same
Assignee: Hitachi Ltd
•
Filing: 1994-02-23
•
Granted: 1996-12-31
•
Expires: 2014-02-23
Abstract
Abstract In the metallic member of the invention, ceramic super fine particles, and solid lubricant particles or short size fibers are dispersed, and the grain size of the ceramic particles is smaller than the solid lubricant particle size or fiber diameter.
Inventors
- 👤 Toshiaki Arato
- 👤 Yasuhisa Aono
- 👤 Shigeo Tsuruoka
- 👤 Katsuhiro Komuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:48
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0085; F02F7/0087; C; C22; C22C; C22C1/00; C22C1/10; C22C1/1084; F16; F16D; F16D69/00; F16D69/02; F16D69/027; H; H01; H01H; H01H1/00; H01H1/02; H01H1/0203; B; B22; B22F; B22F2998/00; B22F2998/10; B22F2999/00; F05; F05C; F05C2253/00; F05C2253/16
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
67 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein the mean grain size of said ceramic super fine particles is not more than 200 nm, and the mean grain size of said solid lubricant particles or the mean diameter of said short size fibers is in the range of 0.25 to 10 μm.
Claim 2
Dependent Claim
67 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein the mean grain size of said ceramic super fine particles is not more than 200 nm, and the mean grain size of said solid lubricant particles or the mean diameter of said short size fibers is in the range of 0.25 to 10 μm.
Claim 3
Dependent Claim
78 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein the mean grain size of said ceramic super fine particles is not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic member.
Claim 4
Dependent Claim
78 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein the mean grain size of said ceramic super fine particles is not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic member.
Claim 5
Dependent Claim
90 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content not more than 1 wt % and the mean grain size not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer at 1 wt % is formed substantially over the entirety region of said metallic member.
Claim 6
Dependent Claim
90 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content not more than 1 wt % and the mean grain size not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer at 1 wt % is formed substantially over the entirety region of said metallic member.
Claim 7
Dependent Claim
86 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content not more than 1 wt % and the mean grain size not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic member.
Claim 8
Dependent Claim
86 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content not more than 1 wt % and the mean grain size not more than 200 nm, and a region where said ceramic super fine particles are dispersed in a matrix by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic member.
Claim 9
Dependent Claim
117 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content of not more than 1 wt % in a matrix and the mean grain size not more than 200 nm, and when a relationship between the content (wt %) and the mean particle spacing (nm) of said ceramic super fine particles is plotted in a logarithmic scale, said relation- ship is distributed within the rectangular region defined by straight lines interconnecting a point A (0.01%; 20 nm), a point B (0.01%; 500 nm), a point C (1.0%; 50 nm) and a point D (1.0%; 2 nm).
Claim 10
Dependent Claim
117 words
A ceramic-particle-dispersed metallic member in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed, wherein said ceramic super fine particles have the content of not more than 1 wt % in a matrix and the mean grain size not more than 200 nm, and when a relationship between the content (wt %) and the mean particle spacing (nm) of said ceramic super fine particles is plotted in a logarithmic scale, said relation- ship is distributed within the rectangular region defined by straight lines interconnecting a point A (0.01%; 20 nm), a point B (0.01%; 500 nm), a point C (1.0%; 50 nm) and a point D (1.0%; 2 nm).
Claim 11
Dependent Claim
21 words
A ceramic-particle-dispersed metallic member according to any one of claims 1 to 5, wherein said metallic member comprises a sintered material.
Claim 12
Dependent Claim
28 words
A ceramic-particle-dispersed metallic member according to any one of claims 1 to 5, wherein said metallic member comprises a member held in sliding contact with a mating number.
Claim 13
Dependent Claim
121 words
Ceramic-particle-dispersed composite metallic powder in which the ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are embedded in metallic powder, wherein said composite metallic powder contains the particles not less than 40 wt % of which grain size is not less than 60 μm and wherein said ceramic super fine particles have a mean grain size of not more than 200 nm and a region where said ceramic super fine particles are dispersed in the matrix of each particle of said composite metallic powder by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic powder sliding contact with a mating member.
Claim 14
Dependent Claim
121 words
Ceramic-particle-dispersed composite metallic powder in which the ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are embedded in metallic powder, wherein said composite metallic powder contains the particles not less than 40 wt % of which grain size is not less than 60 μm and wherein said ceramic super fine particles have a mean grain size of not more than 200 nm and a region where said ceramic super fine particles are dispersed in the matrix of each particle of said composite metallic powder by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said metallic powder sliding contact with a mating member.
Claim 15
Dependent Claim
19 words
A ceramic-particle-dispersed metallic member according to any one of claims 2 to 5, wherein said metallic member comprises powder.
Claim 16
Dependent Claim
43 words
A method of manufacturing a ceramic-particle-dispersed metallic member wherein said metallic powder in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are embedded, according to claim 9, is sintered at a high temperature under a pressure.
Claim 17
Dependent Claim
121 words
A compressor comprising a sliding member, a wobble plate fixed to a rotary shaft and a piston reciprocally moving through the sliding member with rotation of said wobble plate, wherein said sliding member is made of a copper base sintered alloy in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed and wherein said ceramic super fine particles have a mean grain size of not more than 200 nm and a region where said ceramic super fine particles are dispersed in a matrix of said copper base sintered alloy by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said member.
Claim 18
Dependent Claim
121 words
A compressor comprising a sliding member, a wobble plate fixed to a rotary shaft and a piston reciprocally moving through the sliding member with rotation of said wobble plate, wherein said sliding member is made of a copper base sintered alloy in which ceramic super fine particles, and solid lubricant particles or solid lubricant short size fibers are dispersed and wherein said ceramic super fine particles have a mean grain size of not more than 200 nm and a region where said ceramic super fine particles are dispersed in a matrix of said copper base sintered alloy by not less than 500 in number per section area of one square micrometer is formed substantially over the entirety region of said member.
Claim 19
Dependent Claim
62 words
A ceramic-particle-dispersed metallic member according to claim 2, wherein said ceramic superfine particles comprise particles made of at least one material selected from the group consisting of oxide, nitride, carbide and boride and wherein solid lubricant short size fibers are dispersed in a matrix, said solid lubricant short size fibers being selected from the group consisting of graphite whiskers and carbon fibers.
Claim 20
Dependent Claim
27 words
A ceramic-particle-dispersed metallic member according to claim 12, wherein said ceramic superfine particles comprise oxide particles and wherein said solid lubricant short size fibers comprise graphite whiskers.
Claim 21
Dependent Claim
63 words
A method of manufacturing a ceramic-particle-dispersed metallic member according to claim 10, wherein said ceramic superfine particles comprise particles made of at least one material selected from the group consisting of oxide, nitride, carbide and boride and wherein solid lubricant short size fibers are dispersed, said solid lubricant short size fibers being selected from the group consisting of graphite whiskers and carbon fibers.
Claim 22
Dependent Claim
31 words
A method of manufacturing a ceramic-particle-dispersed metallic member according to claim 14, wherein said ceramic superfine particles comprise oxide particles and wherein said solid lubricant short size fibers comprise graphite whiskers.
Claim 23
Dependent Claim
57 words
A compressor according to claim 11, wherein said ceramic superfine particles comprise particles made of at least one material selected from the group consisting of oxide, nitride, carbide and boride and wherein solid lubricant short size fibers are dispersed, said solid lubricant short size fibers being selected from the group consisting of graphite whiskers and carbon fibers.
Claim 24
Dependent Claim
25 words
A compressor according to claim 16, wherein said ceramic superfine particles comprise oxide particles and wherein said solid lubricant short size fibers comprise graphite whiskers.
Claim 25
Dependent Claim
41 words
A ceramic-particle-dispersed metallic member according to claim 2, wherein the matrix of the metallic member consists of copper, aluminum, iron or an alloy containing copper, aluminum or iron as a primary alloying element and said metallic member comprises a sintered material.
References Cited (Backward Citations)
GB1122498A
Cited
US3981062A
Cited
US4722751A
Cited
EP0191707A1
Cited
US4661154A
Cited
EP0367229A1
Cited
US4961779A
Cited
US5303617A
Cited
US5128213A
Cited
US5217814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-31 | 2000-07-01 | 2000-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-31 | 2004-07-01 | 2004-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-31 | 2008-07-01 | 2008-12-31 | $7700.00 | Window Closed / Lapsed |