US4046302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of manufacturing bodies of conglomerated particles
Assignee: Individual
•
Filing: 1976-05-18
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Granted: 1977-09-06
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Expires: 1996-05-18
Abstract
Abstract A method of manufacturing a body of conglomerated particles has a primary step of coating the particles with very fine polycrystalline metal whiskers, which are sintered in place. The coated particles are then mixed with other filaments, of slightly larger size, which form a matrix. This is made coherent by metallic bonding of the filaments together and to the embedded coated particles. The resultant porous body may be compressed to reduce the porosity.
Inventors
- 👤 Hermann J. Schladitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:28
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B24; B24D; B24D18/00; C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0078; C01B3/0084; C22; C22C; C22C47/00; C22C47/14; B22F2998/00; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A method of manufacturing a body of conglomerated particles, comprising coating the particles with a network of polycrystalline metal whiskers with a diameter in the range 0.05 to 1 μm, heating the coated particles to a temperature at which the whiskers sinter together at their areas of contact, mixing the coated particles with filaments, and metallically bonding the filaments and the coated particles at their areas of contact.
Claim 2
Independent Claim
68 words
A method of manufacturing a body of conglomerated particles, comprising coating the particles with a network of polycrystalline metal whiskers with a diameter in the range 0.05 to 1 μm, heating the coated particles to a temperature at which the whiskers sinter together at their areas of contact, mixing the coated particles with filaments, and metallically bonding the filaments and the coated particles at their areas of contact.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 1, wherein the diameter of the whiskers is in the range 0.05 to 0.5 μm.
Claim 4
Dependent Claim
19 words
A method as claimed in claim 2, wherein the diameter of the whiskers is an average of 0.3 μm.
Claim 5
Dependent Claim
34 words
A method as claimed in claim 1, wherein the metallic connection of the filaments and the coated particles is effected by the deposition of metal by means of thermal decomposition of a metal compound.
Claim 6
Dependent Claim
30 words
A method as claimed in claim 4, wherein the metal compound is selected from the thermally decomposable compounds of the metals Fe, Ni, Mo, W, Cr, Cu, Ag and/or Au.
Claim 7
Dependent Claim
24 words
A method as claimed in claim 1, wherein the metallic connection of the filaments and the coated particles is effected by electroless metal deposition.
Claim 8
Dependent Claim
18 words
A method as claimed in claim 1, wherein the filaments have a diameter of up to 20 μm.
Claim 9
Dependent Claim
33 words
A method as claimed in claim 7, wherein the filaments are polycrystalline metal whiskers, and the mixed filaments and coated particles are heated to between 600° and 1100° C to bond them together.
Claim 10
Dependent Claim
31 words
A method as claimed in claim 8, wherein the filament whiskers are made from the metals Fe, Ni, Mo, W, Cr, alloys of these metals, or are dispersion hardened Fe whiskers.
Claim 11
Dependent Claim
30 words
A method as claimed in claim 1, wherein the whiskers are made from the metals Fe, Ni, Mo, W, Cr, alloys of these metals, or are dispersion hardened Fe whiskers.
Claim 12
Dependent Claim
13 words
A method as claimed in claim 1, wherein the conglomerated body is compressed.
Claim 13
Dependent Claim
28 words
A method as claimed in claim 1, wherein the filaments and coated particles are also joined to a substrate at the same time as they are bonded together.
Claim 14
Dependent Claim
17 words
A method as claimed in claim 1, wherein the initially porous body is impregnated with a metal.
Claim 15
Dependent Claim
18 words
A method as claimed in claim 1, wherein the initially porous body is impregnated with a synthetic resin.
Claim 16
Dependent Claim
31 words
A method as claimed in claim 1, wherein the particles, before they are coated with metal whiskers, are pre-coated by deposition of metal by the thermal decomposition of a metal compound.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |