US4055451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite materials
Assignee: Individual
•
Filing: 1976-05-21
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Granted: 1977-10-25
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Expires: 1996-05-21
Abstract
Abstract The invention concerns a method of fabricating ceramic/metal or ceramic/ceramic composites. A porous surface region is produced on a ceramic material by sintering a granular substance onto the latter. Metal infiltrated into the porous region is then firmly mechanically bonded to the ceramic. Alternatively, the porous region provides a surface of large effective area to which another ceramic may be bonded chemically and mechanically.
Inventors
- 👤 Alan Gray Cockbain
- 👤 Michael John Latimer
- 👤 Norman Lawrence Parr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:35
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B35/00; C04B35/515; C04B35/58; C04B35/584; C04B35/593; C04B35/622; C04B35/64; C04B35/645; C04B35/71; C04B37/025; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/062; C04B2237/064; C04B2237/08; C04B2237/083; C04B2237/12; C04B2237/121; C04B2237/123; C04B2237/124; C04B2237/125; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/365; C04B2237/368; C04B2237/40; C04B2237/402; C04B2237/405; C04B2237/406; C04B2237/407; C04B2237/408; C04B2237/50; C04B2237/61; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49906; Y10T428/00; Y10T428/25; Y10T428/252
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A method of making a ceramic/metal composite, the method of comprising the steps of: 1. Sintering ceramic granules onto at least a part of the surface of a ceramic body to form a porous layer thereon. 2. Heating a metallic member to a temperature just below its melting point, and 3. Hot-pressing the said metallic member onto the said porous layer until the said metallic member is at least partially infiltrated into, and is interlocked with, the pores of the said porous layer.
Claim 2
Independent Claim
83 words
A method of making a ceramic/metal composite, the method of comprising the steps of: 1. Sintering ceramic granules onto at least a part of the surface of a ceramic body to form a porous layer thereon. 2. Heating a metallic member to a temperature just below its melting point, and 3. Hot-pressing the said metallic member onto the said porous layer until the said metallic member is at least partially infiltrated into, and is interlocked with, the pores of the said porous layer.
Claim 3
Dependent Claim
37 words
A method according to claim 1 wherein the ceramic granules are composed of material selected from the group consisting of silicon nitride, boron carbide, tungsten carbide, silicon carbide aluminum oxide, a metal silicate or a metal aluminate.
Claim 4
Dependent Claim
32 words
A method according to claim 2 wherein the metallic member is selected from the group consisting of aluminum, copper, iron, lead, gold, platinum, tin, nickel, steel, stainless steel, bronze, brass and nichrome.
Claim 5
Dependent Claim
32 words
A method according to claim 1 wherein the metallic member is selected from the group consisting of aluminum, copper, iron, lead, gold, platinum, tin, nickel, steel, stainless steel, bronze, brass and nichrome.
Claim 6
Independent Claim
128 words
A method of making a ceramic/metal composite, said method including the successive steps of: 1. sintering ceramic granules onto at least a part of the surface of a ceramic body to form a porous layer thereon, said ceramic granules composed of silicon nitride, boron carbide, tungsten carbide, silicon carbide, aluminum oxide, a metal silicate or a metal aluminate; 2. heating a metallic member to a temperature just below its melting point, said metal being aluminum, copper, iron, lead, gold, platinum, tin, nickel, steel, stainless steel, bronze, brass or nichrome; and thereafter 3. hot pressing the metallic member onto the porous layer until the metallic member is at least partially infiltrated into, and is interlocked with, the pores of the porous layer forming a mechanical bond to the ceramic.
Claim 7
Independent Claim
128 words
A method of making a ceramic/metal composite, said method including the successive steps of: 1. sintering ceramic granules onto at least a part of the surface of a ceramic body to form a porous layer thereon, said ceramic granules composed of silicon nitride, boron carbide, tungsten carbide, silicon carbide, aluminum oxide, a metal silicate or a metal aluminate; 2. heating a metallic member to a temperature just below its melting point, said metal being aluminum, copper, iron, lead, gold, platinum, tin, nickel, steel, stainless steel, bronze, brass or nichrome; and thereafter 3. hot pressing the metallic member onto the porous layer until the metallic member is at least partially infiltrated into, and is interlocked with, the pores of the porous layer forming a mechanical bond to the ceramic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |