GB1452849A - Sinterable alumina compositions - Google Patents
Sinterable alumina compositionsInfo
- Publication number
- GB1452849A GB1452849A GB5035174A GB5035174A GB1452849A GB 1452849 A GB1452849 A GB 1452849A GB 5035174 A GB5035174 A GB 5035174A GB 5035174 A GB5035174 A GB 5035174A GB 1452849 A GB1452849 A GB 1452849A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compositions
- alumina
- sio
- glass
- ternary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000203 mixture Substances 0.000 title abstract 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 5
- 239000011521 glass Substances 0.000 abstract 5
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- 238000005266 casting Methods 0.000 abstract 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 abstract 1
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000005304 joining Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010587 phase diagram Methods 0.000 abstract 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/129—Ceramic dielectrics containing a glassy phase, e.g. glass ceramic
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
1452849 Suitable alumina compositions INTERNATIONAL BUSINESS MACHINES CORP 20 Nov 1974 [2 Jan 1974] 50351/74 Headings C1A and C1J A raw material admixture for use in the manufacture of a sintered object, comprises alumina and the ternary glass composition MgO-Al 2 O 3 -SiO 2 or CaO-Al 2 O 3 -SiO 2 to act as a sintering aid. The admixtures may be of high alumina content, e.g. 80% or more by weight. The alumina preferably comprises at least 95% by weight of alpha-alumina. Preferably the composition of the MgO-Al 2 O 3 -SiO 2 ternary glass is one of the compositions lying in the phase line joining compositions having, by weight, the proportions 17 : 15 : 67 and 30 : 27 : 43 on the ternary phase diagram for that glass. For the CaO-Al 2 O 3 -SiO 2 ternary glass the proportions are preferably, i.e. 18 : 15 : 67 and 40 : 22 : 38. Ceramic casting compositions comprising the admixture, a resin binder and a solvent may be prepared. In the example the compositions comprise Al 2 O 3 , glass, polyvinyl butyral, dioctyl phthalate, methanol, toluene and cyclohexanone. Objects, e.g. circuit boards may be formed by casting the compositions, evaporating the solvent and sintering the cast object. Electrical assemblies comprising a plurality of circuit boards may be prepared by conventional methods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43013674A | 1974-01-02 | 1974-01-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1452849A true GB1452849A (en) | 1976-10-20 |
Family
ID=23706201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5035174A Expired GB1452849A (en) | 1974-01-02 | 1974-11-20 | Sinterable alumina compositions |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5098911A (en) |
| DE (1) | DE2459176A1 (en) |
| FR (1) | FR2256122A1 (en) |
| GB (1) | GB1452849A (en) |
| IT (1) | IT1027868B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2909291C2 (en) * | 1979-03-09 | 1983-11-10 | Feldmühle AG, 4000 Düsseldorf | Support element for the screen or the felt of a paper or board machine and method for its production |
| JPS58142780A (en) * | 1982-02-17 | 1983-08-24 | 日本電気株式会社 | Ceramic heater |
| JPS58142779A (en) * | 1982-02-17 | 1983-08-24 | 日本電気株式会社 | Ceramic heater |
| JPS58142778A (en) * | 1982-02-17 | 1983-08-24 | 日本電気株式会社 | Ceramic heater |
| JPS60127259A (en) * | 1983-12-09 | 1985-07-06 | 松下電器産業株式会社 | Manufacture of substrate for thin film |
| JPS60260465A (en) * | 1984-06-01 | 1985-12-23 | 鳴海製陶株式会社 | Low temperature burnt ceramic |
| JPS62171943A (en) * | 1986-01-23 | 1987-07-28 | Matsushita Electric Works Ltd | Sintered glass powder |
| US5053370A (en) * | 1989-07-27 | 1991-10-01 | W. R. Grace & Co.-Conn. | Aluminum oxide ceramics having improved mechanical properties |
| EP0564982A3 (en) * | 1992-04-04 | 1995-09-13 | Hoechst Ceram Tec Ag | Ceramic alumina body with high metallization adherence |
-
1974
- 1974-11-20 GB GB5035174A patent/GB1452849A/en not_active Expired
- 1974-11-22 FR FR7441910A patent/FR2256122A1/fr not_active Withdrawn
- 1974-12-14 DE DE19742459176 patent/DE2459176A1/en active Pending
- 1974-12-20 IT IT3079274A patent/IT1027868B/en active
- 1974-12-24 JP JP49147718A patent/JPS5098911A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5098911A (en) | 1975-08-06 |
| DE2459176A1 (en) | 1975-07-10 |
| IT1027868B (en) | 1978-12-20 |
| FR2256122A1 (en) | 1975-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |