DE2918729C2 - - Google Patents
Info
- Publication number
- DE2918729C2 DE2918729C2 DE2918729A DE2918729A DE2918729C2 DE 2918729 C2 DE2918729 C2 DE 2918729C2 DE 2918729 A DE2918729 A DE 2918729A DE 2918729 A DE2918729 A DE 2918729A DE 2918729 C2 DE2918729 C2 DE 2918729C2
- Authority
- DE
- Germany
- Prior art keywords
- alumina
- surface roughness
- aluminum oxide
- temperature
- burned
- 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
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 25
- 230000003746 surface roughness Effects 0.000 description 24
- 230000035699 permeability Effects 0.000 description 16
- 239000013078 crystal Substances 0.000 description 15
- 239000000395 magnesium oxide Substances 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 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
- C04B35/115—Translucent or transparent products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/302—Vessels; Containers characterised by the material of the vessel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/91—Sintering to produce translucent inorganic article
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53055459A JPS6022670B2 (ja) | 1978-05-12 | 1978-05-12 | 多結晶透明アルミナ及びその製造法ならびに高圧蒸気放射灯用発光管 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2918729A1 DE2918729A1 (de) | 1979-11-15 |
| DE2918729C2 true DE2918729C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-03-31 |
Family
ID=12999179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792918729 Granted DE2918729A1 (de) | 1978-05-12 | 1979-05-09 | Polykristallines, lichtdurchlaessiges aluminiumoxid, verfahren zu dessen herstellung und dessen verwendung in einer hochdruckdampfentladungslampe |
Country Status (10)
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679847A (en) * | 1979-12-04 | 1981-06-30 | Toshiba Ceramics Co Ltd | Light transmittable alumina tube and high pressure sodium vapor discharge lamp |
| FR2475533A1 (fr) * | 1980-02-08 | 1981-08-14 | Euroceral | Procede de fabrication de pieces, notamment de tubes, en alumine translucide |
| US4285732A (en) * | 1980-03-11 | 1981-08-25 | General Electric Company | Alumina ceramic |
| JPS6048466B2 (ja) * | 1980-05-15 | 1985-10-28 | 日本碍子株式会社 | 多結晶透明アルミナ焼結体の製造法 |
| HU185242B (en) * | 1981-02-18 | 1984-12-28 | Egyesuelt Izzolampa | Method for producing light-passing alumina sintered bodies advantageously cylinder-symmetrical ones |
| US4481300A (en) * | 1981-08-31 | 1984-11-06 | Raytheon Company | Aluminum oxynitride having improved optical characteristics and method of manufacture |
| US4520116A (en) * | 1981-08-31 | 1985-05-28 | Raytheon Company | Transparent aluminum oxynitride and method of manufacture |
| JPS58185478A (ja) * | 1982-04-26 | 1983-10-29 | 東芝セラミツクス株式会社 | 透光性アルミナ磁器の製造方法 |
| US4620131A (en) * | 1983-07-25 | 1986-10-28 | U.S. Philips Corporation | Lamp with discharge vessel made of densely sintered translucent aluminium oxide |
| DE3376001D1 (en) * | 1983-08-26 | 1988-04-21 | Hoechst Ceram Tec Ag | Process and apparatus for producing sintered polycrystalline translucent tubes |
| GB2170191B (en) * | 1985-01-26 | 1988-08-24 | Glaverbel | Forming refractory masses and composition of matter for use in forming such refractory masses |
| NL8502457A (nl) * | 1985-09-09 | 1987-04-01 | Philips Nv | Gasdicht gesinterd translucent aluminiumoxyde. |
| US4762655A (en) * | 1985-11-27 | 1988-08-09 | Gte Laboratories Incorporated | Method of sintering translucent alumina |
| US4797238A (en) * | 1985-11-27 | 1989-01-10 | Gte Laboratories Incorporated | Rapid-sintering of alumina |
| US4837069A (en) * | 1987-01-07 | 1989-06-06 | Minnesota Mining And Manufacturing Company | Transparent alumina microspheres |
| DE3834907C2 (de) * | 1987-10-15 | 1994-11-24 | Hoechst Ceram Tec Ag | Aluminiumoxidrohre und Verfahren zu ihrer Herstellung |
| US4948538A (en) * | 1988-10-11 | 1990-08-14 | Gte Laboratories Incorporated | Method of making translucent alumina articles |
| US5780377A (en) * | 1993-09-02 | 1998-07-14 | Toto Ltd. | Light-transmissive ceramics and method of manufacturing same |
| US5376606A (en) * | 1993-12-30 | 1994-12-27 | Korea Institute Of Science And Technology | Light-transmissive polycrystalline alumina ceramics |
| RU2117631C1 (ru) * | 1997-07-11 | 1998-08-20 | Российский химико-технологический университет им.Д.И.Менделеева | Способ получения порошка оксида алюминия для изготовления прозрачной керамики |
| JP3783445B2 (ja) | 1999-01-29 | 2006-06-07 | 住友化学株式会社 | 透光性アルミナ焼結体の製造方法およびその用途 |
| US6642656B2 (en) | 2000-03-28 | 2003-11-04 | Ngk Insulators, Ltd. | Corrosion-resistant alumina member and arc tube for high-intensity discharge lamp |
| EP1138647A1 (en) * | 2000-03-28 | 2001-10-04 | Ngk Insulators, Ltd. | Corrosion-resistant alumina member and arc tube for high intensity discharge lamp |
| JP4144176B2 (ja) * | 2000-11-22 | 2008-09-03 | 日本碍子株式会社 | 高圧放電灯用発光容器 |
| JP2004269290A (ja) * | 2003-03-06 | 2004-09-30 | Ngk Insulators Ltd | 透光性アルミナセラミックスの製造方法、透光性アルミナセラミックス、高圧放電灯用発光容器、造粒粉末および成形体 |
| US20080283522A1 (en) * | 2007-05-14 | 2008-11-20 | Shuyl Qin | Translucent polycrystalline alumina ceramic |
| US7678725B2 (en) * | 2007-05-14 | 2010-03-16 | General Electric Company | Translucent polycrystalline alumina ceramic |
| EP2305621B1 (en) * | 2009-09-09 | 2015-04-22 | NGK Insulators, Ltd. | Translucent polycrystalline sintered body, method for producing the same, and arc tube for high-intensity discharge lamp |
| US20110177747A1 (en) * | 2010-01-21 | 2011-07-21 | Thomas Patrician | Method of Making a Fritless Seal in a Ceramic Arc Tube for a Discharge Lamp |
| JP5993627B2 (ja) * | 2012-06-20 | 2016-09-14 | 日本特殊陶業株式会社 | アルミナ質焼結体及びその製造方法 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1126014A (fr) * | 1955-05-09 | 1956-11-13 | Abrasifs Du Sud Ouest | Pièces compactes en corindon brun |
| DE1199675B (de) * | 1958-12-29 | 1965-08-26 | Gen Electric | Verfahren zur Herstellung eines lichtdurchlaessigen Koerpers aus Aluminiumoxyd |
| DE1278318B (de) * | 1959-07-15 | 1968-09-19 | Gen Electric | Verfahren zur Herstellung von polykristallinen Formkoerpern aus Sinterkorund |
| US3026210A (en) * | 1961-01-03 | 1962-03-20 | Gen Electric | Transparent alumina and method of preparation |
| DE1261436C2 (de) * | 1961-12-01 | 1973-07-26 | Feldmuehle Ag | Sinterkoerper aus Aluminiumoxid |
| US3311482A (en) * | 1966-01-25 | 1967-03-28 | Emil A Klingler | Sintered transparent bodies of aluminum oxide and method of preparing the same |
| GB1252851A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1969-08-27 | 1971-11-10 | ||
| US4031177A (en) * | 1969-10-31 | 1977-06-21 | Compagnie Generale D'electroceramique | Process for the manufacture of articles of translucent alumina |
| JPS5137543B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-05-18 | 1976-10-16 | ||
| US3834915A (en) * | 1972-07-24 | 1974-09-10 | Gte Sylvania Inc | Fine grain translucent alumina |
| GB1443741A (en) * | 1973-07-03 | 1976-07-21 | Nikex Nehezipari Kulkere | Process for the manufacture of translucent polycrystalline alumina bodies |
| US3935495A (en) * | 1974-03-22 | 1976-01-27 | General Electric Company | Chemically polished polycrystalline alumina material |
| JPS548363B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-06-11 | 1979-04-14 | ||
| JPS51107683A (en) * | 1975-03-18 | 1976-09-24 | Ngk Insulators Ltd | Taketsushotomeiaruminahatsukokan |
| GB1597162A (en) * | 1977-03-10 | 1981-09-03 | Ngk Insulators Ltd | Transparent polycrystalline alumina and high pressure vapour discharge lamp |
| US4169875A (en) * | 1977-03-11 | 1979-10-02 | General Electric Company | Method of producing a tubular body of polycrystalline alumina |
| GB1595518A (en) * | 1977-03-11 | 1981-08-12 | Gen Electric | Polycrystalline alumina material |
-
1978
- 1978-05-12 JP JP53055459A patent/JPS6022670B2/ja not_active Expired
-
1979
- 1979-04-30 CA CA326,664A patent/CA1103000A/en not_active Expired
- 1979-05-03 AU AU46653/79A patent/AU531238B2/en not_active Ceased
- 1979-05-04 NL NLAANVRAGE7903530,A patent/NL179365C/xx not_active IP Right Cessation
- 1979-05-09 DE DE19792918729 patent/DE2918729A1/de active Granted
- 1979-05-11 HU HU79IU297A patent/HU180486B/hu not_active IP Right Cessation
- 1979-05-11 FR FR7912060A patent/FR2425414B1/fr not_active Expired
- 1979-05-12 PL PL1979215532A patent/PL126082B1/pl unknown
- 1979-05-14 US US06/038,771 patent/US4222978A/en not_active Expired - Lifetime
- 1979-05-14 GB GB7916645A patent/GB2022564B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| PL126082B1 (en) | 1983-07-30 |
| JPS54148008A (en) | 1979-11-19 |
| US4222978A (en) | 1980-09-16 |
| GB2022564B (en) | 1982-08-11 |
| NL179365C (nl) | 1986-09-01 |
| NL179365B (nl) | 1986-04-01 |
| AU531238B2 (en) | 1983-08-18 |
| CA1103000A (en) | 1981-06-16 |
| FR2425414A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-12-07 |
| HU180486B (en) | 1983-03-28 |
| PL215532A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-02-11 |
| NL7903530A (nl) | 1979-11-14 |
| DE2918729A1 (de) | 1979-11-15 |
| GB2022564A (en) | 1979-12-19 |
| FR2425414B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1983-06-17 |
| AU4665379A (en) | 1979-12-06 |
| JPS6022670B2 (ja) | 1985-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |