GB1475866A - High pressure metal vapour lamp and a transparent polycrystalline alumina tube therefor - Google Patents
High pressure metal vapour lamp and a transparent polycrystalline alumina tube thereforInfo
- Publication number
- GB1475866A GB1475866A GB845676A GB845676A GB1475866A GB 1475866 A GB1475866 A GB 1475866A GB 845676 A GB845676 A GB 845676A GB 845676 A GB845676 A GB 845676A GB 1475866 A GB1475866 A GB 1475866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- end portions
- microns
- high pressure
- grain size
- 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 3
- 239000002184 metal Substances 0.000 title abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 108010016766 KK 3 Proteins 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000007858 starting material 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50031769A JPS51107683A (en) | 1975-03-18 | 1975-03-18 | Taketsushotomeiaruminahatsukokan |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1475866A true GB1475866A (en) | 1977-06-10 |
Family
ID=12340241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB845676A Expired GB1475866A (en) | 1975-03-18 | 1976-03-03 | High pressure metal vapour lamp and a transparent polycrystalline alumina tube therefor |
Country Status (7)
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1597162A (en) * | 1977-03-10 | 1981-09-03 | Ngk Insulators Ltd | Transparent polycrystalline alumina and high pressure vapour discharge lamp |
JPS5477481A (en) * | 1977-12-02 | 1979-06-20 | Ngk Insulators Ltd | Polycrystal transparent alumina light emitting tube and high voltage vapor discharge lamp using same |
JPS6022670B2 (ja) * | 1978-05-12 | 1985-06-03 | 日本碍子株式会社 | 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 |
FR2476636A1 (fr) * | 1980-02-26 | 1981-08-28 | Euroceral | Tube en alumine translucide localement noir et son procede de fabrication |
US4736136A (en) * | 1986-06-16 | 1988-04-05 | Gte Laboratories Incorporated | Discharge lamps with coated ceramic arc tubes and fabrication thereof |
JP4613408B2 (ja) * | 1999-10-15 | 2011-01-19 | 日本碍子株式会社 | 高圧放電灯用発光管の製造方法 |
WO2002007187A1 (fr) * | 2000-07-19 | 2002-01-24 | Ngk Insulators, Ltd. | Tube a arc en ceramique polycristalline pour lampe a decharge de haute brillance et procede de fabrication de ce tube |
JP2002184352A (ja) * | 2000-07-19 | 2002-06-28 | Ngk Insulators Ltd | 高輝度放電灯用多結晶セラミックス発光管及びその製造方法 |
US6648638B2 (en) | 2001-12-28 | 2003-11-18 | 3M Innovative Properties Company | Orthodontic appliances including polycrystalline alumina-based ceramic material, kits, and methods |
US6878456B2 (en) | 2001-12-28 | 2005-04-12 | 3M Innovative Properties Co. | Polycrystalline translucent alumina-based ceramic material, uses, and methods |
WO2003075312A1 (fr) * | 2002-03-07 | 2003-09-12 | Ngk Insulators,Ltd | Boitier electroluminescent pour lampe a decharge haute tension et procede de preparation d'un produit fritte d'alumine transparente polycristalline |
US6949145B2 (en) * | 2002-04-05 | 2005-09-27 | Boc, Inc. | Vapor-assisted cryogenic cleaning |
JP2008177151A (ja) * | 2006-09-25 | 2008-07-31 | Toshiba Lighting & Technology Corp | 高圧放電ランプ、高圧放電ランプ点灯装置および照明装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026210A (en) * | 1961-01-03 | 1962-03-20 | Gen Electric | Transparent alumina and method of preparation |
US3026177A (en) * | 1961-04-25 | 1962-03-20 | Gen Electric | Process for producing transparent polycrystalline alumina |
GB1252851A (US20100012521A1-20100121-C00001.png) * | 1969-08-27 | 1971-11-10 | ||
US3834939A (en) * | 1970-02-19 | 1974-09-10 | Ibm | Method of forming doped silicon oxide layers on substrates and paint-on compositions useful in such methods |
JPS4898684A (US20100012521A1-20100121-C00001.png) * | 1972-03-27 | 1973-12-14 | ||
US3834915A (en) * | 1972-07-24 | 1974-09-10 | Gte Sylvania Inc | Fine grain translucent alumina |
US3875277A (en) * | 1973-07-30 | 1975-04-01 | Westinghouse Electric Corp | Method for making polycrystalline alumina arc tubes |
-
1975
- 1975-03-18 JP JP50031769A patent/JPS51107683A/ja active Pending
-
1976
- 1976-03-03 GB GB845676A patent/GB1475866A/en not_active Expired
- 1976-03-10 NL NLAANVRAGE7602507,A patent/NL176772C/xx not_active IP Right Cessation
- 1976-03-10 DE DE2609974A patent/DE2609974C3/de not_active Expired
- 1976-03-11 SU SU762340052A patent/SU651686A3/ru active
- 1976-03-17 FR FR7607696A patent/FR2304589A1/fr active Granted
-
1979
- 1979-08-28 US US06/070,472 patent/US4264541A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL176772B (nl) | 1985-01-02 |
DE2609974B2 (de) | 1978-02-16 |
DE2609974A1 (de) | 1976-09-23 |
DE2609974C3 (de) | 1978-10-19 |
NL7602507A (nl) | 1976-09-21 |
FR2304589B1 (US20100012521A1-20100121-C00001.png) | 1979-09-21 |
SU651686A3 (ru) | 1979-03-05 |
FR2304589A1 (fr) | 1976-10-15 |
JPS51107683A (en) | 1976-09-24 |
NL176772C (nl) | 1985-06-03 |
US4264541A (en) | 1981-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |