GB940403A - Method of making a high strength semicrystalline article - Google Patents
Method of making a high strength semicrystalline articleInfo
- Publication number
- GB940403A GB940403A GB3335961A GB3335961A GB940403A GB 940403 A GB940403 A GB 940403A GB 3335961 A GB3335961 A GB 3335961A GB 3335961 A GB3335961 A GB 3335961A GB 940403 A GB940403 A GB 940403A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hours
- article
- making
- high strength
- temperatures
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
- C03C10/0045—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
<PICT:0940403/C1/1> An article of glass consisting essentially by weight percentage of 40-68 SiO2; 8-32 Al2O3; 7-14 TiO2 and 8.5-23 MgO is heat treated to form a semi-crystalline body with an average modulus of rupture of at least 40,000 lb./sq. inch and linear thermal expansion coefficient of at least 100 X 10-7/ DEG C. between 0 DEG and 300 DEG C. by exposure to a temperature between 990 DEG and 1160 DEG C. for a time of at least 8 hours at the lower of the temperatures to 1/4 -hour at the higher but not longer than about 24 hours at the lower to about 1/2 -hour at the high temperature and thereafter cooling the article. The range of time of heating for the range of temperatures is given in the Figure. The preferred treatment is at 820 DEG C. for 2 hours followed by 8 hours at 1000 DEG C. A number of compositions are given. Specification 829,447 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5854960A | 1960-09-26 | 1960-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB940403A true GB940403A (en) | 1963-10-30 |
Family
ID=22017500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3335961A Expired GB940403A (en) | 1960-09-26 | 1961-09-18 | Method of making a high strength semicrystalline article |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE608545A (en) |
| DE (1) | DE1284064B (en) |
| GB (1) | GB940403A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0941973A2 (en) * | 1998-03-13 | 1999-09-15 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| EP0952966A1 (en) * | 1996-11-21 | 1999-11-03 | Corning Incorporated | $g(b)-QUARTZ-BASED GLASS-CERAMICS |
| US7264894B2 (en) | 1998-03-13 | 2007-09-04 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
-
1961
- 1961-09-18 GB GB3335961A patent/GB940403A/en not_active Expired
- 1961-09-25 DE DE1961C0025122 patent/DE1284064B/en active Pending
- 1961-09-26 BE BE608545A patent/BE608545A/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0952966A1 (en) * | 1996-11-21 | 1999-11-03 | Corning Incorporated | $g(b)-QUARTZ-BASED GLASS-CERAMICS |
| EP0952966A4 (en) * | 1996-11-21 | 2000-08-23 | Corning Inc | Beta-quartz-based glass-ceramics |
| EP0941973A2 (en) * | 1998-03-13 | 1999-09-15 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| EP0941973A3 (en) * | 1998-03-13 | 2000-09-27 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| US6294490B1 (en) | 1998-03-13 | 2001-09-25 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| US6569792B2 (en) | 1998-03-13 | 2003-05-27 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| US6774072B2 (en) | 1998-03-13 | 2004-08-10 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| US6960399B2 (en) | 1998-03-13 | 2005-11-01 | Hoya Corporation | Crystalized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
| US7264894B2 (en) | 1998-03-13 | 2007-09-04 | Hoya Corporation | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1284064B (en) | 1968-11-28 |
| BE608545A (en) | 1962-03-26 |
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