GB598038A - Improvements relating to dielectric compositions and to methods of producing the same - Google Patents
Improvements relating to dielectric compositions and to methods of producing the sameInfo
- Publication number
- GB598038A GB598038A GB2227845A GB2227845A GB598038A GB 598038 A GB598038 A GB 598038A GB 2227845 A GB2227845 A GB 2227845A GB 2227845 A GB2227845 A GB 2227845A GB 598038 A GB598038 A GB 598038A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium
- titanium dioxide
- vitrification
- firing
- impurities
- 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 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 12
- 239000004408 titanium dioxide Substances 0.000 abstract 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 4
- 239000000292 calcium oxide Substances 0.000 abstract 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 4
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 abstract 4
- 238000010304 firing Methods 0.000 abstract 4
- 239000012535 impurity Substances 0.000 abstract 4
- 238000004017 vitrification Methods 0.000 abstract 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 abstract 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 2
- 239000011575 calcium Substances 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- -1 e.g. Substances 0.000 abstract 2
- 230000004907 flux Effects 0.000 abstract 2
- 235000012204 lemonade/lime carbonate Nutrition 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
- C04B35/465—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
A composition consisting substantially of calcium titanate is produced by firing to vitrification a mixture of commercial grade titanium dioxide and a compound of calcium, e.g., lime or calcium carbonate, which exists as calcium oxide at the temperature of vitrification and is present in an amount sufficient to react stoichiometrically with the titanium dioxide to form calcium titanate, with a slight excess of calcium oxide sufficient to combine with the impurities or most of the impurities in the titanium dioxide. The firing may be performed in the presence of a flux yielding phosphorous pentoxide, such as ammonium diacid phosphate.ALSO:A dielectric composition consisting substantially of calcium titanate is produced by firing to vitrification a mixture of commercial grade titanium dioxide and a compound of calcium, e.g., lime or calcium carbonate, which exists as calcium oxide at the temperature of vitrification and is present in an amount sufficient to react stoichiometrically with the titanium dioxide to form calcium titanate, with a slight excess of calcium oxide sufficient to combine with the impurities or most of the impurities in the titanium dioxide. The firing may be performed in the presence of a flux yielding phosphorus pentoxide, such as ammonium diacid phosphate. The product obtained may be milled wet, dried and comminuted, mixed with water, pressed or moulded into the desired form and fired.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB598038A true GB598038A (en) | 1948-02-09 |
Family
ID=1736842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2227845A Expired GB598038A (en) | 1945-08-29 | Improvements relating to dielectric compositions and to methods of producing the same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB598038A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689185A (en) * | 1954-09-14 | Ceramic dielectric having a basis of | ||
| US3969252A (en) * | 1973-09-19 | 1976-07-13 | Nippon Electric Company, Ltd. | Dielectric ceramic compositions of BaTiO3 -BaZrO3 -CaTiO3 system |
| US4489168A (en) * | 1981-12-30 | 1984-12-18 | North American Philips Corporation | Composition of matter for use in manufacturing non-magnetic parts of a magnetic head and method of manufacturing the composition |
-
1945
- 1945-08-29 GB GB2227845A patent/GB598038A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689185A (en) * | 1954-09-14 | Ceramic dielectric having a basis of | ||
| US3969252A (en) * | 1973-09-19 | 1976-07-13 | Nippon Electric Company, Ltd. | Dielectric ceramic compositions of BaTiO3 -BaZrO3 -CaTiO3 system |
| US4489168A (en) * | 1981-12-30 | 1984-12-18 | North American Philips Corporation | Composition of matter for use in manufacturing non-magnetic parts of a magnetic head and method of manufacturing the composition |
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