GB1449509A - Preparation of mild ferrites and barium titanates - Google Patents
Preparation of mild ferrites and barium titanatesInfo
- Publication number
- GB1449509A GB1449509A GB5499073A GB5499073A GB1449509A GB 1449509 A GB1449509 A GB 1449509A GB 5499073 A GB5499073 A GB 5499073A GB 5499073 A GB5499073 A GB 5499073A GB 1449509 A GB1449509 A GB 1449509A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrites
- mild
- gases
- preparation
- batio
- 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
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
- C04B35/468—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 based on barium titanates
- C04B35/4682—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 based on barium titanates based on BaTiO3 perovskite phase
-
- 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
- C04B35/26—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 ferrites
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Hard Magnetic Materials (AREA)
Abstract
1449509 Ferrites; barium titanate MONTECATINI EDISON SpA 27 Nov 1973 [30 Nov 1972] 54990/73 Addition to 1386505 Headings C1A and C1J Barium titanate and mild ferrites of formula Me(1) x Me(2) 1-x Fe<SP>3+</SP> 2-y Me(3) y O<SP>2-</SP> 4 , where Me(1) and Me(2) are Mn<SP>2+</SP>, Co<SP>2+</SP>, Ni<SP>2+</SP>, Cu<SP>2+</SP>, Mg<SP>2+</SP>, Cd<SP>2+</SP>, Zn<SP>2+</SP> or (¢Li<SP>+</SP>+¢Fe<SP>3+</SP>), Me(3) is Al<SP>3+</SP>, Cr<SP>3+</SP>, Sc<SP>3+</SP>, Ga<SP>3+</SP> or In<SP>3+</SP>, x is 0-1 and y is 0-2, are prepared from a slurry containing TiO 2 or ferric oxide and/or hydroxide and oxides and/or carbonates of Ba, Me(1), Me(2) and/or Me(3), by (a) drying and granulating the slurry with gases of inlet temperature 400-800‹ C., the gases being those obtained in step (b) below with or without other hot gases, to obtain granules of average particle size 150-300 microns; (c) calcining the granules at 700- 1100‹ C. for ferrites or at 1150-1200‹ C. for BaTiO 3 for 0À5-4 hr. in a fluidized bed reactor; and (d) cooling and grinding. Examples produce MgFe 2 O 4 and BaTiO 3 .
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2904971 | 1971-09-24 | ||
IT32283/72A IT1044942B (en) | 1972-11-30 | 1972-11-30 | PROCESS FOR PREPARING SWEET AND BARIUM TITANATES |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1449509A true GB1449509A (en) | 1976-09-15 |
Family
ID=26328813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5499073A Expired GB1449509A (en) | 1971-09-24 | 1973-11-27 | Preparation of mild ferrites and barium titanates |
Country Status (6)
Country | Link |
---|---|
AT (2) | AT339059B (en) |
CH (1) | CH589570A5 (en) |
DE (1) | DE2359424A1 (en) |
FR (1) | FR2208863B2 (en) |
GB (1) | GB1449509A (en) |
NL (1) | NL7316126A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114890780A (en) * | 2022-04-06 | 2022-08-12 | 哈尔滨工业大学 | Y-shaped hexagonal ferrite magnetoelectric coupling ceramic material and preparation method thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT378627B (en) * | 1982-05-11 | 1985-09-10 | List Hans | PIEZOELECTRICAL, ELECTROACOUSTIC COMPONENTS |
JPS58144839A (en) * | 1982-02-13 | 1983-08-29 | Tdk Corp | Magnetic carrier particles |
DE3729700C2 (en) * | 1987-09-04 | 1995-02-02 | Siemens Ag | Process for the production of pressable granules for the manufacture of products from sintered ceramic material |
AT393183B (en) * | 1987-12-15 | 1991-08-26 | Avl Verbrennungskraft Messtech | PIEZOELECTRIC CRYSTAL ELEMENT AND METHOD FOR PRODUCING THE SAME |
-
1973
- 1973-11-26 NL NL7316126A patent/NL7316126A/xx not_active Application Discontinuation
- 1973-11-27 GB GB5499073A patent/GB1449509A/en not_active Expired
- 1973-11-28 AT AT998373A patent/AT339059B/en not_active IP Right Cessation
- 1973-11-29 DE DE19732359424 patent/DE2359424A1/en not_active Withdrawn
- 1973-11-29 CH CH1677673A patent/CH589570A5/xx not_active IP Right Cessation
- 1973-11-30 FR FR7342813A patent/FR2208863B2/fr not_active Expired
-
1976
- 1976-06-23 AT AT457976A patent/AT343080B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114890780A (en) * | 2022-04-06 | 2022-08-12 | 哈尔滨工业大学 | Y-shaped hexagonal ferrite magnetoelectric coupling ceramic material and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CH589570A5 (en) | 1977-07-15 |
NL7316126A (en) | 1974-06-04 |
AT339059B (en) | 1977-09-26 |
AT343080B (en) | 1978-05-10 |
ATA998373A (en) | 1977-01-15 |
DE2359424A1 (en) | 1974-06-06 |
FR2208863A2 (en) | 1974-06-28 |
FR2208863B2 (en) | 1978-03-17 |
ATA457976A (en) | 1977-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |