GB677418A - Ceramic ferromagnetic body with high maximum permeability - Google Patents

Ceramic ferromagnetic body with high maximum permeability

Info

Publication number
GB677418A
GB677418A GB1524/51A GB152451A GB677418A GB 677418 A GB677418 A GB 677418A GB 1524/51 A GB1524/51 A GB 1524/51A GB 152451 A GB152451 A GB 152451A GB 677418 A GB677418 A GB 677418A
Authority
GB
United Kingdom
Prior art keywords
per cent
oxide
water
less
manganese
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
Application number
GB1524/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steatite Research Corp
Original Assignee
Steatite Research Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steatite Research Corp filed Critical Steatite Research Corp
Publication of GB677418A publication Critical patent/GB677418A/en
Expired legal-status Critical Current

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
    • C04B35/42—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 chromites
    • 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
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B35/44—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 aluminates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)

Abstract

677,418. Magnetic compositions. STEATITE RESEARCH CORPORATION. Jan. 19, 1951 [May 27, 1950], No. 1524/51. Drawings to Specification. Class 38 (ii). A ferromagnetic composition comprises oxides of nickel, zinc, manganese and ferric iron in a ceramic ferrite form and has initial and maximum permeabilities of less than 1000, and more than 3000 respectively, a saturation flux density of more than 3000 gauss, a coercive force of less than 0.3 oersted and a Curie point above 160‹ C. The composition is made by mixing 17-21 per cent of zinc oxide, 9-13 per cent of nickel oxide, 64-68 per cent of ferric oxide and 2-5 per cent of manganese oxide in a ball-mill, heating between 2000‹ and 2800<SP>o</SP> F., again ball-milling, pulverizing with 2-4 per cent of a binder such as gum or flour, and water, and firing first in an oxidizing atmosphere, e.g. air, at about 2200‹ F., and then in a neutral atmosphere, e.g. water-vapour or nitrogen at a lower temperature, e.g. 2000‹ F.
GB1524/51A 1950-05-27 1951-01-19 Ceramic ferromagnetic body with high maximum permeability Expired GB677418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677418XA 1950-05-27 1950-05-27

Publications (1)

Publication Number Publication Date
GB677418A true GB677418A (en) 1952-08-13

Family

ID=22078085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1524/51A Expired GB677418A (en) 1950-05-27 1951-01-19 Ceramic ferromagnetic body with high maximum permeability

Country Status (1)

Country Link
GB (1) GB677418A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028485B (en) * 1954-06-30 1958-04-17 Gen Electric Process for the production of ferrites
US2958664A (en) * 1955-01-28 1960-11-01 Steatite Res Corp Making manganese-zinc ferrites
US3055833A (en) * 1957-10-31 1962-09-25 Rca Corp Mixed ferrospinels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028485B (en) * 1954-06-30 1958-04-17 Gen Electric Process for the production of ferrites
US2961407A (en) * 1954-06-30 1960-11-22 Gen Electric Mixed ferrite composition
US2958664A (en) * 1955-01-28 1960-11-01 Steatite Res Corp Making manganese-zinc ferrites
US3055833A (en) * 1957-10-31 1962-09-25 Rca Corp Mixed ferrospinels

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