US2085830A - Magnetic material and vanadium pentoxide bonding means therefor - Google Patents

Magnetic material and vanadium pentoxide bonding means therefor Download PDF

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Publication number
US2085830A
US2085830A US67491A US6749136A US2085830A US 2085830 A US2085830 A US 2085830A US 67491 A US67491 A US 67491A US 6749136 A US6749136 A US 6749136A US 2085830 A US2085830 A US 2085830A
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Prior art keywords
vanadium pentoxide
magnetic material
means therefor
bonding means
pressed
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US67491A
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Ruben Samuel
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

Definitions

  • This invention relates to pressed and bonded granular materials, useful in the production of magnets.
  • An object of the invention is the provision of 5 an improved bonding agent for magnets. of the pressed type. Another object is to provide a means wheregy rzidagnets may be simply and economically prouc Further objects will be apparent from the disclosure.
  • vanadium pentoxide is espe- 20 cially suitable for these purposes. It allows the production of a pressed magnet of the permanent type with materials ordinarily too brittle for practical use.
  • the varimagnet for instance, nickel, aluminum, cobalt and iron. are processed into very finely divided granules and milled with powdered vanadium pentoxide in the proportion or about ten (10%) 30 percent by weight the magnetic material.
  • the varimagnet for instance, nickel, aluminum, cobalt and iron.
  • the material is a dense, tough structure with minimum gaps between the metal granules. It can be repeatedly heated or quenched without affecting its mechanical strength.
  • I may use twenty (20%) percent nickel, twenty percent aluminum, ten (10%) percent cobalt and fifty (50%) percent iron, these materials being combined with approximately ten (10%) percent of vanadium pentoxide.
  • the materials them- 15 selves nor the percentages given are particularly critical-the invention being concerned chiefly with the use of vanadium pentoxide as a bonding material in magnets of the pressed or pressed and sintered type.
  • a magnet material comprising magnetic particles and vanadium pentoxide.
  • a magnet material comprising magnetic particles bound together by vanadium pentoxide. 2 ous elements entering into the composition of the.
  • a magnet comprising finely divided metal or the iron' group bonded together by vanadium pentoxide'.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Description

Patented July 6, 1937 MAGNETIC MATERIAL AND VANADIUM.
PENTOXIDE BONDING MEANS THEREFOR Samuel Ruben, New Rochelle, N. Y.
No Drawing.
iclaims.
This invention relates to pressed and bonded granular materials, useful in the production of magnets. I
An object of the invention is the provision of 5 an improved bonding agent for magnets. of the pressed type. Another object is to provide a means wheregy rzidagnets may be simply and economically prouc Further objects will be apparent from the disclosure.
It is desirable, in the provision of permanent magnet materiaL-to have a bonding agent which will adhere as a very thin surface between the particles of the magnetic material and will allow the pressed and bonded material to be heat treated so as to provide maximum magnetic eiiects.
I have found that vanadium pentoxide is espe- 20 cially suitable for these purposes. It allows the production of a pressed magnet of the permanent type with materials ordinarily too brittle for practical use.
In the preparation oi the material, the varimagnet, for instance, nickel, aluminum, cobalt and iron. are processed into very finely divided granules and milled with powdered vanadium pentoxide in the proportion or about ten (10%) 30 percent by weight the magnetic material. In
order to aiiord better contacting during the milling.asmallamountoiwatercanbeadded. 'lhe mixed mass is then pressed and heated to ap- Application March s, 1936, Serial No. 67,491
proximately 100 C. at which temperature the oxide flows and integrally combines with the surface of the granules, at the same time binding them together. When cooled, the material is a dense, tough structure with minimum gaps between the metal granules. It can be repeatedly heated or quenched without affecting its mechanical strength. For a typical mixture, I may use twenty (20%) percent nickel, twenty percent aluminum, ten (10%) percent cobalt and fifty (50%) percent iron, these materials being combined with approximately ten (10%) percent of vanadium pentoxide. However, neither the materials them- 15 selves nor the percentages given are particularly critical-the invention being concerned chiefly with the use of vanadium pentoxide as a bonding material in magnets of the pressed or pressed and sintered type.
What is claimed is:
1. A magnet material comprising magnetic particles and vanadium pentoxide.
2. A magnet material comprising magnetic particles bound together by vanadium pentoxide. 2 ous elements entering into the composition of the.
3. A magnet comprising finely divided metal or the iron' group bonded together by vanadium pentoxide'.
4. The method of producing a magnet which comprises adding a quantity of vanadium pen-
US67491A 1936-03-06 1936-03-06 Magnetic material and vanadium pentoxide bonding means therefor Expired - Lifetime US2085830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US67491A US2085830A (en) 1936-03-06 1936-03-06 Magnetic material and vanadium pentoxide bonding means therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67491A US2085830A (en) 1936-03-06 1936-03-06 Magnetic material and vanadium pentoxide bonding means therefor

Publications (1)

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US2085830A true US2085830A (en) 1937-07-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177276A2 (en) * 1984-09-29 1986-04-09 Kabushiki Kaisha Toshiba Compressed magnetic powder core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177276A2 (en) * 1984-09-29 1986-04-09 Kabushiki Kaisha Toshiba Compressed magnetic powder core
EP0177276A3 (en) * 1984-09-29 1987-09-23 Kabushiki Kaisha Toshiba Compressed magnetic powder core
EP0434669A2 (en) * 1984-09-29 1991-06-26 Kabushiki Kaisha Toshiba Method of making a coated magnetic powder and a compressed magnetic powder core
EP0434669A3 (en) * 1984-09-29 1991-07-24 Kabushiki Kaisha Toshiba Method of making a coated magnetic powder and a compressed magnetic powder core

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