DE1112004B - Process for the production of a magnetostrictive nickel-zinc-vanadium ferrite - Google Patents
Process for the production of a magnetostrictive nickel-zinc-vanadium ferriteInfo
- Publication number
- DE1112004B DE1112004B DEG24365A DEG0024365A DE1112004B DE 1112004 B DE1112004 B DE 1112004B DE G24365 A DEG24365 A DE G24365A DE G0024365 A DEG0024365 A DE G0024365A DE 1112004 B DE1112004 B DE 1112004B
- Authority
- DE
- Germany
- Prior art keywords
- zinc
- magnetostrictive
- oxide
- nickel
- vanadium
- 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.)
- Pending
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
- C04B35/26—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
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Description
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
kl. 80 b 8/09kl. 80 b 8/09
INTERNAT.KL. C 04 bINTERNAT.KL. C 04 b
G 24365 IVc/80bG 24365 IVc / 80b
BEKANNTMACHUNG DER ANMELDUNG UNDAUSGABEDERNOTICE THE REGISTRATION ANDOUTPUTE
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines magnetostriktiven Nickel-Zink-Vanadium-Ferrits, bei dem 40 bis 60 Molprozent Eisenoxyd, 0,1 bis 1,0 Molprozent Vanadiumoxyd, Rest Zinkoxyd und Nickeloxyd in Pulverform gemischt, in eine Form gebracht und in Luftatmosphäre gebrannt werden.The invention relates to a method for producing a magnetostrictive nickel-zinc-vanadium ferrite, with 40 to 60 mol percent iron oxide, 0.1 to 1.0 mol percent vanadium oxide, the remainder zinc oxide and nickel oxide mixed in powder form, placed in a mold and fired in an air atmosphere.
Es sind bereits Ferrite mit den zuvor angegebenen Bestandteilen bekannt, bei denen aber der Gehalt an Zinkoxyd 24 bis 32 Molprozent beträgt. Diese Ferrite zeichnen sich durch besondere magnetische Eigenschaften, insbesondere eine hohe Anfangspermeabilität, einen großen Gleichstromwiderstand und einen hohen Gütefaktor aus.There are already ferrites with the above-mentioned components known, but in which the content of Zinc oxide is 24 to 32 mole percent. These ferrites are particularly magnetic Properties, in particular a high initial permeability, a large DC resistance and a high quality factor.
Demgegenüber ist das Ziel der Erfindung die Her-Stellung eines Ferrits, der ausgeprägte magnetostriktive Eigenschaften zeigt.In contrast, the aim of the invention is the production of a ferrite, the pronounced magnetostrictive Properties shows.
Dies wird gemäß der Erfindung dadurch erreicht, daß der Gehalt an Zinkoxyd weniger als 18 Molprozent beträgt.This is achieved according to the invention in that the zinc oxide content is less than 18 mol percent amounts to.
Unter Magnetostriktion versteht man die Eigenschaft gewisser ferromagnetischer Stoffe, daß sie ihre magnetischen Eigenschaften unter mechanischen Beanspruchungen in reversibler Weise ändern bzw. daß sich ihre Abmessungen in Abhängigkeit von einem angelegten Magnetfeld in reversibler Weise verändern. Magnetostriktive Stoffe können in elektromechanischen Wandlern verwendet werden, die entweder mechanische Energie in Abhängigkeit von einem zugeführten elektrischen Signal erzeugen oder unter mechanischen Beanspruchungen ein elektrisches Signal dadurch verändern, daß sich die magnetischen Eigenschaften eines magnetostriktiven Abtastgliedes ändern, das elektromagnetisch mit einer geeigneten Schaltung gekoppelt ist. Ein allgemein anerkanntes Maß für die Fähigkeit des Materials, in dieser Weise auf die zugeführte Energie zu reagieren, wird als »elektromechanischer Kopplungskoeffizient« oder einfach »Kopplungskoeffizient« bezeichnet und gewöhnlich durch das Symbol »ft« ausgedrückt. Er ist ein Maß für die mechanische Energie, die im Verhältnis zu der gesamten aufgewendeten elektrischen Energie erhalten wird, bzw. umgekehrt ein Maß für die Änderung der magnetischen Energie, die durch die aufgewendete mechanische Energie erzeugt wird.Magnetostriction is the property of certain ferromagnetic substances that they are theirs Change magnetic properties under mechanical stress in a reversible manner or that their dimensions change in a reversible manner as a function of an applied magnetic field. Magnetostrictive substances can be used in electromechanical transducers, either generate mechanical energy as a function of a supplied electrical signal or change an electrical signal under mechanical stresses that the magnetic Properties of a magnetostrictive sensing element change the electromagnetic with a suitable Circuit is coupled. A generally accepted measure of the ability of the material to work in this way Reacting to the supplied energy is called the "electromechanical coupling coefficient" or simply referred to as "coupling coefficient" and usually expressed by the symbol "ft". He is a measure of the mechanical energy that is relative to the total electrical energy expended Energy is obtained, or, conversely, a measure of the change in magnetic energy caused by the mechanical energy used is generated.
Es wurde festgestellt, daß das gemäß der Erfindung hergestellte Material einen hohen Kopplungskoeffizient im Vergleich zu bekannten magnetostriktiven Stoffen aufweist.It has been found that the material made according to the invention has a high coupling coefficient compared to known magnetostrictive ones Has substances.
Der Kopplungskoeffizient nimmt bei Erhöhung des Zinkoxydgehalts über 18 Molprozent sehr rasch ab. Dies ist der Grund dafür, daß bei den zuvor er-Verf ahren zur Herstellung eines magnetostriktiven Nickel-Zink-Vanadium-FerritsThe coupling coefficient decreases very rapidly when the zinc oxide content is increased above 18 mol percent. This is the reason that in the previous method he used to manufacture a magnetostrictive Nickel-zinc-vanadium ferrite
Anmelder:Applicant:
General Electric Company,
Schenectady, N. Y. (V. St. A.)General Electric Company,
Schenectady, NY (V. St. A.)
Vertreter: Dipl.-Ing. E. PrinzRepresentative: Dipl.-Ing. E. Prince
und Dr. rer. nat. G. Hauser, Patentanwälte,and Dr. rer. nat. G. Hauser, patent attorneys,
München-Pasing, Bodenseestr. 3 aMunich-Pasing, Bodenseestr. 3 a
Leon Thaddeus Piekarski, Skaneateles, N. Y.Leon Thaddeus Piekarski, Skaneateles, N. Y.
(V. St. A.),
ist als Erfinder genannt worden(V. St. A.),
has been named as the inventor
wähnten bekannten Nickel-Zink-Vanadium-Ferriten keine magnetostriktiven Eigenschaften festgestellt werden konnten.known nickel-zinc-vanadium ferrites thought no magnetostrictive properties were found could become.
Ein besonderer Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß sehr leicht Körper von beliebiger Form hergestellt werden können, was bei den bisher bekannten magnetostriktiven Stoffen oft Schwierigkeiten bot.A particular advantage of the method according to the invention is that very easily body of Any shape can be produced, which is often the case with the previously known magnetostrictive substances Presented difficulties.
Die Erfindung wird im folgenden an Hand der Zeichnung erläutert. In der Zeichnung zeigtThe invention is explained below with reference to the drawing. In the drawing shows
Fig. 1 ein schematisches Schaltbild einer Schaltung zur Ermittlung des Kopplungskoeffizienten von magnetostriktiven Stoffen undFig. 1 is a schematic circuit diagram of a circuit for determining the coupling coefficient of magnetostrictive Fabrics and
Fig. 2 eine graphische Darstellung der Impedanz als Funktion der Frequenz bei einem Ringkern aus einem magnetostriktiven Ferrit.2 shows a graph of the impedance as a function of the frequency in the case of a toroidal core a magnetostrictive ferrite.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG24365A DE1112004B (en) | 1957-05-07 | 1958-04-22 | Process for the production of a magnetostrictive nickel-zinc-vanadium ferrite |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US830208XA | 1957-05-07 | 1957-05-07 | |
DEG24365A DE1112004B (en) | 1957-05-07 | 1958-04-22 | Process for the production of a magnetostrictive nickel-zinc-vanadium ferrite |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1112004B true DE1112004B (en) | 1961-07-27 |
Family
ID=25978116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG24365A Pending DE1112004B (en) | 1957-05-07 | 1958-04-22 | Process for the production of a magnetostrictive nickel-zinc-vanadium ferrite |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1112004B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE514013A (en) * | ||||
GB673720A (en) * | 1949-01-03 | 1952-06-11 | Aladdin Ind Inc | Magnetic core composition and method of producing the same |
FR1074864A (en) * | 1952-02-15 | 1954-10-11 | Steatite Res Corp | Square hysteresis loop ferromagnetic compositions |
-
1958
- 1958-04-22 DE DEG24365A patent/DE1112004B/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE514013A (en) * | ||||
GB673720A (en) * | 1949-01-03 | 1952-06-11 | Aladdin Ind Inc | Magnetic core composition and method of producing the same |
FR1074864A (en) * | 1952-02-15 | 1954-10-11 | Steatite Res Corp | Square hysteresis loop ferromagnetic compositions |
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