Tšebeliso ea thepa ea makenete ea ferrite

2023-02-07

Tšebeliso ea thepa ea makenete ea ferrite


Ferrite magnet material ke ferromagnetic oxide ea tšepe. Mabapi le thepa ea motlakase, resistivity ea ferrite ke e kholo haholo ho feta ea tšepe le motsoako oa lisebelisoa tsa makenete, hape e na le mesebetsi e phahameng ea dielectric. Mosebetsi oa makenete oa ferrite o boetse o bontša holimo ho khoneha ha makenete ka maqhubu a phahameng. Ka hona, ferrite magnet material e fetohile ntho e tloaelehileng e seng ea tšepe ea makenete bakeng sa maqhubu a phahameng le a fokolang moeli oa hajoale. Ka lebaka la matla a tlase a khoheli a bolokiloeng ka unit volume ea ferrite le low saturation magnetization, ferrites li na le moeli lisebelisoa tse hlokang matla a matla a khoheli a phahameng ka lebelo le tlase le holimo mathata a matla.

 

Limanete tsa Ferrite li entsoe ka phofo metallurgy. Li arotsoe haholo ka mefuta e 'meli: barium (Ba) le strontium (Sr), 'me li arotsoe ka mefuta e' meli: anisotropic le isotropic. Ke a makenete e sa feleng eo ho seng bonolo ho e etsa demagnetize ebile ho seng bonolo ho e senya. The lintho tse bonahalang, tse nang le mocheso o phahameng oa ho sebetsa oa likhato tse 250 tsa Celsius, ke e thata ebile e brittle. E ka khaoloa le ho sebetsoa ka lisebelisoa tse kang lehlabathe la daemane, 'me e ka thehoa ka nako e le' ngoe ka hlobo e entsoeng ka motsoako. Lihlahisoa tse joalo li sebelisoa haholo ho li-motor tse sa feleng tsa makenete (Motor) le libui (Sebui) le masimo a mang. E sebetsa haholo puisanong, khaso, lipalo, taolo ea othomathike, ho tsamaea ka radar, ho tsamaea sebakeng, sathelaete puisano, tekanyo ea lisebelisoa, khatiso, phekolo ea tšilafalo, biomedicine, lipalangoang tsa lebelo le holimo, joalo-joalo.

 

Ferrite ke ea sehlopha sa li-semiconductors tsa elektronike, kahoo e boetse e bitsoa magnetic semiconductors. Magnetite ke ferrite e bonolo.

 

1. Li-ferrite tse sa feleng li kenyelletsa barium ferrite (BaO.6Fe2O3) le strontium ferrite (SrO.6Fe2O3). Reresisivity e phahameng, ke ea sehlopha sa semiconductor, kahoo tšebeliso ea hona joale ea eddy e nyane, matla a qobellang a maholo, a ka sebelisoa ka nepo ho lekhalo la moea oa potoloho ea makenete, e ikgethang bakeng sa dijenereithara tse nyane le dimakenete tse sa feleng. Ha e na letho litšepe tsa bohlokoa joalo ka nickel le cobalt. Thepa e tala e babatsehang, the ts'ebetso ha e thata, 'me litšenyehelo li tlase. E ka nkela AlNiCo sebaka sa ka ho sa feleng makenete. Sehlahisoa sa eona sa matla a matla a khoheli se phahameng se tlase, ka hona se seholo ho feta limmanete tsa tšepe tlas'a maemo a matla a matla a khoheli. Mocheso oa eona botsitso ha bo bobe, sebopeho sa eona se brittle ebile se brittle, 'me ha se khone ho mamella tšusumetso le maikutlo. Ha e loketse lisebelisoa tsa ho lekanya le lisebelisoa tsa makenete ka ditlhoko tse thata. Lihlahisoa tsa ferrite ea magnete e sa feleng ke tsona tse ka sehloohong letoto la anisotropic. Li ka sebelisoa ho etsa mochini o qalang oa magnet li-motor, li-motor tsa magnete tse sa feleng, li-concentrators tsa magnet, tse sa feleng li-suspension tsa makenete, li-magnetic thrust bearings, li-separators tsa mabone a Broadband, libui, lisebelisoa tsa microwave, maqephe a phekolo ea makenete, lithuso tsa ho utloa, joalo-joalo.

 

2. Li-ferrite tse bonolo tsa magnetic li kenyelletsa manganese ferrite (MnO.Fe2O3), zinki ferrite (ZnO.Fe2O3), nickel zinc ferrite (Ni-Zn.Fe2O4), manganese magnesium zinc ferrite (Mn- Mg-Zn.Fe2O4) le tse ling tse le 'ngoe kapa li-ferrite tse nang le likarolo tse ngata. The resistivity e kholo haholo ho feta ea metallic lisebelisoa tsa makenete, 'me e na le ts'ebetso e phahameng ea dielectric. Kahoo, li-ferrites tse nang le thepa ea ferromagnetic le ferroelectric hammoho le thepa ea ferromagnetic le piezoelectric e ile ea hlaha. Ka maqhubu a phahameng, eona Magnetic permeability e phahame haholo ho feta ea lisebelisoa tsa tšepe tsa makenete, ho kenyelletsa li-alloys tsa nickel-iron le sendust. E ka sebelisoa ka makhetlo a mangata ho tloha ho li-kilohertz tse 'maloa ho isa ho tse makholo tsa megahertz. Ho sebetsa ha ferrite ke ea ts'ebetso e tloaelehileng ea ceramic, kahoo ts'ebetso e bonolo, 'me e ngata litšepe tsa bohlokoa lia bolokoa, ’me litšenyehelo li tlaase.

 

The saturation magnetic flux density ea ferrite e tlase haholo, hangata ke 1/3-1/5 feela ea tšepe. Ferrite e na le maemo a tlase pokello ea matla a khoheli ka bophahamo ba yuniti, e fokotsang tšebeliso ea eona ka tlase maqhubu, maqhubu a phahameng, le meedi ya matla a phahameng a matla moo makenete a phahameng matla a matla a hlokahala. E loketse haholoanyane maqhubu a phahameng, matla a tlaase le sebaka se fokolang sa tšimo ea motlakase. Nickel zinc ferrite e ka sebelisoa e le antenna pole le intermediate frequency transformer core khaso ea seea-le-moea, le manganese zinki ferrite e ka sebelisoa e le mochini oa phetisetso ea mohala ho TV moamoheli. Ho feta moo, li-ferrite tse bonolo li sebelisoa ho eketsa li-sensor le li-filter cores meleng ea puisano. Li-transducer tse phahameng tsa ho rekota tsa makenete li bile e sebelisitsoeng lilemo tse ngata.

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