Ukusetshenziswa kwe-ferrite magnet material

Ukusetshenziswa kwe-ferrite magnet material

Ferrite magnet material is a ferromagnetic metal oxide. In terms of electrical properties, the resistivity of ferrite is much greater than that of metal and alloy magnetic materials, and it also has higher dielectric functions. The magnetic function of ferrite also shows high magnetic permeability at high frequencies. Therefore, ferrite magnet material has become a common non-metallic magnetic material for high frequency and weak current limit. Due to the low magnetic energy retained per unit volume of ferrite and the low saturation magnetization, ferrites are limited in applications requiring high magnetic energy density at low frequency and high power constraints.

Ozibuthe beFerrite bakhiqizwa ngempushana i-metallurgy. Ngokuyinhloko zihlukaniswe zibe izinhlobo ezimbili: i-barium (Ba) ne-strontium (Sr), futhi ihlukaniswe yaba izinhlobo ezimbili: anisotropic kanye isotropic. Kuyi-a uzibuthe unomphela okungelula ukuwuqeda amandla futhi okungelula ukugqwala. I impahla, ne izinga lokushisa esiphezulu ukusebenza 250 degrees Celsius, kuyinto iqinile futhi ishwabene. Inganqunywa futhi icutshungulwe ngamathuluzi afana isihlabathi sedayimane, futhi singakhiwa ngesikhathi esisodwa ngesikhunta esicutshungulwe yi-alloy. Imikhiqizo enjalo isetshenziswa kabanzi kumamotho kazibuthe unomphela (Motor) nezikhulumi (USomlomo) neminye imikhakha. Isebenza kakhulu kwezokuxhumana, ezokusakaza, ukubala, ukulawula okuzenzakalelayo, ukuzulazula kwe-radar, ukuhamba emkhathini, isathelayithi ukuxhumana, ukukala insimbi, ukuphrinta, ukwelashwa kokungcola, i-biomedicine, ezokuthutha ezihamba ngesivinini esikhulu, njll.

Ferrite belongs to the category of semiconductors in electronics, so it is also called magnetic semiconductors. Magnetite is a simple ferrite.

1. Ama-ferrites ahlala njalo ahlanganisa i-barium i-ferrite (BaO.6Fe2O3) ne-strontium ferrite (SrO.6Fe2O3). Ukumelana okuphezulu, ingeyesigaba se-semiconductor, ngakho ukusetshenziswa kwamanje kwe-eddy kuncane, amandla okuphoqelela makhulu, angasetshenziswa ngempumelelo ku-air gap magnetic circuit, ehlukile kumajeneretha amancane kanye nozibuthe baphakade. Ayiqukethe izinsimbi eziyigugu njenge-nickel ne-cobalt. The impahla eluhlaza muhle kakhulu, the inqubo ayiyona inkimbinkimbi, futhi izindleko ziphansi. Ingangena esikhundleni se-AlNiCo unomphela uzibuthe. Umkhiqizo wawo wamandla kazibuthe onokugqama kakhulu uphansi, ngakho-ke mkhulu kune omagnethi bensimbi ngaphansi kwezimo zamandla kazibuthe. Izinga lokushisa layo ukuzinza akulungile, ukuthungwa kwayo kuyashwabana futhi kuyashwabana, futhi ayikwazi ukumelana umthelela nomuzwa. Ayizifanele izisetshenziswa zokulinganisa nemishini kazibuthe nezidingo eziqinile. Imikhiqizo ye-ferrite yamagnetic unomphela ikakhulukazi uchungechunge lwe-anisotropic. Angasetshenziswa ukwenza isiqalisi sikazibuthe esihlala unomphela amamotho, izinjini kazibuthe unomphela, izigxingi zikazibuthe unomphela, unomphela ukumiswa kazibuthe, ama-magnetic thrust bearing, i-broadband separators kazibuthe, izipikha, imishini ye-microwave, amashidi okwelapha kazibuthe, izinsiza-kuzwa, njll.

2. Ama-ferrites azibuthe athambile ahlanganisa i-manganese i-ferrite (MnO.Fe2O3), i-zinc ferrite (ZnO.Fe2O3), i-nickel zinc ferrite (Ni-Zn.Fe2O4), manganese magnesium zinc ferrite (Mn- Mg-Zn.Fe2O4) kanye nokunye okukodwa noma ama-ferrites anezingxenye eziningi. I-resistivity inkulu kakhulu kunaleyo ye-metallic izinto zikazibuthe, futhi inomsebenzi ophezulu we-dielectric. Ngakho-ke, ama-ferrites ezinezinto zombili ze-ferromagnetic kanye ne-ferroelectric kanye kwavela izakhiwo ze-ferromagnetic kanye ne-piezoelectric. Kumafrikhwensi aphezulu, its Ukungena kazibuthe kuphakeme kakhulu kunokwezinto ezizibuthe zensimbi, kufaka phakathi ama-alloys e-nickel-iron kanye ne-sendust. Ingasetshenziswa kumafrikhwensi isukela kuma-kilohertz ambalwa ukuya kumakhulu ama-megahertz. Ukucutshungulwa kwe-ferrite ingeyenqubo evamile ye-ceramic, ngakho-ke inqubo ilula, futhi kuningi izinsimbi eziyigugu ziyagcinwa, futhi izindleko ziphansi.

I-saturation magnetic flux density ye i-ferrite iphansi kakhulu, ngokuvamile i-1/3-1/5 kuphela yaleyo yensimbi. I-Ferrite inenani eliphansi amandla kazibuthe umthamo weyunithi ngayinye, ekhawulela ukusetshenziswa kwawo phansi amaza, amaza aphezulu, kanye nemingcele yebhendi yamandla aphezulu lapho uzibuthe uphakeme ukuminyana kwamandla kuyadingeka. Ifaneleka kakhulu imvamisa ephezulu, amandla aphansi kanye nendawo kagesi ebuthakathaka. I-nickel zinc ferrite ingasetshenziswa njenge-antenna i-pole kanye ne-intermediate frequency transformer core ekusakazeni komsakazo, kanye i-manganese zinc ferrite ingasetshenziswa njengomgogodla wokudlulisa umugqa ku-TV umamukeli. Ngaphezu kwalokho, ama-ferrite athambile asetshenziselwa ukwengeza izinzwa nama-filter cores emigqeni yokuxhumana. Ama-transducer aphezulu kazibuthe okurekhoda abelokhu esetshenziswa iminyaka eminingi.