Ferrite Magnets muaj tus nqi qis, tab sis vim lawv cov khoom siv hlau nplaum tsis zoo, lawv tau siv ntau hauv qee qhov chaw uas yuav tsum tau sib nqus.

Ferrite hlau nplaum yog tsim los ntawm ferromagnetic oxide cov ntaub ntawv. Nws yog cov khoom siv hlau nplaum nyuaj nrog kev ruaj ntseg thiab tus nqi qis. Txawm hais tias nws cov khoom siv hluav taws xob siab tshaj plaws (BH) max yog me me, uas ua rau qis permeability thiab magnetic teb zog, nws tseem muaj tus nqi siab hauv qee qhov kev siv vim nws cov khoom siv qis. Nws yog dav siv nyob rau hauv tsawg zaus thiab nruab nrab zaus transformers, sib nqus teb shielding thiab sib nqus levitation.

Cov qauv ntawm cov hlau nplaum ferrite belongs rau acicular oxides, feem ntau yog tsim los ntawm Fe2O3 thiab Fe3O4. Vim nws ruaj khov tshuaj muaj pes tsawg leeg thiab paub tab ua technology, nws muaj qhov zoo ntawm kev ruaj ntseg zoo thiab tus nqi qis. Txawm li cas los xij, vim cov khoom ntawm nws cov khoom siv hlau nplaum nyuaj, nws lub zog txhua yam tsis siab, thiab nws yuav tsum tau coated los txhim kho nws cov kev ua tau zoo.

Lub ntsiab tsis zoo ntawm ferrite hlau nplaum yog: remanence Br thiab coercive force Hc. Br sawv cev rau qhov muaj peev xwm magnetization ntawm cov khoom, thiab Hc qhia txog kev sib nqus ntawm cov khoom siv. Feem ntau, qhov siab dua Br tus nqi, qhov ntau dua qhov adsorption quab yuam ntawm cov hlau nplaum; qhov siab dua tus nqi Hc, qhov nyuaj dua nws yog tshem tawm cov hlau nplaum ntawm cov hlau nplaum, thiab qhov zoo dua qhov tuav ntawm cov hlau nplaum. Cov hlau nplaum ferrite feem ntau ntawm kev ua lag luam tam sim no muaj Br ntawm 4000-5000Gs thiab Hc ntawm 2500-4500Oe.

Ferrite hlau nplaum muaj cov nqi qis, tab sis vim lawv cov khoom sib nqus tsis zoo, lawv feem ntau yog siv rau hauv qee qhov chaw uas qhov kev xav tau sib nqus tsis siab, xws li cov khoom ua si, sib nqus sib nqus, thiab lwm yam. Rau cov cheeb tsam uas xav tau cov khoom sib nqus ntau dua, neodymium hlau boron hlau nplaum. yog qhov kev xaiv zoo tshaj plaws. Txawm li cas los xij, nyob rau lub sijhawm ntev, nrog kev txhim kho ntawm cov txheej txheem tsim khoom thiab txo tus nqi, daim ntawv thov ntawm cov hlau nplaum ferrite nyob rau hauv ntau yam yog tsis yooj yim sua.