Dab tsi yog cov khoom siv sib nqus

Xa mus rau cov ntaub ntawv uas yooj yim rau magnetize thiab tuaj yeem siv sib nqus tau ntau zaus, tab sis thaum cov hlau nplaum tawm, cov hlau nplaum ploj. Tus yam ntxwv ntawm tus yam ntxwv ntawm cov khoom siv no yog: siab sib nqus permeability (μ=B / H), uas yog, nws yog qhov yooj yim kom muaj hlau nplaum hauv qhov chaw sib nqus thiab nrawm mus txog qhov chaw siab magnetization siab; tab sis thaum lub nqus hlau nplaum ploj, nws txoj kev nco qab yog qhov me me heev. Cov khoom siv no yog siv dav hauv qhov siab siv tshuab hauv tshuab thev naus laus zis. Xws li kev sib nqus cores, lub taub hau sib nqus, nco txog cov khoom sib nqus; nws tuaj yeem siv los ua kev hloov pauv, hloov pauv, thiab lwm yam nyob rau hauv cov cuab yeej muaj zog tam sim no. Cov hlau nplaum uas nquag siv yog hlau-silicon alloys, hlau-npib tsib xee alloys, thiab cov hlau tsis tshua muaj hlau.

Fe- (3 % ~ 4 %) Si hlau-silicon alloy yog cov khoom siv hlau sib nqus feem ntau siv, uas feem ntau siv los ua cov tub ntxhais hlau ntawm cov khoom siv hluav taws xob tsawg, hloov cov cav tsheb thiab cov tshuab hluav taws xob; kev ua tau zoo ntawm cov hlau-npib tsib xee alloy zoo dua li cov hlau-silicon alloy, thiab cov khoom sawv cev cov neeg sawv cev yog Permalloy (Permalloy), nws muaj pes tsawg leeg yog 79 % Ni-21 % Fe, Permalloy muaj siab permeability (permalloy μ yog 10) -20 npaug ntawm cov hlau-silicon alloy), poob qis; Nrog lub siab permeability thiab tsis tshua muaj kev sib zog hauv cov sib nqus, nws tau dav siv hauv kev lag luam kev sib txuas lus, khoos phis tawj hluav taws xob thiab kev tswj hwm. Nws yog cov khoom siv hluav taws xob tseem ceeb; qhov sib txawv ntawm amorphous hlau (hlau iav) thiab hlau dav yog nws cov qauv Nws yog amorphous. Lawv tau ua los ntawm Fe, Co, Ni thiab semi-nws yog xim hlau ntsiab B thiab Si. Lub ntsiab lus tseem ceeb ntawm lawv cov txheej txheem ntau lawm yog ua kom txias cov kua hlau ntawm qhov nrawm nrawm, kom cov hlau khov tau txais cov qauv txheej txheem nrog cov txheej txheem tsis haum. Amorphous cov hlau nplaum muaj cov khoom sib nqus zoo heev, thiab lawv tau siv rau hauv kev siv hluav taws xob tsawg zog, lub zog sib nqus, lub taub hau kaw cia, thiab lwm yam ntxiv, qee cov hlau amorphous muaj cov tshuaj tiv thaiv zoo heev, thiab qee cov hlau amorphous muaj cov yam ntxwv ntawm lub zog siab thiab zoo toughness.