Dab tsi yog qhov tseem ceeb tshaj plaws uas cuam tshuam kev sib sib zog nqus ua tau?
Ambient kub. Txij thaum sintered NdFeB muaj qhov kub tsis txaus coefficient (αBr <-0.13% °="" c,="" αhcj=""><-0.6% °="" c),="" qhov="" kub="" siab="" tshaj="" thiab="" kub="" siab="" dua="" ntawm="" qhov="" chaw="" siv="" yuav="" ua="" rau="" ntau="" qhov="" kev="" tsis="" sib="" haum="" ntawm="" cov="" hlau=""> , nrog rau kev hloov pauv thiab tsis rov qab, rov qab tau thiab tsis tau.
chaw voj voos. NdFeB nws tus kheej yog yooj yim corroded thiab oxidized. Feem ntau, peb siv kev kho mob los tiv thaiv nws.
Tiv thaiv kom cov hlau nplaum tas li, tab sis nws tsis yog lub ntsiab tsim teeb meem ntawm cov av qeeg hauv cov hlau nplaum. Lub tshuab ziab khaub ncaws ib puag ncig, cov hlau nplaum
Ntev yog qhov kev pab cuam lub neej.
Yuav ua li cas los ntsuas cov theem ntawm kev sib nqus ntawm kev sib nqus?
Nws muaj peb qho tsis tseem ceeb:
Br
Gauss yog qhov ntsuas uas ntsuas qhov dag zog ntawm cov hlau nplaum uas tau muab los ntawm cov hlau nplaum; lub coercive quab yuam Hc (Cem Txwv).
Oersteds yog ib qho kev ntsuas ntawm kev muaj peev xwm tawm tsam demagnetization; cov khoom sib nqus zog hauv BHmax, hauv Gauss-Oersteds, yog lub cev muaj nuj nqis heev uas taw tes npaum li cas lub zog khaws tseg.
