Cov peev txheej ntawm lub teeb lub ntiaj teb tsis tshua muaj ntau nplua mias thiab tus nqi kuj pheej yig. Kev txhim kho ntawm lub teeb me me ntiaj teb hlau rau kev tsim khoom ntawm sintered NdFeB cov ntaub ntawv yog tsim nyog txhawb.
La, Fe, thiab B hlau tsis yooj yim rau kev ua La2Fe14B, thiab qhov kub nws nqaim heev, tab sis ib zaug tsim, nws ruaj khov nyob hauv qab 860 ° C. Nd tso nyiaj rau 65% -75% ntawm tus nqi ntawm sintered NdFeB. Nyob rau qib no, tus nqi ntawm La yog kwv yees li ib-caum ntawm Nd. Hloov La rau Nd tuaj yeem txo cov nqi thiab txhawb nqa qhov kev siv thoob ntiaj teb ntawm cov khoom siv tsawg. Nrog qhov nce ntawm La cov ntsiab lus, qhov sib nqus polarization siv Js, rov qab Br, kev quab yuam Hcj thiab qhov siab tshaj plaws cov khoom siv zog sib nqus (BH) m ntawm cov alloy yuav txo tag nrho. La yog cov tsis muaj hlau nplaum atom. Vim tias qhov tshwm sim ntawm cov sib nqus sib nqus, (BH) m txo ntau Ntau dua li Br txo.
Kev ruaj khov ntawm Ce2Fe14B yog qhov tsis zoo thiab nws yog qhov nyuaj tshaj rau daim ntawv. Nrog qhov nce ntawm Ce cov ntsiab lus, ntau cov khoom siv hlau nplaum yog txo. Tib lub sijhawm, qhov txuas ntxiv ntawm Ce yuav ua rau Curie qhov kub thiab txias thiab tsis kub ntawm cov hlau nplaum kom tsawg.
Lub Pr2Fe14B compound muaj ntau yam kev mob uas tuaj yeem siv los ua cov khoom sib nqus ruaj khov. Nws tuaj yeem mob siab txog li 1060 ° C kom tau txais cov khoom sib nqus zoo dua. Kev Siv (PrNd) -Fe hlau ua cov khoom siv raw tuaj yeem tsim sintered NdFeB cov hlau nplaum ruaj khov nrog cov khoom sib nqus zoo. Nws yuav tsum raug sau tseg tias Pr yog yooj yim rau oxidize dua li Nd, thiab tus nqi ntawm Pr yuav tsum raug tswj kom tsim nyog rau qee cov ntaub ntawv uas yuav tsum muaj kev ruaj khov siab.