Peb feem ntau siv remanence, coercive force, thiab siab tshaj plaws magnetic zog khoom los ntsuas cov khoom sib nqus ntawm neodymium hlau nplaum.
1. Remanence (Br)
Tom qab cov hlau nplaum neodymium yog magnetized rau saturation nyob rau hauv ib tug sab nraud magnetic teb, qhov seem sib nqus induction siv thaum lub sab nraud magnetic teb raug txo mus rau xoom yog hu ua remanence. Chav tsev feem ntau yog millitesla (mT) lossis kilogauss (kGs), 1 Tesla=10, 000 Gauss.
2. Coercive force (Hcb)
Coercive quab yuam hais txog qhov rov qab sib nqus teb lub zog yuav tsum tau txo qhov remanence (Br) mus rau xoom tom qab cov hlau nplaum neodymium saturated. Chav tsev yog ampere ib 'meter' (A / m) lossis oersted (Oe), thiab kev sib raug zoo ntawm kev hloov pauv yog 1A / m= (4π / 1000) Oe.
3. Cov Khoom Siv Hluav Taws Xob (BH) max
Cov khoom siv hluav taws xob siab tshaj plaws (BH) max qhia qhov sib nqus zog ntom ntom tsim los ntawm cov hlau nplaum hauv qhov chaw nruab nrab ntawm nws ob tug ncej. Nws yog tus nqi siab tshaj plaws ntawm cov khoom ntawm B thiab H (unit: kJ / m³ lossis GOe), uas qhia ncaj qha rau qib kev ua haujlwm ntawm cov hlau nplaum.
Cov yam ntxwv cuam tshuam rau cov khoom sib nqus ntawm cov hlau nplaum neodymium
1. Raw khoom muaj pes tsawg leeg
Neodymium hlau nplaum yog cov khoom sib nqus ua los ntawm cov hlau tsis tshua muaj hauv ntiaj teb neodymium, hlau ntshiab thiab boron los ntawm cov hmoov metallurgy. Lwm cov ntsiab lus tseem tuaj yeem ntxiv rau cov khoom siv ternary Nd-Fe-B txhawm rau txhim kho cov khoom sib nqus ntawm cov hlau nplaum neodymium.
2. Sab nraud ib puag ncig
Kub: Neodymium hlau nplaum muaj kev txwv nruj rau kev ua haujlwm kub. Yog tias qhov kub thiab txias tshaj qhov kev txwv no, cov hlau nplaum yuav demagnetize. Thaum qhov kub siab tshaj qhov kub ntawm Curie, lub demagnetization ntawm cov hlau nplaum yuav irreversible.
Cov av noo: Neodymium hlau nplaum yog tsim los ntawm cov hmoov hlau metallurgy, nrog cov qauv loj hauv qhov khoob thiab cov ntsiab lus hlau siab, uas yog qhov yooj yim rau xeb. Yog li ntawd, neodymium hlau nplaum feem ntau yog coated nrog anti-corrosion txheej. Qhov ib puag ncig qhuav, lub zog sib nqus ntawm neodymium hlau nplaum yuav kav ntev dua.
