Lub neej ntawm cov hlau nplaum muaj zog yog qhov teeb meem nyuaj vim tias nws nyob ntawm ntau yam sib txawv, nrog rau hom hlau nplaum, kev tsim khoom zoo, kev siv cov xwm txheej, thiab lwm yam. Nyob rau hauv cov xwm txheej zoo tagnrho, cov hlau nplaum zoo, muaj zog hlau nplaum tuaj yeem tuav nws cov khoom sib nqus tau ntau xyoo. los yog ntau dua. Ua ntej, hom hlau nplaum cuam tshuam nws txoj sia. Piv txwv li, NdFeB hlau nplaum yog cov hlau nplaum uas muaj zog heev. Nws muaj cov khoom sib nqus muaj zog heev, tab sis yooj yim puas nyob rau hauv qhov kub thiab txias. Nyob rau hauv sib piv, samarium cobalt hlau nplaum muaj zoo thermal stability thiab yog li ntawd yuav muaj lub neej ntev nyob rau hauv high-temperature ib puag ncig.
Kev tsim khoom zoo ntawm cov hlau nplaum kuj cuam tshuam rau nws txoj sia. Cov txheej txheem tsim khoom ntawm cov hlau nplaum yuav tsum muaj kev tswj xyuas kom meej meej thiab kev ncaj ncees ntawm lawv cov microstructure. Cov hlau nplaum zoo yuav tsum muaj cov hlau nplaum sib nqus thiab tsis muaj qhov tawg lossis lwm yam tsis xws luag. Tsis tas li ntawd, cov xwm txheej uas siv cov hlau nplaum yuav cuam tshuam rau nws txoj sia. Cov hlau nplaum yuav dhau los ua oxidized lossis corroded yog siv nyob rau hauv cov av noo, acidic, los yog alkaline ib puag ncig, uas yuav ua rau txo qis hauv lawv cov khoom sib nqus. Yog li ntawd, cov hlau nplaum yuav tsum tau muab khaws cia kom zoo thiab siv rau hauv qhov chaw tsim nyog.
Zuag qhia tag nrho, lub neej ntev ntawm cov hlau nplaum muaj zog tuaj yeem nyob ntawm ob peb xyoos mus rau kaum xyoo. Txhawm rau kom ua tiav lub neej ntawm koj cov hlau nplaum, xaiv hom hlau nplaum tsim nyog rau koj daim ntawv thov tshwj xeeb, yuav cov hlau nplaum zoo, thiab xyuas kom meej tias cov txheej txheem kev khiav hauj lwm thiab kev saib xyuas raug ua raws thaum siv thiab khaws cov hlau nplaum. Txawm li cas los xij, txawm tias nyob hauv qhov xwm txheej zoo tshaj plaws, tag nrho cov hlau nplaum yuav thaum kawg poob lawv cov hlau nplaum. Qhov no yog vim hais tias cov hlau nplaum cov hlau nplaum sib nqus maj mam dhau los ntawm kev hloov kho tshiab, ua rau cov hlau nplaum hlau nplaum yuav txo qis. Cov txheej txheem no hu ua magnetic aging. Txawm hais tias tus txheej txheem no feem ntau qeeb, nws yog qhov kev zam.
