1. Cov khoom ntawm cov hlau nplaum sib txawv:
ib. Samarium cobalt hlau nplaum muaj pes tsawg leeg:
Samarium cobalt hlau nplaum yog cov khoom sib nqus ua los ntawm samarium, cobalt, thiab lwm yam hlau tsis tshua muaj hauv ntiaj teb cov ntaub ntawv los ntawm kev faib ua ke, yaj rau hauv cov hlau, crushing, nias, thiab sintering. Tsis tshua muaj lub ntiaj teb hlau samarium, tsawg lub ntiaj teb hlau cobalt, hlau hlau hlau, hlau hlau tooj liab, thiab ib qho me me ntawm zirconium tau ntxiv.
b. Kev sib xyaw ntawm NdFeB hlau nplaum:
NdFeB hlau nplaum yog tetragonal crystals tsim los ntawm neodymium, hlau, thiab boron (Nd2Fe14B). Tsis tshua muaj lub ntiaj teb hlau neodymium, hlau hlau hlau, cov hlau tsis yog hlau boron, ib qho me me ntawm dysprosium, niobium, thiab txhuas ntxiv.
2. Magnet kev ua tau zoo sib txawv:
Samarium cobalt hlau nplaum muaj cov khoom siv hluav taws xob zoo sib nqus, qhov kub tsis tshua muaj coefficient, siab ua haujlwm kub txog li 350 degree, thiab tsis muaj qhov kub tsis zoo. Thaum ua haujlwm kub siab tshaj 180 degree, nws cov khoom siv hluav taws xob sib nqus loj dua, qhov kub thiab txias, thiab tshuaj lom neeg ruaj khov siab dua neodymium. Hlau boron cov khoom siv hlau nplaum ruaj khov. Cov khoom siv hlau nplaum ruaj khov NdFeB sintered muaj zog sib nqus.
Hais txog hais lus, tag nrho kev ua tau zoo ntawm samarium cobalt hlau nplaum tsis muaj zog dua li ntawm neodymium hlau boron hlau nplaum.
3. Tus nqi ntawm cov hlau nplaum sib txawv
Rau samarium cobalt hlau nplaum thiab neodymium hlau boron hlau nplaum ntawm tib qhov kev ua tau zoo, tus nqi ntawm neodymium hlau boron hlau nplaum yog qis dua li ntawm samarium cobalt hlau nplaum. Cov ntsiab lus ntawm cov hlau hauv NdFeB hlau nplaum yog siab dua, cov ntsiab lus ntawm lub ntiaj teb tsis tshua muaj cov ntsiab lus tsawg dua, thiab tus nqi ntawm cov hlau yog pheej yig, yog li tus nqi ntawm NdFeB hlau nplaum yog pheej yig dua. Lub ntiaj teb tsis tshua muaj cov ntsiab lus samarium thiab cobalt hauv samarium cobalt hlau nplaum suav txog li 70 feem pua, yog li tus nqi siab dua me ntsis.
4. Lub peev xwm ntawm cov hlau nplaum tiv taus kub, oxidation, thiab corrosion yog txawv
Cov ntsiab lus ntawm hlau nyob rau hauv NdFeB hlau nplaum yog siab heev, uas yog ib qho yooj yim rau oxidized thiab corroded, yog li yuav tsum tau electroplating kev kho mob. Cov ntsiab lus ntawm hlau nyob rau hauv samarium cobalt hlau nplaum tsuas yog nyiaj rau ib feem me me, thiab lawv yog cov tsis tshua muaj lub ntiaj teb thiab hlau ntsiab uas tsis yooj yim oxidized thiab corroded.
Xaiv cov khoom tsim nyog raws li koj xav tau.