Dab tsi yog cov haujlwm ntawm cov hlau nplaum hmoov hauv NdFeB hlau nplaum

Dab tsi yog cov haujlwm ntawm cov hlau nplaum hmoov hauv NdFeB hlau nplaum? Sib nqus hmoov yog cov ntawv luv ntawm cov hmoov sib nqus, uas yog ib qho kev sib sau ua ke ntawm ntau cov khoom siv yooj yim thiab qhov sib txawv ntawm cov khoom. Hmoov yog cov khoom nruab nrab ntawm cov khib nyiab thiab colloids. Cov khoom hauv qab {{0}}.1 μm yog hu ua colloids, thaum cov khoom siab tshaj 0.1 μm hu ua compacts lossis solids. Muaj ntau qhov me me ntawm cov khoom hauv neodymium magnetic hmoov, thiab qhov sib txuas ntawm qhov chaw me me heev.

Cov atoms ntawm qhov chaw tsis tuaj yeem tsim cov ntawv cog lus muaj zog. Yog li ntawd, lub cev hmoov tsis muaj qhov ruaj khov zoo li lub cev ntom ntom, tab sis nthuav tawm cov fluidity zoo ib yam li cov kua. Tsis muaj macroscopic pores hauv lub cev ntom ntom, lawv txuas nrog lub zog sib txuas ntawm atoms. Hmoov metallurgy feem ntau yog siv rau hauv kev npaj cov hlau nplaum tsawg hauv ntiaj teb. Alloy ingots yog tsim los ntawm txoj kev no.

Neodymium hlau nplaum hmoov muab faib ua peb txheej txheem: ntxhib, nruab nrab thiab nplua, thiab cov hmoov loj yuav tsum yog 3-5μm. Tsis tshua muaj lub ntiaj teb hlau nplaum hlau yog yooj yim oxidized, piv txwv li, ua SMZ03 thiab ND203. Cov oxide hmoov zoo no yuav tshwm sim nyob rau hauv huab cua ntawm qhov kub thiab txias, thiab los ntawm kev sib nqus sib nqus, cov hmoov yuav dhau los ua cov hmoov sib xyaw ua ke, piv txwv li sib sau ua ke los ntawm van der Waals rog, London rog thiab sib nqus sib nqus ntawm cov hmoov ib pawg me me.

Yog li ntawd, cov saum toj no-hais tsis tshua muaj lub ntiaj teb ruaj khov hlau nplaum hlau hmoov hmoov tsis zoo fluidity nyob rau hauv lub ntsiab huab cua, uas ua rau tej yam teeb meem nyob rau hauv lub directional tsim nyob rau hauv lub magnetic teb nyob rau hauv lub kauj ruam tom ntej.