Txoj Kev Npaj Samarium Cobalt Magnet

Samarium cobalt hlau nplaum xa mus rau cov khoom siv hlau nplaum ruaj khov ua los ntawm cov hlau tsis tshua muaj hauv ntiaj teb thiab cov hlau hloov pauv los ntawm cov txheej txheem qee yam. Vim lawv cov khoom siv hluav taws xob sib nqus siab, cov khoom sib nqus ruaj khov, thiab cov khoom siv zoo, lawv tau siv dav hauv tshuab, hluav taws xob, khoom siv, kev kho mob thiab lwm yam. Coercive force (Nws) yog ib qho tseem ceeb ntawm cov khoom siv samarium cobalt hlau nplaum, uas sawv cev rau lub peev xwm ntawm cov hlau nplaum kom khaws cov khoom sib nqus. Txawm li cas los xij, cov khoom siv samarium cobalt hlau nplaum nyob rau hauv daim duab ua ntej, xws li 2:17 hom samarium cobalt hlau nplaum cov khoom, muaj ib tug inherent coercivity ntawm 20K0e nyob rau hauv chav tsev kub, thiab kev tiv thaiv rau sab nraud inverse magnetic teb thiab lwm yam Cov teebmeem demagnetization yuav tsum tau txhim kho ntxiv. Yuav ua li cas ua cov hlau nplaum cobalt!

Cov teeb meem kev daws teeb meem los ntawm qhov kev tsim kho tam sim no yog kom kov yeej cov kev tsis txaus siab saum toj no ntawm cov duab ua ntej thiab muab cov khoom siv hlau nplaum samarium cobalt ruaj khov nrog kev sib zog siab. Cov txheej txheem kev tsim kho tam sim no yog tsim los muab samarium cobalt hlau nplaum cov khoom siv hlau nplaum ruaj khov, uas yog tsim los ntawm samarium, cobalt, hlau, tooj liab, zirconium thiab hnyav lub ntiaj teb tsis tshua muaj cov ntsiab lus, thiab nyob rau hauv cov ntsiab lus ntawm huab hwm coj feem pua, yog samarium {{0 }}.5 feem pua ​​, cobalt 44 50 feem pua ​​​​, Fe 14 20 feem pua ​​, Copper Nyiam, ib qho ntawm cov khoom hnyav saum ntiaj teb no yog erbium. Lwm qhov teeb meem kev daws teeb meem los ntawm qhov kev tsim kho tam sim no yog muab ib txoj hauv kev los tsim cov samarium cobalt cov hlau nplaum ruaj khov ntawm cov khoom tsim tam sim no, thiab samarium cobalt ruaj khov hlau nplaum cov khoom tsim los ntawm txoj kev muaj siab coercivity. Txoj kev tsim khoom ntawm samarium cobalt cov khoom siv hlau nplaum ruaj khov suav nrog cov hauv qab no:

1) Cov ntaub ntawv nyoos: Samarium, cobalt, hlau, tooj liab, zirconium thiab lub ntiaj teb tsis tshua muaj hnyav yog faib ua cov khoom siv raw los ntawm cov feem pua. Samarium 23 25.5 feem pua ​​, cobalt 44 50 feem pua ​​, hlau 14 20 feem pua ​​, tooj liab 3 8 feem pua ​​, zirconium 2 4 feem pua ​​, heavy rare earth element {{7} }.5 feem pua.

2) Muab cov khoom siv raw uas tau npaj los ntawm kev yaj cov hlau rau hauv lub tshuab nqus tsev vacuum nruab nrab zaus induction rauv kom yaj, thiab tom qab kev ua tiav tiav, txuas ntxiv kom sov thiab ua kom zoo rau 5 feeb ntawm qhov kub ntawm 1430 ~ 1450 c, thiab txhaj rau hauv pwm kom tau txais samarium cobalt alloy. Cov pwm yog feem ntau zoo dua yog dej-txias hom tooj liab.

3) Magnetic hmoov manufacturing Lub samarium cobalt alloy yog raug rau hydrogen crushing thiab pob milling kom tau cov hmoov sib nqus nrog ib tug particle loj ntawm 3.0 5.0 m. Hydrogen fragmentation yog hais txog kev hla hydrogen nyob rau hauv cov tshuaj tiv thaiv cov hlab nruab nrog samarium cobalt alloy, kom cov hydrogen siab mus txog 1MPa, qhov kub nce mus rau 150 degree, thiab qhov kub thiab txias yog khaws cia rau 20h, kom cov samarium cobalt alloy thiab hydrogen undergo ib hydrogen. cia cov tshuaj tiv thaiv thiab ua saturated; Tom qab cov tshuaj tiv thaiv, nce qhov kub ntawm 300 ~ 400 degree. Insulate lub pas dej da dej kom tag dehydrogenate cov tshuaj tiv thaiv cov khoom. Nyob rau hauv cov txheej txheem no, samarium cobalt alloy yog tawg raws li cov ciam teb ntawm grain, thiab cov hlau nplaum ua tiav lub hom phiaj ntawm hmoov nyob rau hauv cov xwm txheej ntawm kev ua kom ntseeg tau cov khoom siv lead ua.

4) Kev taw qhia thiab shaping magnetic hmoov yog taw qhia nyob rau hauv magnetic teb ntawm 1.8 ) 2.ot, thiab tom qab nias thiab sib sau, txias isopressing yog nqa tawm nyob rau hauv lub siab ntawm 200 (300 mi) kom tau txais thawj samarium cobalt dawb paug.

5) Sintering khoom tov nyob rau hauv lub sintering rauv, unbalanced sintering thawj samarium cobalt ib ntus sintered lub cev nyob rau hauv kev tiv thaiv ntawm inert roj argon, ib ntus sintering tag nrho sintered lub cev ntawm 10501180 rau 2030Min, thiab sintering ntawm 1009 vib nas this nyob rau hauv 1009 vib nas this. Txoj kev tsis sib haum sintering ntawm cov khoom siv tshuaj 90100Min ntawm 11681190 nyob rau lub sijhawm thib peb yog hais txog kev saib xyuas cov electrothermal khub ntawm ntau lub blocks hauv lub cub tawg hauv lub sijhawm tiag tiag, thiab kho lub zog cua sov hauv lub sijhawm tiag tiag raws li qhov kub ntawm cov electrothermal khub, yog li tias ntau thaj tsam Qhov kub ntawm cov blocks yog tib yam.

6) kev laus kev kho mob yog kom sov lub thib ob samarium cobalt dawb paug rau 835 (7) h ntawm 845c, ces txias mus rau 400C ntawm qhov ceev ntawm 0.5) 0.6 / min, khaws 3 plutonium, thiab cua-txias rau chav tsev kub tom qab rwb thaiv tsev kom tau txais cov hlau nplaum samarium cobalt thiab cov qauv dhau los. Nyob rau hauv sib piv, tam sim no invention yog formulated nrog erbium caij, lub microstructure ntawm lub samarium cobalt alloy yog ib tug cellular qauv, lub coercive quab yuam ntawm lub alloy los ntawm pinning ntawm lub cellular qauv mus rau lub domain phab ntsa, thiab grain ciam teb precipitates kuj muaj. ntsia hlau nyob rau hauv lub domain phab ntsa. Cov ntsiab lus zirconium nyob rau hauv qhov kev tsim tawm tam sim no yog 2.4 feem pua ​​​​, uas siab dua li ntawm cov qauv ib txwm muaj Cov ntsiab lus ntawm 13 feem pua, zirconium txhawb kev tsim cov flaky 2: 17 theem, thiab qhov nce ntawm flaky theem yog qhov zoo rau kev txhim kho kev sib koom tes. .

Los ntawm kev sib ntxiv ntawm erbium thiab qhov tsim nyog piv ntawm cov qauv, qhov sib xyaw ua ke quab yuam Hcj ntawm cov khoom npaj samarium cobalt hlau nplaum ncav cuag 27￣koe, uas yog ntau dua li lub zog quab yuam ntawm li 20K0e ntawm cov uas twb muaj lawm. formula, uas ua tau raws li qhov yuav tsum tau ntawm high-tech teb. Cov kev xav tau rau siab coercivity ntawm samarium cobalt hlau nplaum cov ntaub ntawv. Hauv kev tsim cov txheej txheem ntawm samarium cobalt cov khoom siv hlau nplaum ruaj khov ntawm cov khoom siv tam sim no, samarium cobalt alloy ingot yog pulverized los ntawm cov txheej txheem hydrogen crushing, thiab txoj kev tsis sib haum sintering yog siv los ua kom qhov kub thiab txias ntawm txhua qhov chaw kub hauv qhov cub sintering. tib yam los tsim ib qho microstructure ntau dua, Qhov no kuj txhim kho cov coercivity rau qee yam; tam sim no invention ua kev laus laus ntawm samarium cobalt billet ntawm qhov txias ceev qis dua li ntawm cov duab ua ntej, thiab los ntawm kev ua kom txias ceev, samarium cobalt alloy yog tag nrho yaj nyob rau hauv ib leeg, thiab cov microstructure zoo dua. Rau lub hom phiaj ntawm uniformity thiab loj txo, lub coercive quab yuam yog txhim kho, thiab rov qab magnetic teb thiab lwm yam demagnetization los ntawm sab nraud yog tiv thaiv.

Cov saum toj no yog txoj kev npaj ntawm samarium cobalt hlau nplaum. Yog tias koj xav paub ntau ntxiv, thov koj xav tiv tauj peb!