samarium cobalt hlau nplaum

samarium cobalt hlau nplaum

Sm2Co17-raws li cov hlau nplaum txuas ntxiv ua lub luag haujlwm tsis tuaj yeem hloov pauv hauv kev lag luam hlau nplaum tas mus li vim lawv qhov tshwj xeeb kub kub sib nqus cov khoom thiab cov khoom sib nqus zoo dua. Lawv tau dav siv nyob rau hauv high-ceev motors, hluav taws xob kev sib txuas lus, thiab aerospace kev siv. Cov khoom siv hluav taws xob muaj zog hlau nplaum yog qhov tseem ceeb rau kev ua kom cov miniaturization thiab efficiency ntawm cov khoom siv. Yog li ntawd, kev ua tau zoo SmCo hlau nplaum yog ib lub hom phiaj txij thaum pib ntawm Sm2Co17.

Sm2Co17-raws li cov hlau nplaum yog tsim los ntawm Samarium, Cobalt, Hlau, Tooj, thiab Zirconium. Cov ntsiab lus ntawm txhua lub ntsiab lus muaj qhov sib txawv ntawm kev ua haujlwm sib nqus. Lub microstructure ntawm Sm2Co17-raws li cov hlau nplaum yog cov qauv ntawm tes uas muaj 2:17R cell theem, 1:5H cell ciam theem, thiab Zr-rich 1:3R platelet theem. Lub 2: 17R cell yog ib theem rhombohedral nrog nws cov axis ntev raws li qhov yooj yim magnetization axis. Nws muaj Fe-nplua nuj Th2Zn17-hom rhombohedral Sm2(Co, Fe)17 ua lub ntsiab theem. Qhov no 2:17R lub ntsiab theem muab siab saturation magnetization (Ms) rau cov hlau nplaum, uas thaum kawg txiav txim siab remanence (Br). 1: 5H theem yog Cu-nplua nuj CaCu5- hom Sm (Co, Cu) 5 cell ciam theem uas ua rau kom cov coercivity ntawm cov hlau nplaum los ntawm domain phab ntsa pinning. Zr-nplua nuj 1: 3R platelet theem yog oriented perpendicular mus rau c-axis thiab txuas mus thoob plaws cellular qauv. Cov theem no tso cai rau tooj liab diffuse mus rau hauv lub cell ciam theem, nthuav lub cellular theem thiab ua rau lub cell ciam theem lub domain phab ntsa zog, li no pab tau coercivity.

Ntxiv rau qhov loj ntawm lub cellular theem, qhov ntau, thickness, thiab muaj pes tsawg leeg ntawm lub cell ciam theem kuj cuam tshuam rau tag nrho cov khoom sib nqus ntawm cov hlau nplaum. Tus nqi theoretical ntawm cov hlau nplaum tas mus li qhov khoom siv hluav taws xob siab tshaj plaws yog proportional rau lub square ntawm nws saturation magnetization (Ms). Txhim kho Ms yog qhov tseem ceeb rau kev ua tiav cov khoom siv hluav taws xob siab. Raws li tus qauv-sensitive parameter, cov khoom siv hluav taws xob kuj tuaj yeem txhim kho los ntawm kev ua kom zoo ntawm cov qauv ntawm tes. Hauv lwm lo lus, Ms thiab cov khoom siv hluav taws xob ntawm Samarium Cobalt hlau nplaum tuaj yeem txhim kho tau zoo los ntawm kev sib xyaw kom zoo thiab hloov kho cov txheej txheem kho cua sov. Cov ntsiab lus Fe hauv Sm2 (Co, Fe) 17 theem tseem ceeb ua haujlwm los txhim kho Ms thiab Br ntawm cov hlau nplaum. Lub saturation magnetization (Js) ntawm theem Sm2Co17 yog kwv yees li 12 kGs. Raws li cov ntsiab lus Fe nce, Js ntawm Sm2(Co0.8Fe{{10}}.2)17 thiab Sm2(Co0.7Fe0.3)17 tuaj yeem ncav cuag 13.5 kGs thiab 16.3 kGs, feem. Txawm li cas los xij, yog tias cov ntsiab lus Fe hauv Sm (Co, Fe, Cu, Zr) z tshaj 25 wt%, cov qauv cellular loj hlob txawv txav. Cov qauv ntawm cov cellular oversized tsis zoo cuam tshuam rau nws homogeneity, uas ua rau muaj kev poob qis hauv coercivity thiab squareness ntawm demagnetization nkhaus.

Nrog rau kev siv dav hlau milling thiab kho cua sov hloov kho, SDM tau ua tiav cov khoom loj ntawm SmCo hlau nplaum. Lawv qhov kev ua tau zoo sib nqus yog piv rau Electron Energy Corporation (EEC) thiab Arnold Magnetic Technologies.