Neodymium Magnet, tseem hu ua cov hlau nplaum tsis tshua muaj ntiaj teb

Neodymium hlau nplaum, tseem hu ua cov hlau nplaum tsis tshua muaj ntiaj teb, tau dhau los ua qhov tseem ceeb hauv ntau qhov chaw ntawm cov cuab yeej siv niaj hnub no vim lawv cov khoom sib nqus tshwj xeeb.Cov hlau nplaum no tau siv dav hauv ntau yam kev lag luam, nrog rau cov khoom siv hluav taws xob, khoom siv kho mob, aerospace, thiab lub zog tauj dua tshiab.Tsis ntev los no, ib pab neeg ntawm cov kws tshawb fawb los ntawm University of Tokyo tau ua qhov kev tshawb pom tshiab uas tuaj yeem txhim kho kev ua tau zoo ntawm cov hlau nplaum neodymium.

Hauv kev tshawb fawb luam tawm nyob rau hauv phau ntawv journal Nature, cov kws tshawb fawb tau tshaj tawm tias lawv tau ua tiav cov hlau nplaum neodymium nrog kev coercivity ntau dua li yav dhau los qhia neodymium hlau nplaum.Coercivity yog ib qho kev ntsuas ntawm cov hlau nplaum lub peev xwm los tiv thaiv demagnetization, thiab siab coercivity yog qhov tseem ceeb rau kev ua haujlwm ruaj khov ntawm ntau yam khoom siv, nrog rau cov tshuab hluav taws xob thiab cov tshuab hluav taws xob.

Txhawm rau ua tiav qhov kev ua tiav no, pab pawg tau siv cov txheej txheem hu ua spark plasma sintering, uas suav nrog cov cua kub ceev thiab txias ntawm cov hmoov sib tov ntawm neodymium thiab hlau boron.Cov txheej txheem no yuav pab ua kom haum cov nplej sib nqus hauv cov khoom siv, uas nyeg nce ntxiv cov hlau nplaum tus hlau.

Cov hlau nplaum tshiab tsim los ntawm cov kws tshawb fawb tau muaj kev sib koom tes ntawm 5.5 tesla, uas yog kwv yees li 20% siab dua li cov ntaub ntawv yav dhau los.Qhov kev txhim kho tseem ceeb hauv kev sib koom tes no tuaj yeem muaj ntau yam kev siv hauv kev siv hluav taws xob, uas yog siv rau hauv ntau qhov kev lag luam, suav nrog tsheb thiab aerospace.

Cov kws tshawb fawb kuj tau sau tseg tias cov hlau nplaum tshiab tau tsim los siv cov txheej txheem yooj yim thiab ua kom muaj zog, uas tuaj yeem ua kom yooj yim dua thiab muaj txiaj ntsig zoo los tsim cov hlau nplaum neodymium ua tau zoo yav tom ntej.Qhov no tuaj yeem ua rau muaj kev txhim kho ntau dua thiab txhim khu kev qha hluav taws xob thiab cov tshuab hluav taws xob, uas yuav muaj kev cuam tshuam loj rau ntau qhov kev lag luam thiab tuaj yeem pab txhawb kev loj hlob ntawm cov khoom siv hluav taws xob tauj dua tshiab.

Hauv kev xaus, qhov kev tsis ntev los no ntawm kev tshawb fawb neodymium hlau nplaum los ntawm University of Tokyo yog ib qho kev txhim kho tseem ceeb uas tuaj yeem muaj kev cuam tshuam loj heev rau ntau qhov chaw ntawm cov cuab yeej siv niaj hnub no.Lub peev xwm los tsim cov hlau nplaum neodymium ua haujlwm siab siv cov txheej txheem yooj yim thiab scalable tuaj yeem hloov kho lub tshuab hluav taws xob thiab lub tshuab hluav taws xob kev lag luam thiab pab txhawb kev loj hlob ntawm cov khoom siv hluav taws xob tauj dua tshiab.