Kodi malire a kutentha kwa maginito a samarium cobalt ndi ati?

Maginito a Samarium cobalt (SmCo) nthawi zambiri amagwiritsidwa ntchito ngati njira yopangira malo ovuta kwambiri chifukwa cha kukana kwake kutentha kwambiri. Koma kodi malire a kutentha kwa samarium cobalt ndi chiyani? Funsoli limakhala lofunika kwambiri pamene chiwerengero cha malo ogwiritsira ntchito kwambiri chikuwonjezeka. Kutentha kwa Curie kwa zida za ferromagnetic nthawi zambiri kumakhala malire apamwamba a kutentha kwa ntchito. Pamwamba pa kutentha kumeneku, maginito amasintha kuchoka ku ferromagnetic state kupita ku paramagnetic state, ndipo alibenso mphamvu zamaginito. Mwachitsanzo, kutentha kwa Curie kwa 2:17 SmCo kuli pafupifupi 820°C, ndipo kwa 1:5 SmCo kuli pafupifupi 750°C. Mapangidwe ndi mawonekedwe a maginito nthawi zonse amakhala osiyana, kutentha kwa Curie kumakhala kosiyana pang'ono, koma nthawi zambiri kumakhala motere. Monga Chithunzi 1 chasonyezedwa.

Chithunzi 1. Curie kutentha kwa zipangizo zosiyanasiyana okhazikika maginito

Komabe, mu ntchito yeniyeni, SmCo maginito sachedwa sizingasinthe maginito imfa pamene kutentha ndi otsika kwambiri kuposa Curie kutentha. Kutentha kwakukulu (Tmax) kwa SmCo kumakhala kochepa chifukwa cha kutentha kwa coercivity ndi malo ogwirira ntchito chifukwa cha mawonekedwe osiyanasiyana a maginito. Ngati BH pamapindikira mu quadrant yachiwiri ntchito ngati mzere wolunjika monga muyezo chiweruzo (Chen, JAP, 2000), ndi Tmax wa ambiri ntchito maginito SmCo si upambana 350 ° C. Monga momwe tawonetsera pa Chithunzi 2, maginito abwino kwambiri a 32H maginito pa 20 °C ndi Br≥11.3kGs, Hcj≥28kOe, Hk≥21kOe, ndi BHmax≥30.5kOe. Komabe, kutentha kokwanira β (20-350 °C) kwa kukakamiza kwake kwamkati Hcj ndi 0.042%, ndipo BH curve yake imakhala yovutabe kusunga mzere wowongoka mu quadrant yachiwiri pa 350 °C.

Chithunzi 2, kutentha kwapakati pa 32H.

Hangzhou Magnet Power Co.Ltd yapanga maginito a SmCo osagwirizana ndi kutentha kwambiri (T mndandanda) kuchokera pa 350 °C mpaka 550 °C. Monga tawonera pa Chithunzi 3, maginitowa akuchokera ku T350 yokhala ndi Tmax ya 350 °C mpaka T550 yokhala ndi Tmax ya 550 °C. Kuti mudziwe zambiri, chonde onani ulalo watsamba lawebusayitihttps://www.magnetpower-tech.com/t-series-sm2co17-smco-magnet-supplier-product/.Zinthuzi ndizoyenera kugwiritsa ntchito kutentha kwakukulu monga mafakitale a mankhwala, turbine ndi zina zotero.