Imagnethi ye-cobalt yaseSamarium (i-SmCo) yayihlala isetyenziswa njengenketho yeemeko ezingqongileyo ezigqithisileyo zokumelana nobushushu obuphezulu. Kodwa yintoni iqondo lokushisa elilinganiselwe le-samarium cobalt? Lo mbuzo uba ngakumbi kwaye ubaluleke ngakumbi njengoko inani leemeko zezicelo ezigqithisileyo lisanda. Ubushushu beCurie bezinto zeferromagnetic budla ngokuba ngumda ophezulu wobushushu besicelo. Ngaphezulu kobu bushushu, umazibuthe uyatshintsha ukusuka kwimo ye-ferromagnetic ukuya kwimeko yeparamagnetic, kwaye akasenazo iimpawu ezinamandla zemagnethi. Umzekelo, ubushushu beCurie be-2:17 SmCo bumalunga nama-820°C, kwaye elo le-1:5 SmCo limalunga ne-750°C. Ukubunjwa kunye nokwakheka kweemagnethi zihlala zihluke, ubushushu beCurie buhluke kancinane, kodwa ngokuqhelekileyo kuloluhlu. Njengoko uMfanekiso 1 ubonisiwe.
Umzobo 1. Ubushushu beCurie bezinto ezahlukeneyo zemagnethi ezisisigxina
Nangona kunjalo, kwisicelo sokwenyani, iimagnethi ze-SmCo zithambekele ekulahlekeni kwemagnethi engenakubuyiselwa xa ubushushu bungaphantsi kakhulu kunobushushu beCurie. Ubushushu obukhulu (Tmax) be-SmCo bukhawulelwe ngumlinganiso wobushushu wokunyanzeliswa kunye nendawo yokusebenza ebangelwa yimilo eyahlukeneyo yeemagnethi. Ukuba i-BH ijika kwi-quadrant yesibini isetyenziswe njengomgca othe ngqo njengomgangatho wokugweba (i-Chen, i-JAP, i-2000), i-Tmax yeemagnethi ze-SmCo ezisetyenziswa ngokuqhelekileyo ayidluli i-350 ° C. Njengoko kuboniswe kwi-Figure 2, iimpawu ezigqwesileyo zamagnetic ze-32H umazibuthe kwi-20 °C yi-Br≥11.3kGs, i-Hcj≥28kOe, i-Hk≥21kOe, kunye ne-BHmax≥30.5kOe. Nangona kunjalo, i-coefficient yeqondo lokushisa β (20-350 ° C) ye-intrinsic coercivity Hcj yi-0.042%, kwaye i-curve yayo ye-BH kusenzima ukugcina umgca othe ngqo kwi-quadrant yesibini kwi-350 ° C.
Umzobo 2, ijika lobushushu le-32H.
I-Hangzhou Magnet Power Co.Ltd iphuhlise uthotho lweemagnethi zeSmCo ezixhathisa ubushushu obuphezulu (T series) ukusuka kuma-350 °C ukuya kuma-550 °C. Njengoko kubonisiwe kuMfanekiso 3, ezi magnethi zisuka kwi-T350 ene-Tmax ye-350 °C ukuya kwi-T550 ene-Tmax ye-550 °C. Ngomsebenzi othile, nceda ujonge ikhonkco lewebhusayithihttps://www.magnetpower-tech.com/t-series-sm2co17-smco-magnet-supplier-product/.Le nto ifanelekile kwizicelo zokushisa eziphezulu ezifana neshishini lemichiza, i-turbine kunye nokunye.
Figure 3 Grades kunye neegophe lobushushu eliphezulu SmCo.
Ixesha lokuposa: Apr-23-2023
