Waa maxay heerkulka xadka ee magnets cobalt samarium?

Samarium cobalt magnets (SmCo) ayaa inta badan loo isticmaali jiray ikhtiyaarka jawiga xad dhaafka ah ee iska caabbinta heerkulka sare. Laakiin waa maxay heerkulka xadka ee samarium cobalt? Su'aashani waxay noqonaysaa mid aad iyo aad muhiim u ah marka tirada goobaha codsiga ee xad-dhaafka ah ay korodho. Heerkulka Curie ee walxaha ferromagnetic inta badan waa xadka sare ee heerkulka codsiga. Heerkulkan ka sarreeya, magnetku wuxuu ka beddelaa xaalad ferromagnetic wuxuuna u beddelaa xaalad paramagnetic, oo hadda ma laha astaamo birlabeed oo xooggan. Tusaale ahaan, heerkulka Curie ee 2:17 SmCo waa qiyaastii 820 ° C, kan 1:5 SmCo waa qiyaastii 750 ° C. Halabuurka iyo qaab-dhismeedka birlabku had iyo jeer way kala duwan yihiin, heerkulka Curie wax yar ayuu ka duwan yahay, laakiin guud ahaan waa xadkan. Sida sawirka 1 ka muuqata.

Jaantuska 1. Heerkulka Curie ee agabka birlabeedka joogtada ah ee kala duwan

Si kastaba ha ahaatee, codsiga dhabta ah, magnets SmCo waxay u nugul yihiin luminta birlab aan la soo celin karin marka heerkulku aad uga hooseeyo heerkulka Curie. Heerkulka ugu sarreeya (Tmax) ee SmCo waxa xaddidaya isku-xidhka heerkulka isku-xidhka iyo goobta shaqada ee ay sababtay qaabka kala duwan ee birlabeedka. Haddii qalooca BH ee rubuci labaad loo isticmaalo sidii xariiq toosan oo ah heerka xukunka (Chen, JAP, 2000), Tmax ee magnets-ka caadiga ah ee SmCo kama badna 350°C. Sida ku cad Jaantuska 2, sifooyinka magnetic aadka u fiican ee 32H magnet at 20 °C waa Br≥11.3kGs, Hcj≥28kOe, Hk≥21kOe, iyo BHmax≥30.5kOe. Si kastaba ha ahaatee, isku xidhka heerkulka β (20-350 °C) ee qasabka gudaha Hcj waa 0.042%, iyo qalooca BH weli way adag tahay in lagu ilaaliyo xariiq toosan oo qumman ee rubuci labaad ee 350 °C.

Jaantuska 2, qalooca heerkulka 32H.

Hangzhou Magnet Power Co.Ltd waxay samaysay taxane heerkul sare u adkaysta SmCo magnets (T series) min 350 °C ilaa 550 °C. Sida ku cad sawirka 3, magnet-yadani waxay ka yimaadeen T350 oo leh Tmax 350 °C ilaa T550 oo leh Tmax 550 °C. Wax qabad gaar ah, fadlan tixraac isku xirka shabakadahttps://www.magnetpower-tech.com/t-series-sm2co17-smco-magnet-supplier-product/.Maaddadani waxay ku habboon tahay codsiyada heerkulka sare sida warshadaha kiimikada, marawaxadaha iyo wixii la mid ah.