He aha ka palena wela o ka samarium cobalt magnets?

Ua hoʻohana pinepine ʻia ka Samarium cobalt magnets (SmCo) ma ke ʻano he koho no nā kaiapuni koʻikoʻi no kona kūpaʻa kiʻekiʻe. Akā he aha ka palena wela o ka samarium cobalt? E lilo ana kēia nīnau i mea koʻikoʻi i ka piʻi ʻana o ka nui o nā kaiapuni noiʻi loa. ʻO ka mahana Curie o nā mea ferromagnetic ka mea maʻamau ka palena kiʻekiʻe o ka mahana noi. Ma luna o kēia mahana, hoʻololi ka magnet mai kahi ferromagnetic state i kahi paramagnetic state, a ʻaʻohe ona mau hiʻohiʻona ikaika. No ka laʻana, ʻo ka mahana Curie o 2:17 SmCo ma kahi o 820°C, a ʻo ka 1:5 SmCo ma kahi o 750°C. ʻOkoʻa mau ka haku mele ʻana a me ke ʻano o nā magnet, ʻokoʻa iki ka mahana o Curie, akā maʻamau i kēia pae. E like me ke Kii 1 i hoikeia.

Kiʻi 1. ʻO ka mahana Curie o nā mea magnet mau loa

Eia nō naʻe, i ka noi maoli, hiki i nā SmCo magnet ke hoʻololi ʻole i ka nalowale i ka wā i haʻahaʻa loa ka mahana ma mua o ka mahana Curie. ʻO ka wela kiʻekiʻe (Tmax) o SmCo ua kaupalena ʻia e ka coefficient wela o ka coercivity a me ka wahi hana i hana ʻia e nā ʻano like ʻole o nā magnet. Inā hoʻohana ʻia ka pihi BH ma ka ʻaoʻao ʻelua ma ke ʻano he laina pololei e like me ke kūlana hoʻokolokolo (Chen, JAP, 2000), ʻaʻole ʻoi aku ka Tmax o nā mea hoʻohana maʻamau SmCo ma mua o 350°C. E like me ka mea i hōʻike ʻia ma ke Kiʻi 2, ʻo nā waiwai magnetic maikaʻi loa o 32H magnet ma 20 °C he Br≥11.3kGs, Hcj≥28kOe, Hk≥21kOe, a me BHmax≥30.5kOe. Eia nō naʻe, ʻo ka coefficient wela β (20-350 °C) o kona intrinsic coercivity Hcj ʻo 0.042%, a paʻakikī mau kāna pihi BH e mālama i kahi laina pololei loa ma ka quadrant lua ma 350 °C.

Helu 2, ka piko wela o 32H.

Ua hoʻomohala ʻo Hangzhou Magnet Power Co.Ltd i kahi moʻo kiʻekiʻe wela wela SmCo magnets (T series) mai 350 °C a 550 °C. E like me ka mea i hōʻike ʻia ma ke Kiʻi 3, ʻo kēia mau magnet mai ka T350 me kahi Tmax o 350 °C a i ka T550 me kahi Tmax o 550 °C. No ka hana kiko'ī, e nānā i ka loulou pūnaewelehttps://www.magnetpower-tech.com/t-series-sm2co17-smco-magnet-supplier-product/.Ua kūpono kēia mea no nā noi wela kiʻekiʻe e like me ka ʻoihana kemika, turbine a pēlā aku.