ʻO nā pono a me nā pōʻino o Sm2Co17 a me SmCo5 mau mea magnetic mau loa

Hoʻohālikelike ʻia me SmCo5, kaSm2Co17Loaʻa iā ia nā pono penei:

1. ʻO ka maʻiʻo o ka cobalt a me ka samarium i loko o ke ʻano o Sm2Co17 mau mea paʻa mau mea haʻahaʻa haʻahaʻa ma mua o ka SmCo5 mau mea paʻa mau, e mālama nui i ke kumukūʻai o nā mea maka.No ka mea, ʻo ka samarium a me ka cobalt maka he mau metala laha loa, no laila, ʻoi aku ka haʻahaʻa o ke kumu kūʻai o Sm2Co17 mau mea magnet ma mua o SmCo5;

2. ʻO ka coefficient wela hoʻoheheʻe magnetic o Sm2Co17 mau mea hoʻoheheʻe mau loa e pili ana i -0.02% / ℃, hiki ke hana ma ka laulā o -60 ~ 350 ℃, kahi mea hiki ʻole ke hoʻohālikelike ʻia me SmCo5 mau mea magnetic mau loa;

He kiʻekiʻe ka mahana o Curie.ʻO ke kiko Curie o ka mea Sm2Co17 e pili ana i 840 ~ 870 ℃, a ʻo ka helu Curie o ka mea SmCo5 he 750 ℃.'O ia ho'i, 'oi aku ka pale o ka Sm2Co17 i nā wela ki'eki'e ma mua o ka SmCo5.Eia naʻe, ke hoʻohālikelike ʻia me SmCo5 mau mea magnetic, ʻoi aku ka paʻakikī o ke kaʻina hana o Sm2Co17.I mea e hoʻomaikaʻi ai i ka coercivity, pono ia e ʻelemakule no nā manawa he nui, a ʻoi aku ka kiʻekiʻe o ke kaʻina hana ma mua o SmCo5.Ma ka magnet mau loa, ʻo Sm2Co17 mea magnetic kahi ʻano o ka magnet mau loa me ka wela lawelawe kiʻekiʻe.

Ma muli o ka piʻi nui ʻana o ka noi no nā magnet mau loa i hoʻohana ʻia ma luna o 400 ℃ i ka aerospace a me nā ʻoihana uila, hoʻokipa ʻia nā mea magnetic mau me ka mahana lawelawe kiʻekiʻe a me ka hana piha maikaʻi loa e ka lehulehu.ʻOiai ʻo ka mahana hana o Alnico permanent magnet ma luna o 500 ℃, haʻahaʻa loa kona coercivity intrinsic e hoʻokō i nā koi o ka hoʻohana pono.NdFeb kakaikahi honua mau loa magnet kino he kiʻekiʻe coercivity a me ka maikaʻi piha hana, akā, i ka hoʻohana wela hiki ole e hoʻokō i luna koi, no ka haʻahaʻa Curie wela a me ka nui wela coefficient.Ma muli o kāna hana maikaʻi loa, ua hoʻohana nui ʻia ʻo Sm2Co17 mau mea magnetik i ka mīkini, ka mea hana pololei, ka mīkini microwave, ka mea ʻike, ka mea ʻike a me nā ʻenehana kiʻekiʻe.