Ka hoʻohana ʻana i nā mea magnet ferrite

Ka hoʻohana ʻana i nā mea magnet ferrite

ʻO ka mea magnet Ferrite he ferromagnetic metala oxide. Ma ke ʻano o nā waiwai uila, ʻo ka resistivity o ka ferrite ʻoi aku ka nui ma mua o nā mea metala a me nā mea hoʻoheheʻe magnetic, a loaʻa pū kekahi nā hana dielectric kiʻekiʻe. Hōʻike kiʻekiʻe ka hana magnetic o ka ferrite ka manaʻo magnetic ma nā alapine kiʻekiʻe. No laila, ferrite magnet mea ua lilo i mea maʻamau non-metallic magnetic no ke alapine kiʻekiʻe a nāwaliwali palena manawa. Ma muli o ka haʻahaʻa o ka ikehu magnetic i mālama ʻia no kēlā me kēia leo o ferrite a me ka haʻahaʻa saturation magnetization, ferrites ua kaupalena i loko nā noi e koi ana i ka ikehu ikehu kiʻekiʻe ma ke alapine haʻahaʻa a me ke kiʻekiʻe mana kaohi.

Hana ʻia nā magnet Ferrite e ka pauka mea hao. Hoʻokaʻawale ʻia lākou i ʻelua ʻano: barium (Ba) a me strontium (Sr), a ua maheleia i elua ano: anisotropic a me isotropic. He a paʻa paʻa ʻaʻole maʻalahi ke hoʻoheheʻe ʻia a ʻaʻole maʻalahi ke ʻino. ʻO ka mea, me ka wela hana o 250 degere Celsius, he ʻano paʻakikī a palupalu. Hiki ke ʻoki a hana ʻia me nā mea hana e like me ke one daimana, a hiki ke hana ʻia i ka manawa hoʻokahi me ka ʻōpala i hana ʻia. Hoʻohana nui ʻia ia mau huahana i nā mīkini magnet mau loa (Motor) a me nā mea ʻōlelo (Speaker) a me nā kahua ʻē aʻe. Hoʻohana nui ʻia i ke kamaʻilio, hoʻolaha, helu, hoʻokele ʻakomi, hoʻokele radar, hoʻokele lewa, ukali kamaʻilio, ana mea kani, paʻi ʻana, mālama pollution, biomedicine, kaʻa holo wikiwiki, etc.

No ka Ferrite ka waeʻano o semiconductors i ka uila, no laila ua kapa ʻia ʻo ia he semiconductors magnetic. ʻO Magnetite kahi ferrite maʻalahi.

1. Loaʻa i nā ferrite mau ka barium ferrite (BaO.6Fe2O3) a me strontium ferrite (SrO.6Fe2O3). ʻO ke kūpaʻa kiʻekiʻe, no ka māhele semiconductor, no laila he liʻiliʻi ka hoʻohana ʻana i kēia manawa, He nui ka ikaika coercive, hiki ke hoʻohana maikaʻi ʻia i ke kaapuni magnetic kaapuni, He mea kūikawā ia no nā mea hana liʻiliʻi a me nā magnet mau loa. ʻAʻole i loko nā metala makamae e like me ka nickel a me ka cobalt. Maikaʻi ka mea maka, ka ʻAʻole paʻakikī ke kaʻina hana, a haʻahaʻa ke kumukūʻai. Hiki ke pani iā ​​AlNiCo mau loa magnet. He haʻahaʻa kona huahana ikehu hoʻohālikelike kiʻekiʻe, no laila ʻoi aku ka nui ma mua o metala metala ma lalo o nā kūlana ikehu magnetic. Kona wela ʻilihune ka paʻa ʻana, palupalu a palupalu kona ʻano, ʻaʻole hiki ke kūpaʻa ka hopena a me ka manaʻo. ʻAʻole kūpono no ke ana ʻana i nā mea hana a me nā mea hana magnetic me nā koi koʻikoʻi. ʻO nā huahana o ka ferrite magnet mau loa ka mea nui moʻo anisotropic. Hiki ke hoʻohana ʻia e hana i ka mea hoʻomaka magnet mau loa nā kaʻa, nā ʻenekini paʻa mau, nā mea hoʻopaʻa magnet mau, mau loa ka hoʻokuʻu ʻia ʻana o ka magnet, nā bearings thrust, nā mea hoʻokaʻawale magnetic broadband, nā mea haʻiʻōlelo, nā lako microwave, nā pepa lapaʻau magnetic, nā mea hoʻolohe, etc.

2. Loaʻa i nā ferrites magnetic palupalu ka manganese ferrite (MnO.Fe2O3), zinc ferrite (ZnO.Fe2O3), nickel zinc ferrite (Ni-Zn.Fe2O4), manganese magnesium zinc ferrite (Mn- Mg-Zn.Fe2O4) a me nā mea hoʻokahi a i ʻole ferrites nui-component. ʻOi aku ka nui o ka resistivity ma mua o ka metala mea magnetic, a loaʻa iā ia kahi hana dielectric kiʻekiʻe. No laila, ferrites i loaʻa nā waiwai ferromagnetic a me ferroelectric pū kekahi Ua puka mai ka waiwai ferromagnetic a me ka piezoelectric. Ma nā alapine kiʻekiʻe, kona ʻoi aku ka kiʻekiʻe o ka magnetic permeability ma mua o nā mea magnetic metala, me nā nickel-iron alloys a me senddust. Hiki ke hoʻohana ʻia ma ke alapine mai kekahi mau kilohertz a hiki i nā haneli megahertz. ʻO ka hana ʻana o ka ferrite pili i ka hana seramika maʻamau, no laila maʻalahi ke kaʻina hana, a he nui mālama ʻia nā metala makamae, a haʻahaʻa ke kumukūʻai.

ʻO ka saturation magnetic flux density o He haʻahaʻa loa ka ferrite, maʻamau he 1/3-1/5 wale nō o ka hao. He haʻahaʻa ko Ferrite hoʻopaʻa ʻana i ka ikehu magnetic no kēlā me kēia ʻāpana, e kaupalena ana i kona hoʻohana ʻana ma ka haʻahaʻa nā alapine, nā au kiʻekiʻe, a me nā palena kaha kiʻekiʻe i kahi kiʻekiʻe magnetic pono ka ikehu. He kūpono ia no ke alapine kiʻekiʻe, ka mana haʻahaʻa a me ka ili kahua uila nawaliwali. Hiki ke hoʻohana ʻia ka nickel zinc ferrite ma ke ʻano he antenna pole a me ke alapine waena ma ka lekiō, a Hiki ke hoʻohana ʻia ka manganese zinc ferrite e like me ka laina transtransformer core ma ke TV mea hoʻokipa. Eia kekahi, hoʻohana ʻia nā ferrite palupalu e hoʻohui i nā mea ʻike a me nā cores kānana ma nā laina kamaʻilio. Ua loaʻa nā transducers hoʻopaʻa leo magnetic kiʻekiʻe hoʻohana ʻia no nā makahiki he nui.