Za Magnets

Kodi Magnet a Neodymium ndi chiyani

Maginito a Neodymium (chidule: Maginito a NdFeb) ndi maginito amphamvu kwambiri okhazikika omwe amapezeka pamalonda, kulikonse padziko lapansi. Amapereka milingo yosayerekezeka ya maginito ndi kukana demagnetization poyerekeza ndi Ferrite, Alnico komanso maginito a Samarium-cobalt.
Maginito a Neodymium amasinthidwa molingana ndi mphamvu zawo zochulukirapo, zomwe zimagwirizana ndi maginito otuluka pa voliyumu ya unit. Makhalidwe apamwamba amasonyeza maginito amphamvu. Kwa maginito a sintered NdFeB, pali gulu lodziwika bwino padziko lonse lapansi. Makhalidwe awo amachokera ku 28 mpaka 55. Chilembo choyamba N pamaso pa mfundo ndi yochepa kwa neodymium, kutanthauza maginito a sintered NdFeB.
Maginito a Neodymium ali ndi remanence yapamwamba, yokakamiza kwambiri komanso mphamvu zamagetsi, koma nthawi zambiri amachepetsa kutentha kwa Curie kuposa mitundu ina ya maginito. Ma aloyi apadera a neodymium maginito omwe amaphatikizapo terbium ndi
Dysprosium apangidwa omwe ali ndi kutentha kwa Curie kwapamwamba, kuwalola kulekerera kutentha kwakukulu.Gome ili m'munsiyi likuyerekeza ndi maginito a maginito a neodymium ndi mitundu ina ya maginito okhazikika.

Kodi maginito a neodymium amagwiritsidwa ntchito chiyani? Chifukwa cha maginito a neodymium mwamphamvu kwambiri, kugwiritsa ntchito kwawo ndikofala kwambiri. Amapangidwira zosowa zamaofesi, zamalonda ndi zamakampani, zomwe zimagwiritsidwa ntchito mumitundu yama turbines amphepo,
olankhula, zomvera m'makutu ndi ma mota, maikolofoni, masensa, chithandizo chamankhwala, kulongedza, zida zamasewera, zaluso ndi minda ya ndege.

Kodi maginito a Ferrite ndi chiyani

Maginito a Ferrite kuphatikiza maginito olimba a ferrite ndi maginito ofewa.
Ma ferrite olimba ali ndi mphamvu zambiri, choncho ndizovuta kuti awononge maginito. Amagwiritsidwa ntchito kupanga maginito okhazikika opangira ntchito monga firiji, zokuzira mawu, ndi ma mota ang'onoang'ono amagetsi ndi zina zotero.

Ma ferrite ofewa amakhala ndi mphamvu zochepa, kotero amasintha mosavuta maginito awo ndikuchita ngati ma conductor a maginito. Amagwiritsidwa ntchito m'makampani amagetsi kuti apange maginito opangira maginito otchedwa ferrite cores kwa ma inductors othamanga kwambiri, ma transfoma ndi tinyanga, komanso magawo osiyanasiyana a microwave.

Mafuta a Ferrite ndi otsika mtengo kwambiri, amakhala opangidwa ndi iron oxide, ndipo amalimbana bwino ndi dzimbiri.
Kodi Alnico Magnets Ndi Chiyani?
Maginito a Alnico ndi maginito osatha omwe amapangidwa makamaka ndi aluminiyamu, faifi tambala ndi cobalt koma amathanso kuphatikiza mkuwa, chitsulo ndi titaniyamu.
Amabwera mu isotropic, non-directional, kapena anisotropic, mono-directional, mawonekedwe. Akakhala ndi maginito, amakhala ndi mphamvu ya maginito ka 5 mpaka 17 kuwirikiza kawiri mphamvu ya maginito ya magnetite kapena lodestone, zomwe zimachitika mwachilengedwe zida za maginito zomwe zimakopa chitsulo.
Maginito a Alnico ali ndi kutentha kocheperako ndipo amatha kusinthidwa kuti agwiritsidwe ntchito pamatenthedwe apamwamba mpaka 930 ° F kapena 500 ° C. Amagwiritsidwa ntchito pomwe kukana kwa dzimbiri ndikofunikira komanso mitundu yosiyanasiyana ya masensa.

Kodi Magnet ya Samarium-cobalt (SmCo Magnet) ndi chiyani?

Maginito a samarium-cobalt (SmCo), mtundu wa maginito osowa padziko lapansi, ndi maginito amphamvu okhazikika opangidwa ndi zinthu ziwiri zofunika: Samarium ndi cobalt. mavoti ndi kukakamiza kwakukulu.
Zina mwazinthu za SmCo ndi:
Maginito a Samarium-cobalt amalimbana kwambiri ndi demagnetization.
Maginitowa ali ndi kutentha kwabwino (kutentha kwambiri kwapakati pa 250 °C (523 K) ndi 550 °C (823 K); Kutentha kwa Curie kuchokera 700 °C (973 K) mpaka 800 °C (1,070 K).
Ndizokwera mtengo komanso zimatengera kusinthasintha kwamitengo (cobalt ndizovuta pamtengo wamsika).
SmCo maginito ndi kukana amphamvu dzimbiri ndi makutidwe ndi okosijeni kukana, nthawi zambiri safuna TACHIMATA ndipo chimagwiritsidwa ntchito kutentha ndi osauka ntchito. Iwo ndi opepuka, ndipo amakonda kusweka ndi kukwapula. Maginito a Samarium-cobalt ali ndi zinthu zopangira mphamvu zambiri (BHmax) zomwe zimachokera ku 14 megagauss-oersteds (MG·Oe) mpaka 33 MG·Oe, ndiye pafupifupi. 112 kJ/m3 mpaka 264 kJ/m3; malire awo amalingaliro ndi 34 MG · Oe, pafupifupi 272 kJ / m3.
Ntchito zina zikuphatikizapo:
1. Ma mota amagetsi apamwamba kwambiri omwe amagwiritsidwa ntchito m'makalasi opikisana kwambiri pamasewera a slotcar racingTurbomachinery.
2. Maginito oyenda-wave chubu kumunda.
3. Mapulogalamu omwe adzafunika kuti makina azigwira ntchito pa kutentha kwa cryogenic kapena kutentha kwambiri (kupitirira 180 ° C).
4. Mapulogalamu omwe magwiridwe antchito amafunikira kuti agwirizane ndi kusintha kwa kutentha.
5. Benchtop NMR spectrometers.
6. Ma encoder a rotary komwe amagwira ntchito ya maginito actuator.