Malunga neemagnethi

Yintoni iNeodymium Magnets

Imagnethi ye-Neodymium (isifinyezo: Imagnethi ye-NdFeb) zezona magnethi zomeleleyo ezisisigxina ezikhoyo kurhwebo, kuyo yonke indawo emhlabeni.Banikezela ngamanqanaba angenakulinganiswa emagnetism kunye nokuchasana nokukhutshwa kuzibuthe xa kuthelekiswa neFerrite, Alnico kunye neemagnethi zeSamarium-cobalt.
Imagnethi ye-Neodymium ihlelwa ngokowona mveliso wamandla aphezulu, onxulumene nemveliso yemagnethi yesixhobo somthamo weyunithi.Amaxabiso aphezulu abonisa iimagnethi ezinamandla.Kwimagnethi ye-NdFeB ene-sintered, kukho ulwahlulo olwamkelwa ngokubanzi lwamazwe ngamazwe.Amaxabiso abo asusela ku-28 ukuya kuma-55. Unobumba wokuqala N phambi kokuba amaxabiso abe mfutshane kwi-neodymium, okuthetha ukuba sintered NdFeB imagnethi.
Iimagnethi zeNeodymium zineremanence ephezulu, ukunyanzeliswa okuphezulu kakhulu kunye nemveliso yamandla, kodwa zihlala zisezantsi ubushushu beCurie kunezinye iintlobo zemagnethi.Ezikhethekileyo neodymium umazibuthe alloys ezibandakanya terbium kunye
i-dysprosium iye yaphuhliswa ezinobushushu obuphezulu beCurie, ivumela ukuba banyamezele amaqondo aphezulu aphezulu.Itheyibhile engezantsi ithelekisa ukusebenza kwemagnethi yemagnethi ye-neodymium kunye nezinye iintlobo zeemagnethi ezisisigxina.

Zisetyenziselwa ntoni imagnethi zeneodymium?Ngenxa yeemagnethi ze-neodymium ngamandla, ukusetyenziswa kwazo kubanzi kakhulu.Ziveliswa kwiofisi, iimfuno zorhwebo kunye nezoshishino, ezisetyenziswa kwiintlobo zeeinjini zomoya,
izithethi, ii-earphones kunye nee-motor, ii-microphone, i-sensor, unyango, ukupakishwa, izixhobo zemidlalo, ubugcisa kunye namabala okubhabha.

Yintoni iimagnethi zeFerrite

Iimagnethi zeFerrite ngaphandle kweemagnethi eziqinileyo zeferrite kunye neemagnethi ezithambileyo.
Iiferrite ezinzima zinokunyanzeliswa okuphezulu, ngoko kunzima ukwenza i-demagnetize.Zisetyenziselwa ukwenza iimagnethi ezisisigxina kwizicelo ezifana nefriji, isandisi-lizwi, kunye neenjini zombane ezincinci njalo njalo.

Iiferrite ezithambileyo zinokunyanzeliswa okuphantsi, ngoko ke zitshintsha ngokulula umazibuthe wazo kwaye zisebenze njengeekhonduki zamandla kazibuthe.Zisetyenziswa kumzi mveliso we-elektroniki ukwenza ii-cores zemagneti ezisebenzayo ezibizwa ngokuba zii-ferrite cores ze-high-frequency inductors, ii-antennas kunye nee-eriyali, kunye nezinto ezahlukeneyo ze-microwave.

Iikhompawundi zeFerrite zinexabiso eliphantsi kakhulu, zenziwe nge-iron oxide ubukhulu becala, kwaye zinokumelana nokugqwesa okugqwesileyo.
Yintoni iAlnico Magnets
Imagnethi yeAlnico ziimagnethi ezisisigxina ezenziwe ikakhulu yindibaniselwano yealuminium, nickel kunye necobalt kodwa zinokubandakanya ikopolo, intsimbi kunye netitanium.
Ziza kwi-isotropic, non-directional, okanye i-anisotropic, i-mono-directional, ifom.Xa sele benziwe umazibuthe, banamaxesha ama-5 ukuya kwali-17 kumandla kazibuthe wemagnethi okanye i-lodestone, eziye zenzeke ngokwendalo izinto zemagnethi ezitsala intsimbi.
Imagnethi ye-Alnico inomlinganiselo wobushushu obuphantsi kwaye inokulinganiswa ukunyuswa kwentsalela ephezulu ukuze isetyenziswe kwizicelo zobushushu obuphezulu ukuya kuma-930°F okanye ama-500°C.Zisetyenziswa apho ukuxhathisa kwe-corrosion kuyimfuneko kunye neentlobo ezahlukeneyo zeenzwa.

Yintoni iSamarium-cobalt Magnet (SmCo Magnet)

Imagnethi yesamarium–cobalt (SmCo) , uhlobo lwemagnethi yomhlaba enqabileyo, yimagnethi eyomeleleyo esisigxina eyenziwe ngezinto ezimbini ezisisiseko: Imagnethi yeSamarium kunye necobalt. iireyithingi kunye nokunyanzeliswa okuphezulu.
Ezinye iimpawu ze-SmCo zezi:
Iimagnethi zeSamarium-cobalt zixhathisa kakhulu kwi-demagnetization.
Ezi magnethi zinozinzo olulungileyo lobushushu (obona bushushu bokusebenza buphakathi kwe-250 °C (523 K) kunye ne-550 °C (823 K); ubushushu beCurie ukusuka kuma-700 °C (973 K) ukuya kuma-800 °C (1,070 K).
Ziyabiza kwaye zixhomekeke ekutshintsheni kwexabiso (i-cobalt inovakalelo lwexabiso lemarike).
Iimagnethi ze-SmCo zinokuxhathisa okuqinileyo kwi-corrosion kunye nokumelana ne-oxidation, ngokuqhelekileyo akufuneki ukuba zigqunywe kwaye zinokusetyenziswa ngokubanzi kubushushu obuphezulu kunye neemeko zokusebenza ezimbi.Zi-brittle, kwaye zivame ukuqhekeka kunye nokuqhekeka.Iimagnethi ze-Samarium-cobalt zinemveliso yamandla aphezulu (BHmax) ukusuka kwi-14 megagauss-oersteds (MG·Oe) ukuya kwi-33 MG·Oe, oko kukuthi.112 kJ/m3 ukuya ku-264 kJ/m3;umda wabo wethiyori yi-34 MG · Oe, malunga ne-272 kJ / m3.
Olunye usetyenziso lubandakanya:
1. Iinjini zombane eziphezulu ezisetyenziswa kwiiklasi ezikhuphisanayo ngakumbi kwi-slotcar racingTurbomachinery.
2. Imagnethi yasendle yetyhubhu ehambahambayo.
3. Ukusetyenziswa okuya kufuna ukuba inkqubo isebenze kumaqondo obushushu e-cryogenic okanye amaqondo obushushu ashushu kakhulu (ngaphezu kwe-180 °C).
4. Izicelo apho ukusebenza kufuneka kuhambelane nokutshintsha kweqondo lokushisa.
5. I-Benchtop NMR spectrometers.
6. Iikhowudi ze-Rotary apho zenza umsebenzi we-actuator magnetic.