About Magnets

Chii chinonzi Neodymium Magnets

Neodymium magineti (pfupiso: NdFeb magineti) ndiwo akasimba echigarire magineti anotengeswa, kwese kwese pasirese. Vanopa zvisingaenzaniswi mazinga emagnetism uye kuramba kune demagnetization kana ichienzaniswa neFerrite, Alnico uye kunyange Samarium-cobalt magineti.
Neodymium magineti akaiswa mugiredhi zvinoenderana neawo akawanda simba chigadzirwa, ayo ane hukama neiyo magineti flux kubuda pavhoriyamu yeyuniti. Hunhu hwepamusoro hunoratidza magineti akasimba. Kune sintered NdFeB magineti, kune inozivikanwa zvakanyanya pasi rose kupatsanura. Tsika dzavo dzinobva pa 28 kusvika pa 55. Vara rekutanga N risati rakosha ipfupi kune neodymium, zvichireva kuti sintered NdFeB magineti.
Neodymium magineti ane remanence yakakwirira, yakanyanya kumanikidza uye chigadzirwa chesimba, asi kazhinji inodzika tembiricha yeCurie kupfuura mamwe marudzi emagineti. Special neodymium magineti alloys anosanganisira terbium uye
Dysprosium dzakagadzirwa dzine tembiricha yepamusoro yeCurie, ichivabvumira kushivirira tembiricha yepamusoro.Tafura iri pazasi inoenzanisa kuita kwemagineti kweneodymium magineti nemamwe marudzi emagineti echigarire.

Chii chinoshandiswa neodymium magineti? Nekuda kweneodymium magineti zvakanyanya, mashandisiro awo akanyanya kuwanda. Izvo zvinogadzirwa zvehofisi, zvekutengesa uye zveindasitiri zvinodiwa, izvo zvinoshandiswa mumhando dzemhepo turbines,
vatauri, mahedhifoni uye mota, maikorofoni, masensa, kurapwa, kurongedza, midziyo yemitambo, hunyanzvi uye nhandare dzendege.

Chii chinonzi Ferrite Magnets

Ferrite Magnets kunze kweakaoma ferrite magineti uye magineti akapfava.
Hard ferrites ane high coercivity, saka zvakaoma kuti demagnetize. Iwo anoshandiswa kugadzira magineti echigarire ezvishandiso zvakaita sefiriji, magudzanzwi, uye madiki emagetsi mota uye zvichingodaro.

Maferi akapfava ane yakaderera coercivity, saka anochinja nyore magineti uye kuita semaconductor emagineti minda. Iwo anoshandiswa muindasitiri yemagetsi kugadzira anoshanda magineti cores anonzi ferrite cores epamusoro-frequency inductors, transformers uye antennas, uye mune akasiyana microwave zvikamu.

Ferrite makomisheni mutengo wakaderera zvakanyanya, uchigadzirwa neakawanda iron oxide, uye ane yakanakisa corrosion resistance.
Chii chinonzi Alnico Magnets
Alnico magineti magineti echigarire ayo anonyanya kugadzirwa nemusanganiswa wealuminium, nickel uye cobalt asi anogona zvakare kusanganisira mhangura, iron uye titanium.
Ivo vanouya mune isotropic, isiri-directional, kana anisotropic, mono-directional, fomu. Kana yangoitwa magineti, ine kashanu kusvika kagumi nenomwe simba remagineti remagineti kana lodestone, izvo zvinongoitika zvemagineti zvinhu zvinokwezva iron.
Alnico magineti ane tembiricha yakaderera coefficient uye inogona kuverengerwa yakakwira yakasara induction kuti ishandiswe mukupisa kwekushisa kwepamusoro kusvika 930 ° F kana 500 ° C. Iwo anoshandiswa apo corrosion resistance inodiwa uye nemhando dzakasiyana dze sensors.

Chii chinonzi Samarium-cobalt Magnet (SmCo Magnet)

A samarium-cobalt (SmCo) magineti, rudzi rwemagineti isingawanzo kuvhurika, igineti rakasimba rinogara rakagadzirwa nezvinhu zviviri zvakakosha: Samarium necobalt. Samarium-cobalt magineti anowanzo kuiswa zvakafanana musimba kune neodymium magineti, asi ane tembiricha yepamusoro. ratings uye yakakwirira kumanikidza.
Mamwe maitiro eSmCo ndeaya:
Samarium-cobalt magineti anopokana zvakanyanya ne demagnetization.
Aya magineti ane kugadzikana kwakanaka kwetembiricha (tembiricha yepamusoro yekushandisa iri pakati pe250 °C (523 K) uye 550 °C (823 K); Curie tembiricha kubva 700 °C (973 K) kusvika 800 °C (1,070 K).
Iwo anodhura uye ari pasi pekuchinja kwemitengo (cobalt inonzwisisika mutengo wemusika).
SmCo magineti ane yakasimba kuramba ngura uye oxidation kuramba, kazhinji haidi kuvharwa uye inogona kushandiswa zvakanyanya mukupisa kwakanyanya uye nemamiriro ekushanda asina kunaka. Iwo ane brittle, uye anowanzo kutsemuka uye kuputika. Samarium-cobalt magineti ane yakanyanya simba zvigadzirwa (BHmax) izvo zvinotangira kubva 14 megagauss-oersteds (MG·Oe) kusvika 33 MG·Oe, iri approx. 112 kJ/m3 kusvika 264 kJ/m3; muganhu wavo wezvinyorwa ndeye 34 MG · Oe, inenge 272 kJ / m3.
Zvimwe zvinoshandiswa zvinosanganisira:
1. Motokari dzemagetsi dzepamusoro-soro dzinoshandiswa mune mamwe makirasi emakwikwi mu slotcar racingTurbomachinery.
2. Kufamba-wave chubhu munda magineti.
3. Zvishandiso zvinoda kuti sisitimu ishande pane tembiricha ye cryogenic kana kupisa kwakanyanya (kupfuura 180 ° C).
4. Zvikumbiro umo kushanda kunodiwa kuti kuenderane nekuchinja kwekushisa.
5. Benchtop NMR spectrometers.
6. Rotary encoders apo inoita basa remagnetic actuator.