Ibyerekeye Magneti

Niki Magneti ya Neodymium

Imashini ya Neodymium (mu magambo ahinnye: NdFeb magnets) nizo rukuruzi zikomeye zihoraho mubucuruzi ziboneka, ahantu hose kwisi. Zitanga urwego rutagereranywa rwa magnetisme no kurwanya demagnetisation ugereranije na Ferrite, Alnico ndetse na Samarium-cobalt.
Imashini ya Neodymium itondekanya hakurikijwe ibicuruzwa byinshi bitanga ingufu, bifitanye isano na magnetiki flux isohoka mubunini bwa buri gice. Indangagaciro zo hejuru zerekana magnesi zikomeye. Kuri magnet ya NdFeB yacumuye, hariho ibyiciro mpuzamahanga bizwi cyane. Indangagaciro zabo ziri hagati ya 28 kugeza 55. Inyuguti ya mbere N mbere yindangagaciro ni ngufi kuri neodymium, bisobanura magnet ya NdFeB yacumuye.
Imashini ya Neodymium ifite remanence yo hejuru, imbaraga nyinshi cyane nigicuruzwa cyingufu, ariko akenshi ubushyuhe bwa Curie burenze ubundi bwoko bwa magneti. Umwihariko wa neodymium magnet alloys urimo terbium na
dysprosium yatejwe imbere ifite ubushyuhe bwo hejuru bwa Curie, ibemerera kwihanganira ubushyuhe bwo hejuru.Imbonerahamwe ikurikira iragereranya imikorere ya magneti ya magneti ya neodymium nubundi bwoko bwa magnesi zihoraho.

Niki magnesi ya neodymium ikoreshwa? Bitewe na magnesi ya neodymium cyane, imikoreshereze yabo ni nini cyane. Zikorerwa mubiro, ubucuruzi ninganda zikenera, zikoreshwa muburyo bwa turbine z'umuyaga,
abavuga, terefone na moteri, mikoro, sensor, ubuvuzi, gupakira, ibikoresho bya siporo, ubukorikori hamwe n’indege.

Niki Magnite ya Ferrite

Magnite ya Ferrite usibye magnite ikomeye ya ferrite na magneti yoroshye.
Ferrites ikomeye ifite imbaraga nyinshi, biragoye rero demagnetize. Bakoreshwa mugukora magnesi zihoraho kubisabwa nka firigo, indangururamajwi, na moteri ntoya yamashanyarazi nibindi.

Ferrite yoroshye ifite imbaraga nke, kuburyo zihindura byoroshye magnetisiyasi kandi ikora nkuyobora amashanyarazi. Zikoreshwa mu nganda za elegitoroniki kugirango zikoreshe neza za magneti bita ferrite cores ya inductor yumurongo mwinshi, transformateur na antene, no mubice bitandukanye bya microwave.

Ibikoresho bya ferrite bihenze cyane, bikozwe ahanini na oxyde de fer, kandi bifite imbaraga zo kurwanya ruswa.
Niki Magnetiki ya Alnico
Imashini ya Alnico ni magnesi zihoraho zigizwe cyane cyane nuruvange rwa aluminium, nikel na cobalt ariko birashobora no gushiramo umuringa, icyuma na titanium.
Baza muri isotropic, itari iyerekezo, cyangwa anisotropique, mono-icyerekezo, imiterere. Iyo bimaze gukoreshwa, bifite inshuro 5 kugeza kuri 17 imbaraga za rukuruzi za magnetite cyangwa lodestone, zisanzwe zibaho ibikoresho bya rukuruzi bikurura ibyuma.
Imashini ya Alnico ifite coefficient yubushyuhe buke kandi irashobora guhindurwa kugirango yinjizwe cyane kugirango ikoreshwe mubushyuhe bwo hejuru kugeza kuri 930 ° F cyangwa 500 ° C. Zikoreshwa aho kurwanya ruswa bikenewe no muburyo butandukanye bwa sensor.

Niki Magneti ya Samarium-cobalt (Magnet ya SmCo)

Magneteri ya samarium - cobalt (SmCo), ubwoko bwa rukuruzi idasanzwe-yisi, ni rukuruzi ikomeye ihoraho ikozwe mubintu bibiri by'ibanze: Samarium na cobalt. Magneti ya samariyumu - cobalt ikunze gushyirwa hamwe nkimbaraga za magneti ya neodymium, ariko ifite ubushyuhe bwinshi amanota hamwe no guhatirwa hejuru.
Ibiranga bimwe bya SmCo ni:
Imashini ya Samarium-cobalt irwanya cyane demagnetisation.
Izi magneti zifite ubushyuhe bwiza (gukoresha ubushyuhe buri hagati ya 250 ° C (523 K) na 550 ° C (823 K); Ubushyuhe bwa Curie kuva kuri 700 ° C (973 K) kugeza 800 ° C (1,070 K).
Birahenze kandi biterwa nihindagurika ryibiciro (cobalt irumva ibiciro byisoko).
Imashini ya SmCo ifite imbaraga zo kurwanya ruswa no kurwanya okiside, mubisanzwe ntabwo ikenera gutwikirwa kandi irashobora gukoreshwa cyane mubushyuhe bwinshi no mukazi keza. Ziravunitse, kandi zikunda gucika no gukata. Imashini za Samarium - cobalt zifite ingufu nyinshi (BHmax) zingana na megagauss-oersteds 14 (MG · Oe) kugeza kuri 33 MG · Oe, ni hafi. 112 kJ / m3 kugeza 264 kJ / m3; imipaka yabo ni 34 MG · Oe, hafi 272 kJ / m3.
Ibindi bikoreshwa birimo:
1.
2. Ingendo-yumurongo wumurongo wa magneti.
3. Porogaramu izakenera sisitemu gukora mubushyuhe bwa kirogenike cyangwa ubushyuhe bwinshi (hejuru ya 180 ° C).
4. Porogaramu aho imikorere isabwa guhuza nihinduka ryubushyuhe.
5. Benchtop NMR yerekanwe.
6. Rotary encoders aho ikora umurimo wa rukuruzi ya rukuruzi.