Mabapi le Magnets

Limanete tsa Neodymium ke eng

Limanete tsa Neodymium (khutsufatso: Limanete tsa NdFeb) ke limakete tse matla ka ho fetesisa tse fumanehang khoebong, hohle lefatšeng. Li fana ka maemo a ke keng a bapisoa a makenete le ho hanyetsa demagnetization ha a bapisoa le Ferrite, Alnico esita le limakenete tsa Samarium-cobalt.
Limatla tsa Neodymium li hlophisoa ho latela sehlahisoa sa tsona sa matla a holimo, se amanang le tlhahiso ea matla a khoheli ka bophahamo ba yuniti. Maemo a holimo a bontša limakete tse matla. Bakeng sa makenete a sintered NdFeB, ho na le sehlopha se tsebahalang sa machabeng. Litekanyetso tsa bona li tloha ho 28 ho ea ho 55. Lengolo la pele la N pele ho litekanyetso le khutsufatsoa bakeng sa neodymium, e bolelang li-magnets tsa NdFeB tse sintered.
Limanete tsa Neodymium li na le remanence e phahameng, matla a holimo haholo le sehlahisoa sa matla, empa hangata a theola mocheso oa Curie ho feta mefuta e meng ea limakete. Li-alloys tse khethehileng tsa neodymium magnet tse kenyelletsang terbium le
Li-dysprosium li entsoe tse nang le mocheso o phahameng oa Curie, o li lumellang hore li mamelle mocheso o phahameng.

Limanete tsa neodymium li sebelisetsoa eng? Ka lebaka la limatlase tsa neodymium tse matla haholo, ts'ebeliso ea tsona e atile haholo. Li hlahisoa bakeng sa litlhoko tsa ofisi, tsa khoebo le tsa indasteri, tse sebelisoang mefuteng ea li-turbine tsa moea,
libui, li-earphone le li-motor, li-microphone, li-sensor, tlhokomelo ea bongaka, liphutheloana, lisebelisoa tsa lipapali, mesebetsi ea matsoho le libaka tsa lifofane.

Limanete tsa Ferrite ke eng

Limanete tsa Ferrite ntle le limakenete tse thata tsa ferrite le limakenete tse bonolo.
Li-ferrite tse thata li na le matla a phahameng, kahoo ho thata ho li tlosa. Li sebelisetsoa ho etsa limakete tse sa feleng bakeng sa lits'ebetso tse joalo ka sehatsetsi, libuela-hōle, le li-motor tse nyane tsa motlakase joalo-joalo.

Li-ferrite tse bonolo li na le matla a fokolang, kahoo li fetola matla a tsona habonolo 'me li sebetsa e le li-conductors tsa matla a khoheli. Li sebelisoa indastering ea lisebelisoa tsa elektroniki ho etsa li-cores tse sebetsang hantle tse bitsoang li-ferrite cores bakeng sa li-inductors tse phahameng haholo, li-transformer le li-antenna, le likarolo tse fapaneng tsa microwave.

Metsoako ea Ferrite e theko e tlase haholo, e entsoe ka boholo ba iron oxide, 'me e na le khanyetso e ntle ea kutu.
Alnico Magnets ke Eng
Alnico magnets ke makenete a sa feleng ao haholo-holo a entsoeng ka motsoako oa aluminium, nickel le cobalt empa a ka kenyelletsa koporo, tšepe le titanium.
Li tla ka sebopeho sa isotropic, non-directional, kapa anisotropic, mono-directional. Ha li se li hoketsoe, li na le matla a khoheli a makhetlo a 5 ho isa ho a 17 a matla a makenete a magnetite kapa lodestone, ao ka tlhaho e leng lisebelisoa tsa makenete tse hohelang tšepe.
Limanete tsa Alnico li na le coefficient e tlase ea mocheso 'me li ka lekanyetsoa bakeng sa ho kenngoa ha masala a phahameng ho sebelisoa lits'ebetsong tsa mocheso o phahameng o fihlang ho 930 ° F kapa 500 ° C. Li sebelisoa moo ho hanyetsanang le kutu ho hlokahalang le bakeng sa mefuta e fapaneng ea li-sensor.

Samarium-cobalt Magnet (SmCo Magnet) ke eng?

A samarium–cobalt (SmCo) makenete, e leng mofuta oa makenete ea rare-earth, ke makenete o matla o sa feleng o entsoeng ka lintho tse peli tsa mantlha: Samarium le cobalt. litekanyetso le matla a holimo.
Litšobotsi tse ling tsa SmCo ke:
Limanete tsa Samarium-cobalt li hanana haholo le demagnetization.
Limanete tsena li na le botsitso bo botle ba mocheso (boholo ba tšebeliso ea mocheso lipakeng tsa 250 °C (523 K) le 550 °C (823 K); mocheso oa Curie ho tloha 700 °C (973 K) ho isa 800 °C (1,070 K).
Li theko e boima 'me li itšetlehile ka ho fetoha ha theko (cobalt e na le maikutlo a theko ea' maraka).
Limanete tsa SmCo li na le khanyetso e matla ea ho hanyetsa kutu le oxidation, hangata ha li hloke ho koaheloa mme li ka sebelisoa haholo mochesong o phahameng le maemong a futsanehileng a ho sebetsa. Li brittle, 'me li tloaetse ho petsoha le ho petsoha. Limanete tsa Samarium–cobalt li na le lihlahisoa tse ngata tsa matla (BHmax) tse tlohang ho 14 megagauss-oersteds (MG·Oe) ho isa ho 33 MG·Oe, ke hoo e ka bang. 112 kJ / m3 ho 264 kJ / m3; moeli oa bona oa khopolo ke 34 MG · Oe, hoo e ka bang 272 kJ / m3.
Lisebelisoa tse ling li kenyelletsa:
1. Likoloi tsa motlakase tsa maemo a holimo tse sebelisoang lihlopheng tsa tlholisano ho feta ho slotcar racingTurbomachinery.
2. Limanete tsa masimong a leqhubu la maqhubu.
3. Lisebelisoa tse tla hloka hore sistimi e sebetse ho mocheso oa cryogenic kapa mocheso o chesang haholo (ho feta 180 ° C).
4. Likopo tseo ho tsona ts'ebetso e hlokahalang ho lumellana le phetoho ea mocheso.
5. Li-spectrometers tsa Benchtop NMR.
6. Li-encoder tsa rotary moo e etsang mosebetsi oa magnetic actuator.