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Amakenete ea neodymium(e tsejoang hape e leNdFeB,NIBkapaNeomagnet) ke mofuta o sebelisoang haholo oamakenete e sa tloaelehang.Ke amakenete e sa felengentsoe kamotsoakoeaneodymium,tšepe, leboroneho theha Nd2Fe14Btetragonalsebopeho sa kristale.Nts'etsopele e ikemetseng ka 1984 keGeneral MotorsleLitšepe tse khethehileng tsa Sumitomo, Limanete tsa neodymium ke mofuta o matla ka ho fetisisa oa makenete o sa feleng o fumanehang khoebong.Limatla tsa NdFeB li ka khetholloa e le li-sintered kapa li tlamisoa, ho latela mokhoa oa tlhahiso o sebelisoang.Li nkile sebaka sa mefuta e meng ea limakete lits'ebetsong tse ngata lihlahisoa tsa sejoale-joale tse hlokang limakete tse matla tse sa feleng, joalo kalikoloi tsa motlakaseka lithulusi tse se nang mohala,li-disk tse thatale li-fasteners tsa makenete.
Thepa
Mephato
Limanete tsa Neodymium li hlophisoa ho ea ka tsonaboholo ba sehlahisoa sa matla, e amanang lematla a khohelitlhahiso 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 tsona li tloha ho N28 ho ea ho N55.Tlhaku ea pele N pele litekanyetso li le khuts'oane bakeng sa neodymium, ho bolelang limakete tsa NdFeB tse sintered.Mangolo a latelang litekanyetso a bontša matla a ka hare le mocheso o phahameng oa ho sebetsa (o amana hantle leMocheso oa curie), e tlohang ho ea kamehla (ho fihla ho 80 °C kapa 176 °F) ho ea ho TH (230 °C kapa 446 °F).
Mephato ea limmete tsa sintered NdFeB:
- N30 – N55
- N30M – N50M
- N30H – N50H
- N30SH – N48SH
- N30UH - N42UH
- N28EH – N40EH
- N28TH – N35TH
Lintho tsa Magnetic
Lintho tse ling tsa bohlokoa tse sebelisoang ho bapisa limakete tse sa feleng ke:
- Remanence(Br), e lekanyang matla a matla a khoheli.
- Ho qobella(Hci), ho hanyetsa ha thepa ho fetoha demagnetized.
- Boholo ba sehlahisoa sa matla(BHmax), boima ba matla a khoheli, bo khetholloang ka boleng bo phahameng bamatla a khoheli(B) linakomatla a matla a khoheli(H).
- Mocheso oa curie(TC), mocheso oo thepa e lahleheloang ke makenete.
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.Special neodymium magnet alloys tse kenyeletsangterbiumledysprosiumli entsoe tse nang le mocheso o phahameng oa Curie, o li lumellang ho mamella mocheso o phahameng. Tafole e ka tlase e bapisa ts'ebetso ea makenete ea limakete tsa neodymium le mefuta e meng ea limakete tse sa feleng.
Lintho tsa 'mele le tsa mochini
| Thepa | Neodymium | Sm-Co |
|---|---|---|
| Remanence(T) | 1–1.5 | 0.8–1.16 |
| Ho qobella(MA/m) | 0.875–2,79 | 0.493–2,79 |
| Recoil permeability | 1.05 | 1.05–1.1 |
| Thempereichara ea coefficient of remanence (%/K) | −(0.12–0.09) | −(0.05–0.03) |
| Thempereichara ea coefficient of coercivity (%/K) | −(0.65–0.40) | −(0.30–0.15) |
| Mocheso oa curie(°C) | 310–370 | 700–850 |
| Boima ba 'mele (g/cm3) | 7.3–7.7 | 8.2–8.5 |
| Coefficient ea ho eketsa mocheso, parallel to magnetization (1/K) | (3–4)×10−6 | (5–9)×10−6 |
| Coefficient ea ho eketsa mocheso, perpendicular to magnetization (1/K) | (1–3)×10−6 | (10–13)×10−6 |
| Matla a flexural(N/mm2) | 200–400 | 150–180 |
| Matla a hatellang(N/mm2) | 1000–1100 | 800-1000 |
| Matla a tšepe(N/mm2) | 80–90 | 35–40 |
| Vickers thata(HV) | 500–650 | 400–650 |
| Motlakaseho hanyetsa(Ω·cm) | (110–170)×10−6 | (50–90)×10−6 |
Nako ea poso: Jun-05-2023