Video: Dab tsi yog lub zog quab yuam hauv cov hlau nplaum?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv hluav taws xob engineering thiab cov ntaub ntawv tshawb fawb, thecoercivity, kuj hu ua Sib nqus kev koom tes, coercivefield los yog quab yuam , yog ib qho kev ntsuas ntawm lub peev xwm ntawm cov khoom siv ferromagnetic los tiv thaiv sab nraud magnetic teb tsis ua demagnetized.
Ntawm no, dab tsi yog residual magnetism thiab coercive force?
Residual Magnetism . Qhov no residualmagnetism ntawm cov khoom siv hlau nplaum raug tshem tawm los ntawm kev siv magnetizing zog (oc) npe quab yuam nyob rau hauv lub opposite txoj kev.
Ib sab saum toj no, dab tsi yog cov hlau nplaum mos? Sib nqus Khoom siv: Soft Magnets . Softmagnetic cov ntaub ntawv yog cov ntaub ntawv uas yooj yim magnetized thiab demagnetised. Lawv feem ntau muaj intrinsiccoercivity tsawg dua 1000 Am-1. Lawv feem ntau yog siv los txhim kho thiab / lossis channel cov flux uas tsim los ntawm cov hluav taws xob tam sim no.
Ib sab saum toj no, dab tsi yog cov khoom sib nqus retentivity?
RETENTIVITY : Cov Sib nqus teb seem nyob rau hauv lub khoom txawm tias tom qab tshem tawm qhov chaw sab nraud yog lub npe hu ua RETENTIVITY . Nws qhia peb txog Sib nqus zog of khoom . Qhov tsawg kawg nkaus tus nqi ntawm magnetisingintensity yuav tsum tau coj tus khoom nyob rau hauv nws originalstate i.e. 0 Sib nqus teb, hu ua COERCIVITY.
Dab tsi yog txhais los ntawm BH nkhaus?
Cov B-H nkhaus yog cov nkhaus Cov yam ntxwv ntawm cov khoom sib nqus ntawm cov khoom lossis cov khoom lossis cov hlau. Nws qhia koj li cas cov khoom teb rau sab nraud magnetic teb, thiab yog ib qho tseem ceeb ntawm cov ntaub ntawv thaum tsim magneticcircuits. Lub hysteresis los rau hauv kev ua si thaum cov khoom tau raug magnetized.
Pom zoo:
Dab tsi yog cov hlau nplaum uas ua los ntawm qhov kev npaj ntawm electrons yog dab tsi?
Electrons yog teem rau hauv plhaub thiab orbitals nyob rau hauv ib tug atom. Yog hais tias lawv sau lub orbitals kom muaj ntau spin taw tes rau hauv qab (los yog vice versa), txhua atom yuav ua zoo li ib tug me me hlau nplaum. Thaum ib daim ntawm cov hlau tsis muaj hlau nplaum (lossis lwm yam khoom siv ferromagnetic) raug rau sab nraud magnetic teb, ob yam tshwm sim
Cov hlau nplaum ruaj khov puas poob hlau nplaum?
Yog lawm, nws muaj peev xwm ua tau rau cov hlau nplaum ruaj khov kom poob nws cov hlau nplaum. Muaj peb txoj hauv kev rau qhov no tshwm sim: 2) Ntawm qhov demagnetizing magnetic teb: cov hlau nplaum tas mus li nthuav tawm cov yam ntxwv hu ua coercivity, uas yog lub peev xwm ntawm cov khoom siv los tiv thaiv demagnetized los ntawm kev siv magnetic teb
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