Qhov sib nqus permeability ntawm cov hlau ntshiab yog ib qho tseem ceeb ntawm lub cev tsis zoo uas qhia txog nws qhov kev ua haujlwm hauv qhov chaw sib nqus. Hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm cov hlau nplaum permeability ntawm cov hlau ntshiab:
1, Kev txhais ntawm magnetic permeability
Sib nqus permeability (μ) yog lub cev kom muaj nuj nqis uas piav qhia txog qhov yooj yim ntawm kev sib nqus ntawm cov khoom siv, uas sawv cev rau qhov kev sib nqus sib nqus ua los ntawm cov khoom siv hauv ib chav tsev hlau nplaum lub zog. Tus txheeb ze sib nqus permeability (μ r) yog qhov piv ntawm cov khoom sib nqus permeability rau lub tshuab nqus tsev magnetic permeability (μ {{0}}), uas yog, μ r=μ / μ 0.
2, Sib nqus permeability ntawm cov hlau ntshiab
Cov hlau ntshiab, raws li cov khoom siv ferromagnetic, muaj qhov sib nqus permeability ntau dua li cov khoom tsis yog ferromagnetic. Tshwj xeeb, cov txheeb ze sib nqus permeability ntawm cov hlau ntshiab feem ntau yog ntau dua 1 thiab nws txawv nrog cov kev hloov hauv lub zog sib nqus. Nyob rau hauv cov ntaub ntawv ferromagnetic ntau, qhov sib nqus permeability ntawm cov hlau ntshiab yog nyob rau theem siab.
3, Cov yam ntxwv cuam tshuam rau kev sib nqus permeability
Kev sib nqus permeability ntawm cov hlau ntshiab yog cuam tshuam los ntawm ntau yam, suav nrog:
→ Purity: Qhov siab dua qhov purity ntawm cov hlau ntshiab, qhov siab dua nws cov hlau nplaum permeability feem ntau. Vim tias impurities thiab theem ob yuav pin domain phab ntsa thiab txo cov hlau nplaum permeability.
→ Kub: Raws li qhov kub thiab txias, qhov sib nqus permeability ntawm cov hlau ntshiab yuav txo. Thaum qhov ntsuas kub nce mus txog qhov kub ntawm Curie, cov hlau ntshiab yuav poob nws cov ferromagnetism thiab nws cov hlau nplaum permeability yuav txo qis.
→ Sib nqus teb lub zog: Nyob rau hauv qhov tsis muaj zog magnetic teb, qhov sib nqus permeability ntawm cov hlau ntshiab yuav siab dua; Tab sis raws li lub zog magnetic teb nce, qhov sib nqus permeability yuav maj mam txo.
→ Txias yas deformation: Cov yas txias deformation tuaj yeem cuam tshuam rau cov qauv sib nqus ntawm cov hlau ntshiab los ntawm crushing nplej, ua rau muaj kev ntxhov siab, thiab lwm yam, yog li cuam tshuam rau nws cov magnetic permeability.
4, Kev siv cov hlau ntshiab permeability
Lub siab sib nqus permeability ntawm cov hlau ntshiab ua rau nws siv dav hauv kev lag luam xws li electromagnetics, electronics, thiab kev sib txuas lus engineering. Piv txwv li:
→ Electromagnets: Siv lub siab sib nqus permeability ntawm cov hlau ntshiab, cov khoom siv hluav taws xob zoo tuaj yeem tsim thiab siv ntau yam khoom siv hluav taws xob.
→ Transformer: Cov hlau ntshiab, ua cov khoom siv tseem ceeb ntawm lub tshuab hloov pauv, tuaj yeem txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm lub tshuab hloov pauv.
→ Inductors: Inductors ua los ntawm cov hlau ntshiab muaj qhov ruaj khov inductance thiab cov yam ntxwv zoo, ua rau lawv haum rau ntau yam khoom siv hluav taws xob.
→ Sib nqus shielding: Lub siab sib nqus permeability ntawm cov hlau ntshiab tuaj yeem siv los tsim cov hlau nplaum tiv thaiv npog lossis cov thawv, uas yog siv los thaiv cov khoom siv hluav taws xob los ntawm cov khoom sib nqus sab nraud.
Hauv cov ntsiab lus, qhov sib nqus permeability ntawm cov hlau ntshiab yog ib qho tseem ceeb ntawm lub cev tsis zoo uas cuam tshuam los ntawm ntau yam thiab muaj ntau yam kev siv hauv ntau qhov chaw.