Video: Vim li cas cov khoom nyiam cov hlau nplaum?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog vim li cas rau qhov no khoom muaj cov khoom siv ferrous, feem ntau hlau, uas yog nyiam mus rau hlau nplaum . Hlau ib txwm tshwm sim hauv ntau yam xws li qee cov kua lossis txawm tias cov nroj tsuag, tab sis nws yuav siv zog heev hlau nplaum rau nyiam cov khoom me me hauv qee yam thiab pom nws ua haujlwm.
Cov lus nug tseem yog, vim li cas cov khoom nyiam cov hlau nplaum?
Cov electrons uas khi rau yog daig rau tus kheej atoms. Xws li lawv qiv tag nrho cov magnetic teb rau lub atom lawv nyob. Yog li, qee cov hlau yog attracted rau hlau nplaum vim lawv muaj tinier hlau nplaum . Cov me me hlau nplaum twist txog kom lawv ua raws li cov teb ntawm qhov loj hlau nplaum.
Ib yam li ntawd, qee yam khoom puas tuaj yeem ua hlau nplaum? Tag nrho cov atoms yog Sib nqus ; lawv muaj nqi mus ncig hauv lawv. Rau macroscopic khoom ua ntawm atoms los ua ib hlau nplaum , cov atom Sib nqus teb nyob rau hauv nws yuav tsum dlhos ib leeg. Qhov no yuav tsim kom muaj qhov loj me Sib nqus teb ncig lub khoom.
Kuj kom paub, vim li cas qee cov khoom nyiam cov hlau nplaum thiab lwm tus tsis?
Ob hlau nplaum nyiam rau txhua tus lwm yam vim lawv cov teb sib cuam tshuam. Feem ntau cov ntaub ntawv uas yog tsis yog hlau nplaum ua tsis yog muaj net sab nraud teb, thiab pom tseeb, lawv ua tsis nyiam rau yam; txawm li cas los xij, qee hlau alloys muaj peev xwm muaj ib tug net teb tsim los ntawm kev thov rau sab nraud teb.
Dab tsi yuav lo rau hlau nplaum?
Feem ntau, hlau nplaum nplaum rau cov khoom ua los ntawm hlau, npib tsib xee, los yog cobalt. Cov ntaub ntawv no yog hu ua ferromagnetic cov ntaub ntawv. Cov ntaub ntawv ferromagnetic muaj cov qauv tshwj xeeb. A hlau nplaum tau hloov cov kev taw qhia ntawm lub Sib nqus lub zog ntawm atoms nyob rau hauv cov ntaub ntawv no.
Pom zoo:
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
Cov yas puas tuaj yeem nyiam cov hlau nplaum?
Yog li, lub magnetic teb tuaj yeem raug ntxias hauv ib qho ntawm cov hlau. Cov ntaub ntawv uas tsis nyiam cov hlau nplaum zoo li huab cua, ntoo, yas, tooj dag, thiab lwm yam, muaj ib qho permeability ntawm, qhov tseem ceeb, 1. Tsis muaj hlau nplaum induced nyob rau hauv lawv los ntawm anexternal magnetic teb, thiab yog li ntawd, lawv yog notattracted los ntawm ib tug hlau nplaum
Cov yam ntxwv twg ntawm cov hlau atoms pab piav qhia vim li cas valence electrons hauv cov hlau yog delocalized?
Ib daim ntawv cog lus hlau yog kev sib koom ntawm ntau cov khoom siv hluav taws xob sib cais ntawm ntau cov ions zoo, qhov twg cov electrons ua raws li 'cov kua nplaum' muab cov khoom tsim nyog. Nws tsis zoo li covalent lossis ionic bonding. Cov hlau muaj zog ionization tsawg. Yog li ntawd, valence electrons tuaj yeem raug delocalized thoob plaws hauv cov hlau
Vim li cas cov hlau ua hlau nplaum ruaj khov?
Thaum cov hlau tsis muaj hlau nplaum yog siv rau cov hlau nplaum, cov atoms nyob rau hauv nws rov kho lawv tus kheej nyob rau hauv ib yam uas tsim ib tug mus tas li hlau nplaum. Raws li cov atoms ua kom haum, lawv tsim ib qho chaw sib nqus uas tsis poob nws lub zog. Yuav kom tsim tau ib qho chaw sib nqus, ib qho khoom atoms yuav tsum tau ua kom zoo
Vim li cas cov hlau nplaum tseem ceeb rau cov menyuam yaus?
Tej zaum qhov tseem ceeb tshaj plaws ntawm lub ntiaj teb magnetic teb yog tias nws tiv thaiv peb ntawm lub hnub ci cua thiab hluav taws xob. Cov hlau nplaum kuj tuaj yeem tsim los ntawm kev siv hluav taws xob. Los ntawm wrapping ib tug hlau nyob ib ncig ntawm ib tug hlau bar thiab khiav tam sim no los ntawm cov hlau, cov hlau nplaum muaj zog heev tuaj yeem tsim tau