Video: Ib qho piv txwv ntawm amorphous khoom yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Amorphous solids suav nrog ob qho tib si natural thiab man-made cov ntaub ntawv. Qhov feem ntau hais piv txwv ntawm ib qho khoom amorphous yog iav. Txawm li cas los xij, amorphous khoom muaj ntau rau tag nrho cov subsets ntawm cov khoom khib nyiab . Ntxiv piv txwv muaj xws li nyias zaj duab xis lubricants, iav hlau, polymers, thiab gels.
Hais txog qhov no, txhais li cas los ntawm amorphous khoom?
Ib amorphous khoom tsis muaj qhov tseeb geometric lossis crystalline puab. Ib amorphous khoom yog ib qho noncrystalline khov kho nyob rau hauv uas cov atoms thiab molecules tsis tau koom nyob rau hauv ib tug meej lattice qauv. Xws li cov khoom khib nyiab muaj xws li iav, yas, thiab gel.
Ib tug kuj yuav nug, puas yog roj hmab amorphous khoom? Tsis zoo li crystalline khov kho , ib amorphous khoom yog a khov kho uas tsis muaj kev txiav txim sab hauv. Qee qhov piv txwv ntawm amorphous khoom suav nrog roj hmab , yas, thiab gels. Tsis zoo li crystalline cov khoom khib nyiab uas muaj cov dav hlau tsis tu ncua ntawm cleavage, lub cev muaj zog ntawm amorphous khoom yog tib yam nyob rau hauv tag nrho cov lus qhia.
Hauv qhov no, dab tsi ua rau ib yam khoom siv lead ua lossis amorphous khoom?
Cov ntsiab lus ntawm a khov kho tuaj yeem npaj ua ob txoj hauv kev: lawv tuaj yeem tsim ib qho kev rov ua peb-dimensional qauv hu ua a siv lead ua lattice, yog li tsim crystalline khoom , los yog lawv tuaj yeem sib sau ua ke nrog tsis muaj kev txiav txim tshwj xeeb, qhov twg lawv tsim ib qho amorphous khoom (los ntawm Greek ámorphos, txhais tau tias"
Dab tsi yog qhov txawv ntawm amorphous khoom thiab crystalline khoom?
Crystalline solids muaj cov duab meej nrog cov txheej txheem ions, molecules lossis atoms hauv a peb-dimensional qauv feem ntau hu ua siv lead ua lattice. Crystalline Cheebtsam yog tuav ua ke los ntawm uniform intermolecular rog whereas nyob rau hauv amorphous khoom cov zog no txawv ntawm ib lub atom mus rau lwm qhov.
Pom zoo:
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