Puas yog peb cov khoom siv yas crystalline lossis amorphous?Ua ntej, peb yuav tsum to taub dab tsi yog qhov tseem ceeb sib txawv ntawm crystalline thiab amorphous.
Crystals yog atoms, ions lossis molecules uas tau teeb tsa hauv qhov chaw raws li qee lub sijhawm los tsim cov khoom nrog cov duab geometric tsis tu ncua thaum lub sijhawm crystallization.Amorphous yog ib lub cev amorphous, los yog amorphous, amorphous khoom, uas yog ib qho khoom uas cov atoms tsis tau teem rau hauv ib qho kev txiav txim spatial, sib xws rau cov siv lead ua.
Cov muaju muaj xws li pob zeb diamond, quartz, mica, alum, rooj ntsev, tooj liab sulfate, qab zib, monosodium glutamate thiab lwm yam.Feem ntau amorphous yog paraffin, rosin, asphalt, roj hmab, iav thiab lwm yam.
Kev faib tawm ntawm cov khoom siv lead ua yog dav heev, thiab feem ntau ntawm cov khoom siv hauv cov xwm txheej yog cov muaju.Gases, kua thiab amorphous tshuaj kuj tuaj yeem hloov mus ua cov muaju nyob rau hauv qee yam kev mob.Peb-dimensional periodic qauv ntawm kev npaj ntawm atoms los yog molecules nyob rau hauv lub siv lead ua yog qhov yooj yim tshaj plaws thiab tseem ceeb feature ntawm cov siv lead ua.
Feem ntau amorphous lub cev muaj xws li iav thiab ntau cov khoom siv polymer xws li styrene thiab lwm yam.Ntev npaum li qhov txias txias txaus, cov kua yuav ua rau lub cev amorphous.Ntawm lawv, nws yuav txias dhau lawm, thiab lub lattice lossis pob txha pob txha nyob rau hauv lub thermodynamically favour crystalline lub xeev yuav poob qhov ceev ntawm kev txav ua ntej lub atoms yog teem, tab sis kwv yees li faib ntawm cov atoms nyob rau hauv lub xeev cov kua yog tseem khaws cia.
Yog li ntawd, peb tuaj yeem txiav txim siab tias cov yas hauv lub neej yog amorphous.
Post lub sij hawm: Lub Xya hli ntuj-23-2022