Qhov sib txawv tseem ceeb ntawm plam thiab ntxaib yog tias thaum lub caij npleem, txhua lub atoms hauv ib lub block txav mus rau tib qhov deb whereas, hauv twinning, cov atoms hauv txhua lub dav hlau txuas ntxiv hauv qhov thaiv txav mus los ntawm qhov sib txawv uas yog proportional rau lawv. deb ntawm lub dav hlau ntxaib.
Ntxhi thiab ntxaib yog ob nqe lus tseem ceeb hauv kev tshawb fawb.
Daim tiab yog dab tsi?
Slip yog qhov hloov pauv loj ntawm ib feem ntawm cov siv lead ua txheeb ze rau lwm qhov raws li cov dav hlau crystallographic thiab cov lus qhia. Lo lus no yog siv nyob rau hauv cov khoom siv science. Ib qho plam tuaj yeem tshwm sim los ntawm kev nkag mus ntawm qhov tsis sib xws ntawm cov dav hlau kaw. Cov no yog cov dav hlau uas muaj cov atoms loj tshaj plaws hauv ib cheeb tsam thiab nyob ze cov lus qhia. Feem ntau, peb hu cov dav hlau uas nyob ze li lub dav hlau plam lossis glide.
Daim duab 01: Slip System
Feem ntau, ib qho kev quab yuam sab nraud uas siv rau hauv cov iav siv lead ua tuaj yeem ua rau cov khoom siv lead ua glide nrog ib leeg, uas tuaj yeem hloov cov duab ntawm cov khoom ntawd. Peb xav tau ib qho kev daws teeb meem kev ntxhov siab txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau.
Peb tuaj yeem txheeb xyuas cov txheej txheem sib txawv, suav nrog lub ntsej muag-centred cubic system qhov twg cov khauj khaum tshwm sim raws li lub dav hlau nyob ze, lub cev nruab nrab lub voos xwmfab qhov twg plam tshwm sim raws lub dav hlau ntawm luv luv Burgers Vector, hexagonal kaw-packed systems qhov twg daim ntawv npleem tshwm sim raws lub dav hlau ntim ntim, thiab lwm yam.
Twinning yog dab tsi?
Crystal twinning yog qhov xwm txheej uas ob lub ntsej muag sib txawv sib koom ua ke ntawm tib lub lattices uas taw tes rau hauv qhov sib luag. Lo lus no feem ntau yog siv nyob rau hauv cov khoom siv science. Qhov tshwm sim ntawm kev sib tw nyob rau hauv ib tug siv lead ua lattice yog ib qho intergrowth ntawm ob cais crystals nyob rau hauv ib tug ntau yam ntawm configurations. Hauv qhov tshwm sim no, qhov chaw uas cov ntsiab lus siv lead ua lattice tau sib koom hauv cov siv lead ua ntxaib yog hu ua "composition deg lossis ntxaib dav hlau". Twinning feem ntau yog ib qho teeb meem nyob rau hauv X-ray crystallography vim hais tias cov twinned muaju tsis tsim ib tug yooj yim diffraction qauv.
Muaj cov kev cai ntxaib hauv cov khoom siv chemistry. Peb tuaj yeem txhais txoj cai ntxaib los ntawm kev siv lawv tus kheej lub dav hlau lossis siv cov kev taw qhia ntawm cov ntxaib axes. Txoj cai ntxaib feem ntau hauv isometric system suav nrog Spinel txoj cai (tus ntxaib axis yog perpendicular rau lub ntsej muag octahedral), thiab Iron cross (kev txhais ntawm ob pyritohedrons uas yog ib qho subtype ntawm dodecahedron).
Daim duab 02: Ib qho khoom sib tw hla
Ntxiv mus, muaj ntau hom kev sib tw xws li kev sib cuag ntxaib (cov muaju ntxaib yooj yim), merohedral twinning (tshwm sim thaum lub lattices ntawm cov menyuam ntxaib sib cuag superimpose hauv 3Ds), nkag ntxaib (qhov twg tus neeg muaju muaj qhov zoo li ntawm hla dhau ib leeg hauv qhov sib luag), ntau tus menyuam ntxaib, thiab lwm yam.
Qhov txawv ntawm Slip thiab Twinning yog dab tsi?
Qhov sib txawv tseem ceeb ntawm plam thiab ntxaib yog tias thaum lub sijhawm plam, tag nrho cov atoms nyob rau hauv ib lub block txav tib qhov deb whereas nyob rau hauv twinning lub atoms nyob rau hauv ib tug successive dav hlau nyob rau hauv ib tug block txav los ntawm txawv deb uas yog proportional rau lawv nyob deb ntawm. lub dav hlau ntxaib.
Hauv qab infographic qhia txog qhov sib txawv ntawm kev swb thiab ntxaib hauv daim ntawv teev npe.
Summary – Slip vs Twinning
Qhov sib txawv tseem ceeb ntawm plam thiab ntxaib yog tias thaum lub caij npleem, txhua lub atoms hauv ib lub block txav mus rau tib qhov deb whereas, hauv twinning, cov atoms hauv txhua lub dav hlau txuas ntxiv hauv qhov thaiv txav mus los ntawm qhov sib txawv uas yog proportional rau lawv. deb ntawm lub dav hlau ntxaib.
