Tsev > Kev Paub > Ntsiab lus
Microcrystalline
- Sep 05, 2017 -

Microcrystalline yog ib qho siv lead ua los ntawm ntau txhiab tus los yog kaum tawm txhiab tus hlwb ib lis thiab tsuas yog rov qab txog cov dozens ntawm cov kab hauv txoj kev coj ntawm ib txoj kab uas siv lead ua xwb. Qhov tshwj xeeb ntawm cov microcrystalline yog loj, qhov chaw adsorption nta thiab cov dej ua si yog heev mas. Cov kev sim tau pom tias cov diffraction peak (los yog hmoov Crystal diffraction arc) muaj kev nthuav dav thiab cov dispersion ntawm particle loj nyob rau hauv (100 ~ 2000) x 10-10m ntau ntawm cov hu ua microcrystalline, uas yog ib daim ntawv hloov ntawm cov nplais rau amorphous lub cev. Xws li cov pa roj carbon dioxide yog micro-crystal ua los ntawm ntau txhiab lossis tsheej lab ntawm cov hlwb, 001-hom 002 diffraction peaks nyob rau hauv cov pa roj carbon dub siv diffraction yog diffuse tshwj xeeb, thaum 100 thiab 110 diffraction yog sharper, uas qhia tau tias lub sij hawm C axis kev taw qhia yog ntau me dua li ntawm ib thiab B axis, thiab tias cov microcrystalline yog ib lub xeev metastable, nws yuav tso ib yam crystallization tshav kub thaum nws yog transformed rau hauv lub xeev crystalline.