Thaum tsis muaj oxygen, pob zeb diamond tuaj yeem ua kom sov rau qhov kub ntau dua. Saum toj no qhov kub thiab txias teev hauv qab no, pob zeb diamond crystals hloov mus rau graphite. Qhov kawg melting point ntawm pob zeb diamond yog hais txog 4, 027 ° C (7, 280 ° Fahrenheit).
Yuav siv sijhawm ntev npaum li cas rau pob zeb diamond hloov mus ua graphite?
Lub zog ua kom lub zog no qhia peb tias ntawm 25 ° C, nws yuav siv sijhawm zoo tshaj li ib txhiab xyoo los hloov ib cubic centimeter ntawm pob zeb diamond rau graphite.
Vim li cas pob zeb diamond tsis tig mus ua graphite?
Ntawm qhov siab, pob zeb diamond yog qhov ruaj khov tshaj plaws ntawm cov pa roj carbon ntshiab thiab tsis yog graphite. … Tsis tas li ntawd nco ntsoov tias txij li pob zeb diamond yog ua los ntawm carbon, pob zeb diamond tuaj yeem hlawv ib yam li cov thee. Yog li ntawd, yog tias muaj oxygen txaus, pob zeb diamond ntawm qhov kub thiab txias yuav combust tsim carbon dioxide es tsis hloov mus rau hauv graphite.
Puas pob zeb diamond tig mus rau graphite?
Pob zeb diamond yog theem siab-siab uas tsim tob hauv ntiaj teb. Raws li ib txwm muaj, pob zeb diamond yog metastable, txhais tau tias nws hloov mus rau graphite thaum cov txheej txheem pib nrog lub zog txaus. … Nws tuaj yeem hloov nws cov qauv sab hauv mus rau qhov kev txiav txim sib txawv, yog li tig mus rau hauv graphite.
Yuav ua li cas graphite hloov mus rau pob zeb diamond?
Ua ntej, cov pa roj carbon yog hloov los ntawm pob zeb diamond lattice mus rau carbonthiab muaj raws li theem thib ob uas cov nplej loj hlob ntawm cov pa roj carbon monoxide sai sai los muab cov khoom lag luam.pom graphite crystallites.
