Lub hardness ntawm carbon graphite feem ntau yog 1.5. Cov pa roj carbon graphite muaj cov khoom zoo ntawm tus kheej lubricating thiab yog cov khoom siv sib txhuam ntau tshaj plaws hauv kev lag luam foob. cov
Qhov sib txawv ntawm carbon graphite, pob zeb diamond thiab graphite
Pob zeb diamond: Cov pa roj carbon atoms tau teem rau hauv qhov chaw peb sab hauv "skeleton" cov duab, nrog cov hardness siab heev, Mohs hardness ntawm 10.
Graphite: Cov pa roj carbon atoms tau teem rau hauv cov khaubncaws sab nraud povtseg, thiab kev sib txuas ntawm cov khaubncaws sab nraud povtseg tsis muaj zog, yog li nws yog mos heev, nrog Mohs hardness tsuas yog 1.
