Nkag siab txog Hexagonal Boron Nitride
Feb 09, 2022
Boron nitride yog tsim los ntawm nitrogen thiab boron atoms nyob rau hauv lub siv lead ua, cov qauv siv lead ua tuaj yeem muab faib ua: hexagonal boron nitride (HBN), tuab kab ntawm hexagonal boron nitride (WBN) thiab cubic boron nitride, cov qauv siv lead ua ntawm hexagonal boron nitride. muaj cov qauv graphite zoo sib xws, xoob, lubrication, yooj yim nqus dej, lub teeb thiab lwm yam zoo ntawm cov hmoov dawb, hais dua li "dawb graphite.
Hexagonal boron nitride muaj tib qhov nthuav coefficient zoo li quartz, tab sis kaum npaug ntawm thermal conductivity. Tsis tas li ntawd muaj cov tshuaj zoo lubrication ntawm qhov kub thiab txias, yog ib qho zoo heev kub kub khoom lubricant, muaj zog neutron absorption muaj peev xwm, tshuaj stability, tshuaj inertia yuav luag tag nrho cov hlau molten.
Hexagonal boron nitride yog insoluble hauv dej txias. Thaum dej boils, nws hydrolyzes qeeb heev thiab tsim ib tug me me ntawm boric acid thiab ammonia. Nws tsis hnov mob nrog qaug zog acid thiab lub hauv paus muaj zog ntawm chav tsev kub, thiab yog me ntsis soluble hauv kub acid. Nws muaj kev tiv thaiv corrosion ntau rau ntau yam inorganic acids, hauv paus, ntsev daws thiab cov kuab tshuaj organic.