boron nitride hmoov

Boron nitride yog ib qho thermally thiab chemically resistant refractory compound ntawm boron thiab nitrogen nrog cov tshuaj formula BN. Nws muaj nyob rau hauv ntau cov ntaub ntawv crystalline uas yog isoelectronic rau cov qauv zoo sib xws carbon lattice. Daim ntawv hexagonal sib raug rau graphite yog qhov ruaj khov thiab mos tshaj plaws ntawm BN polymorphs, thiab yog li siv los ua cov roj nplua nyeem thiab cov khoom ntxiv rau cov khoom kom zoo nkauj. Lub cubic (zincblende aka sphalerite qauv) ntau yam analogous rau pob zeb diamond hu ua c-BN; nws yog softer dua pob zeb diamond, tab sis nws thermal thiab tshuaj stability yog superior. Qhov tsis tshua muaj wurtzite BN hloov kho zoo ib yam li lonsdaleite tab sis me ntsis softer dua daim ntawv cubic.

Vim yog thermal thiab tshuaj stability zoo, boron nitride ceramics yog siv nyob rau hauv high-temperature khoom. Boron nitride muaj peev xwm siv tau hauv nanotechnology.