Qhov sib txawv ntawm Boron Nitride Thiab Graphite Thiab Daim Ntawv Thov
Jul 31, 2023
Boron Nitride vs. Graphite: Qhov txawv, kev siv, thiab qhov zoo
Boron nitride thiab graphite yog ob cov ntaub ntawv uas feem ntau tau muab piv rau ib leeg vim lawv cov txheej txheem zoo sib xws thiab cov khoom siv thermal. Txawm li cas los xij, txawm hais tias ob qho tib si cov ntaub ntawv muaj txiaj ntsig zoo hauv ntau qhov kev lag luam, lawv muaj qhov sib txawv uas ua rau lawv txawv.
Ib qho ntawm qhov sib txawv ntawm boron nitride thiab graphite yog lawv cov tshuaj muaj pes tsawg leeg. Boron nitride yog tsim los ntawm boron thiab nitrogen atoms nyob rau hauv ib tug hexagonal lattice qauv, thaum graphite yog tsim los ntawm carbon atoms nyob rau hauv ib tug txheej, hexagonal qauv. Qhov sib txawv no ua rau boron nitride muaj tshuaj lom neeg ruaj khov dua li graphite thiab tiv taus oxidation thiab tshuaj corrosion.
Lwm qhov sib txawv tseem ceeb ntawm ob cov ntaub ntawv yog lawv cov khoom thermal. Boron nitride muaj cov thermal conductivity zoo heev thiab tuaj yeem tiv taus qhov kub siab txog 3000 degree, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv kub. Graphite, ntawm qhov tod tes, muaj thermal stability thiab feem ntau yog siv los ua thermal conductor lossis insulator.
Sib nrug los ntawm lawv qhov sib txawv, ob qho tib si boron nitride thiab graphite muaj lawv cov ntawv tshwj xeeb hauv ntau qhov kev lag luam. Boron nitride feem ntau yog siv nyob rau hauv aerospace thiab semiconductor industries raws li ib tug thermal tswj cov ntaub ntawv vim nws high thermal conductivity thiab hluav taws xob rwb thaiv tsev zog. Nws kuj tseem siv los ua pwm tso tawm tus neeg sawv cev vim nws lub zog qis qis thiab cov khoom tso tawm zoo heev. Graphite yog dav siv nyob rau hauv steel kev lag luam raws li ib tug lubricant thiab electrode khoom vim nws siab thermal stability thiab hluav taws xob conductivity.
Hais txog qhov zoo, boron nitride thiab graphite ob leeg muab cov khoom siv thermal zoo uas ua rau lawv muaj txiaj ntsig zoo hauv cov ntawv thov kub. Boron nitride cov tshuaj stability thiab tsis kam mus rau oxidation kuj ua rau nws zoo tagnrho rau hnyav ib puag ncig, thaum graphite cov hluav taws xob conductivity thiab thermal stability ua rau nws zoo tagnrho cov khoom siv hluav taws xob.
Hauv kev xaus, boron nitride thiab graphite yog ob yam khoom uas muaj qhov sib txawv uas ua rau lawv tshwj xeeb hauv lawv daim ntawv thov. Ob cov ntaub ntawv muab cov khoom zoo thermal thiab muaj qhov zoo uas ua rau lawv haum rau ntau yam kev lag luam. Yog li ntawd, kev nkag siab txog qhov sib txawv ntawm cov ntaub ntawv no yog qhov tseem ceeb hauv kev xaiv cov khoom tsim nyog rau kev siv tshwj xeeb.