Hauv kev tshawb nrhiav cov ntaub ntawv siab heev, cov kws tshawb fawb yeej ib txwm tshawb nrhiav cov ciam teb tshiab los nrhiav cov khoom uas muaj cov yam ntxwv zoo tshaj plaws uas yuav hloov pauv ntau yam kev lag luam. Ib qho khoom zoo kawg nkaus no yog hexagonal boron nitride (h-BN). Feem ntau hu ua "cov khoom siv xav tsis thoob," hexagonal boron nitride tau nce siab ua ib yam khoom siv tau ntau yam nrog ntau yam kev siv. Cia peb kawm tob dua txog lub ntiaj teb ntawm hexagonal boron nitride thiab tshawb nrhiav nws cov yam ntxwv tshwj xeeb thiab lub peev xwm zoo siab.
Hexagonal boron nitride yog dab tsi?
Hexagonal boron nitride yog ib qho sib xyaw ua ke ntawm cov boron thiab nitrogen atoms sib npaug zos uas teeb tsa ua ib lub hexagonal lattice. Nws zoo ib yam li graphite, tab sis nws cov yam ntxwv txawv ntawm cov khoom siv carbon.
Kev ua tau zoo heev ntawm cov thermal conductivity:
Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm h-BN yog nws cov thermal conductivity siab. Hexagonal boron nitride tuaj yeem ua kom sov tau zoo thaum tswj hwm hluav taws xob rwb thaiv tsev. Cov yam ntxwv no ua rau nws muaj txiaj ntsig zoo hauv kev lag luam xws li aerospace, electronics thiab thermal management.
Hauv kev lag luam hluav taws xob, hexagonal boron nitridetau siv ua cov khoom siv cua sov ua haujlwm tau zoo heev uas muaj peev xwm tshem tawm cov cua sov uas tsim los ntawm cov khoom siv hluav taws xob me me. Cov khoom siv thermal conductivity zoo heev ua kom cov khoom siv hluav taws xob nyob txias, yog li ua rau lawv cov kev ua haujlwm thiab lub neej ntev dua.
Lubrication thiab txheej:
Hexagonal boron nitride kuj muaj cov yam ntxwv zoo heev rau kev lubrication. Nws muaj cov coefficient tsawg ntawm kev sib txhuam, ua rau nws yog cov roj nplua nyeem qhuav zoo heev. Cov yam ntxwv no tau pom muaj kev siv hauv ntau yam lag luam, suav nrog tsheb, aerospace thiab kev tsim khoom.
Ntxiv mus, h-BN siv dav ua ib txheej tiv thaiv kev nplaum hauv cov ntawv thov uas muaj cov txheej txheem kub siab. Lub peev xwm ntawm cov khoom siv los tiv taus qhov kub thiab txias heev yam tsis muaj kev cuam tshuam nrog lwm yam khoom ua rau nws zoo tagnrho rau cov txheej txheem ntawm crucibles, pwm, thiab lwm yam khoom siv siv hauv kev casting hlau thiab iav.
Cov Khoom Siv Dielectric thiab Electronics:
Vim nws cov peev xwm rwb thaiv hluav taws xob, h-BNtau pom cov ntawv thov hauv cov khoom siv hluav taws xob. Nws qhov kev tiv taus hluav taws xob siab ua rau muaj kev tsim cov insulators txhim khu kev qha thiab thermally conductive. Qhov no muab cov cib fim rau kev tsim cov khoom siv hluav taws xob zoo, me me xws li cov transistors muaj zog thiab cov circuits sib xyaw.
Cov khoom siv zoo:
Hexagonal boron nitridefeem ntau siv ua lub hauv paus rau ntau yam txheej txheem loj hlob. Nws cov qauv siv lead ua rau lub hauv paus tsim nyog rau kev loj hlob ntawm lwm cov ntaub ntawv, suav nrog graphene thiab lwm yam ntaub ntawv ob-seem. Qhov no txhim kho qhov zoo ntawm cov khoom siv thiab ua rau txoj hauv kev rau cov ntawv thov hluav taws xob thiab optoelectronic tshiab.
xaus lus:
Nrog rau cov khoom zoo heev xws li kev ua tau zoo ntawm cov cua sov, lubrication muaj peev xwm, dielectric muaj peev xwm thiab cov khoom zoo ntawm cov substrate, hexagonal boron nitride muaj peev xwm loj heev hauv ntau yam lag luam. Thaum cov kws tshawb fawb txuas ntxiv tshawb nrhiav thiab kawm txog cov khoom siv zoo kawg no, nws yuav pom ntau daim ntawv thov zoo siab dua yav tom ntej.
Txij li kev tswj cua sov thiab lubrication hauv kev tsim khoom mus rau kev txhim kho cov khoom siv hluav taws xob thiab cov khoom siv loj hlob zoo, hexagonal boron nitride muaj ntau txoj hauv kev los txhim kho cov thev naus laus zis uas twb muaj lawm thiab ua kom muaj kev daws teeb meem tshiab. Raws li lub ntiaj teb lees txais cov ntaub ntawv ruaj khov thiab siab heev, hexagonal boron nitride yuav ua lub luag haujlwm tseem ceeb hauv kev tsim lub neej yav tom ntej.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-13-2023