Cov lus nug nquag nug txog Boron Nitride

1. Dab tsi yoghexagonal boron nitride?

Boron nitride ceramic yog cov khoom siv tsis-oxide ceramic nrog ntau yam khoom zoo heev. Ua ntej, nws muaj lub siab melting point, mus txog 3000 degree los yog ntau tshaj, yog li nws muaj kev ruaj ntseg zoo thiab corrosion kuj nyob rau hauv high-temperature ib puag ncig. Thib ob, boron nitride ceramics muaj tshuaj lom neeg ruaj khov thiab tuaj yeem nyob ruaj khov hauv ntau qhov chaw tshuaj lom neeg yam tsis muaj kev cuam tshuam nrog cov tshuaj. Tsis tas li ntawd, boron nitride ceramics muaj cov thermal conductivity zoo thiab thermal stability, uas tuaj yeem siv los tsim cov khoom siv thermal thiab cov khoom siv hluav taws xob. Thaum kawg, boron nitride ceramics kuj muaj cov hluav taws xob zoo thiab cov khoom siv hluav taws xob, tuaj yeem siv los tsim cov khoom siv hluav taws xob thiab hluav taws xob.
2. Hexagonal boron nitride nyuaj npaum li cas?

Lub hardness ntawm hexagonal boron nitride yog siab heev, tus qauv feem ntau yog siv los ntsuas qhov hardness ntawm ib cov khoom yog Mohs hardness, thiab Mohs hardness ntawm hexagonal boron nitride yog hais txog 2-3 GPa. Txawm hais tias qhov no yog qis dua ntawm pob zeb diamond thiab cubic boron nitride, nws tseem ntau dua li ntawm lwm cov ntaub ntawv. Tsis tas li ntawd, qhov indentation hardness ntawm hexagonal boron nitride yog 7-8 GPa, uas kuj ua pov thawj nws cov hardness siab.
3. Dab tsi yog daim ntawv thov rau hardness ntawm hexagonal boron nitride? Vim nws cov hardness heev thiab hnav tsis kam, hexagonal boron nitride yog dav siv nyob rau hauv ntau yam teb, xws li cov cuab yeej abrasive, txheej cov ntaub ntawv, kub tiv thaiv, casting thiab lwm yam. Ntawm lawv, abrasives yog ib qho ntawm feem ntau siv teb ntawm hexagonal boron nitride, uas yog zoo heev nyob rau hauv polishing, txiav thiab sib tsoo. Nyob rau tib lub sijhawm, nyob rau hauv cov ntaub ntawv tiv thaiv kub, hexagonal boron nitride kuj qhia tau hais tias kev ua tau zoo, uas tuaj yeem tswj kev ruaj ntseg ntawm qhov kub thiab txias, tuaj yeem siv rau hauv aerospace thiab lub zog teb.
4. Cov yam ntxwv cuam tshuam rau lub hardness ntawm hexagonal boron nitride?
(1) txoj kev npaj: sintering txoj kev, siab thiab kub muaj feem xyuam rau lub hardness ntawm hexagonal boron nitride ceramics. sintering txoj kev, kev siv kub thiab siab sintering ntawm hexagonal boron nitride ceramic hardness yog siab dua.
(2) Microstructure: lattice qauv ntawm hexagonal boron nitride ceramics, grain loj, theem ciam teb thiab siv lead ua ciam thiab lwm yam microstructural yam tseem ceeb cuam tshuam rau hardness. Optimization ntawm hardness tuaj yeem ua tiav los ntawm kev tswj cov microstructure.
(3) Lattice defects: lattice defects xws li nitrogen vacancies, boron vacancies thiab lattice distortions yuav txo cov hardness ntawm hexagonal boron nitride ceramics. Los ntawm kev tswj cov tiam thiab kev faib tawm ntawm qhov tsis xws luag, lub hardness ntawm hexagonal boron nitride ceramics tuaj yeem txhim kho.
Raws li cov khoom siv ceramic zoo, hexagonal boron nitride ceramics muaj peev xwm zoo rau kev siv. Txoj kev kawm ntawm hardness thiab nws cov influencing yam yuav pab tau optimize cov kev ua tau zoo ntawm hexagonal boron nitride ceramics thiab muab theoretical kev taw qhia rau kev siv. Nrog rau kev txhim kho txuas ntxiv ntawm kev npaj thev naus laus zis thiab kev ua tiav, hexagonal boron nitride ceramics yuav ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm siab ntawm ceramics yav tom ntej.

Shengyang New Material Co., Ltd. tau cog lus rau kev tsim cov khoom lag luam boron nitride thiab boron nitride ua tiav, thiab tuaj yeem kho ntau yam boron nitride insulating ceramic qhov chaw raws li cov neeg siv khoom xav tau. Tiv tauj peb yog tias tsim nyog.
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