Silicon carbide (SiC) yog cov khoom siv hauv ntau hom kev lag luam vim nws qhov nyuaj heev, thermal stability, thiab tshuaj tiv thaiv. Ntawm nws ntau hom, silicon carbide raj yog tshwj xeeb tshaj yog muaj nuj nqis rau lawv cov durability thiab kev ua tau zoo nyob rau hauv ib puag ncig hnyav. Kab lus no yuav delve rau hauv cov txheej txheem ntawm kev tsim khoomsilicon carbide tubes, tsom rau kev tsim cov tshuaj tiv thaiv-sintered silicon carbide ceramic raj.
Nkag siab txog Silicon Carbide
Ua ntej peb delve rau hauv cov txheej txheem tsim, nws yog ib qho tseem ceeb kom nkag siab tias silicon carbide yog dab tsi. Silicon carbide yog qhov sib xyaw ntawm silicon thiab carbon uas paub txog nws cov khoom tshwj xeeb. Nws yog ib qho khoom siv hluav taws xob uas tiv taus kub kub, oxidation, thiab corrosion. Cov khoom no ua rau cov raj silicon carbide zoo tagnrho rau kev siv hauv kev lag luam xws li aerospace, tsheb, thiab kev ua tshuaj lom neeg.
Kev npaj raw khoom
Thawj kauj ruam hauv kev tsim cov raj silicon carbide yog los npaj cov khoom siv raw. Cov hmoov zoo silicon thiab carbon hmoov yog qhov yuav tsum tau ua ua ntej rau kev ua haujlwm siab-sintered silicon carbide (RBSC). Lub purity ntawm cov hmoov no tseem ceeb heev; tej impurities yuav cuam tshuam rau qhov zoo ntawm cov khoom kawg. Tsis tas li ntawd, qhov particle loj faib ntawm cov hmoov yuav tsum tau ua tib zoo tswj. Ib qho me me me me kom ntseeg tau tias cov khoom siv tau zoo sib xws thaum lub sijhawm ua haujlwm sintering, ua rau cov khoom denser, muaj zog dua zaum kawg.
Cov khoom xyaw thiab sib tov
Thaum cov ntaub ntawv raw tau npaj, cov kauj ruam tom ntej yog batching thiab sib tov. Cov txheej txheem no suav nrog kev tswj xyuas qhov sib piv ntawm silicon hmoov rau carbon hmoov. Qhov tseeb piv yog qhov tseem ceeb vim nws txiav txim siab cov tshuaj tiv thaiv uas yuav tshwm sim thaum sintering. Ua tib zoo sib xyaw cov hmoov txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws yog qhov tsim nyog kom ua tiav cov txheej txheem silicon carbide. Cov kauj ruam no tseem ceeb heev; ib qho kev tsis sib haum xeeb hauv qhov sib tov tuaj yeem ua rau muaj qhov tsis xws luag hauv qhov kawg silicon carbide raj.
Kev tsim cov yeeb nkab
Thaum cov txheej txheem batching thiab sib tov ua tiav, cov kauj ruam tom ntej yog los tsim cov yeeb nkab. Qhov no tuaj yeem ua tiav los ntawm ntau txoj hauv kev, suav nrog txias isostatic nias (CIP) lossis extrusion. CIP suav nrog kev siv lub siab tsis sib xws rau cov hmoov sib xyaw hauv qhov tuag, ua rau muaj kev sib cog lus thiab zoo tsim. Xwb, extrusion tso cai rau cov khoom siv txuas ntxiv mus, uas yog qhov tshwj xeeb tshaj yog rau kev tsim cov kav dej ntev. Qhov kev xaiv ntawm shaping txoj kev nyob ntawm qhov xav tau loj thiab specifications ntawm cov khoom kawg.
Sintering txheej txheem
Cov txheej txheem sintering yog qhov twg cov khawv koob tshwm sim. Lub raj tsim silicon carbide tau muab tso rau hauv lub qhov cub kub kub nrog kev tswj xyuas cua kub ceev thiab tuav lub sijhawm. Thaum lub sij hawm no, silicon hmoov thiab carbon hmoov reacts chemically tsim ib tug ntom silicon carbide qauv. Qhov kub ntawm sintering feem ntau yog nyob nruab nrab ntawm 1400 ° C thiab 2000 ° C, nyob ntawm qhov kev tsim tshwj xeeb thiab cov khoom xav tau ntawm cov khoom kawg. Cov kauj ruam no yog qhov tseem ceeb vim tias nws txiav txim siab lub zog txhua yam thiab thermal stability ntawm silicon carbide raj.
Tom qab ua tiav technology
Tom qab cov txheej txheem sintering tiav, lub raj silicon carbide tau ua tiav tom qab ua tiav. Cov theem no suav nrog machining thiab nto polishing kom ua tau raws li qhov yuav tsum tau muaj qhov zoo thiab qhov zoo. Machining tej zaum yuav muaj kev txiav, sib tsoo los yog drilling kom ua tiav qhov ntev yuav tsum tau, thaum polishing nto txhim kho qhov zoo nkauj thiab kev ua haujlwm ntawm lub raj. Tom qab ua tiav yog qhov tseem ceeb los xyuas kom meej tias cov khoom kawg ua tau raws li cov qauv kev lag luam thiab cov neeg siv khoom tshwj xeeb.
Kev Tswj Xyuas Zoo
Thoob plaws hauv cov txheej txheem tsim khoom, peb siv cov kev tswj xyuas zoo los xyuas kom meej tias cov raj silicon carbide ua tau raws li cov qauv xav tau. Qhov no suav nrog kev ntsuas qhov purity ntawm cov khoom siv raw, saib xyuas qhov sib xws ntawm cov txheej txheem sib xyaw, thiab tshuaj xyuas thaum lub sijhawm thiab tom qab sintering. Cov tswv yim zoo xws li X-ray diffraction thiab scanning electron microscopy tuaj yeem siv los txheeb xyuas cov qauv ntawm cov silicon carbide kom ntseeg tau tias nws ua tau raws li cov qauv tsim nyog.
Daim ntawv thov ntawm Silicon Carbide Tube
Silicon carbide raj yog siv rau ntau yam kev siv vim lawv cov khoom zoo heev. Hauv kev lag luam tshuaj lom neeg, lawv tau siv los xa cov kua dej corrosive, thaum nyob rau hauv kev lag luam aerospace, lawv tau siv los ua cov khoom hauv qhov chaw kub kub. Tsis tas li ntawd, cov raj silicon carbide tau nce ntxiv hauv kev siv hluav taws xob, xws li nuclear reactors thiab roj turbines, qhov uas lawv muaj peev xwm tiv taus huab cua tsis muaj nuj nqis.
Hauv cov ntsiab lus
Kev tsim cov raj silicon carbide yog cov txheej txheem nyuaj thiab muag heev uas yuav tsum tau ua tib zoo saib xyuas kom meej ntawm txhua theem. Los ntawm kev npaj cov khoom zoo raw khoom mus rau kev tswj cov txheej txheem sintering, txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev ua tau zoo thiab kev ua tau zoo ntawm cov khoom kawg. Raws li kev lag luam txuas ntxiv mus nrhiav cov ntaub ntawv uas tuaj yeem tiv taus qhov hnyav, qhov kev thov rau silicon carbide raj yuav loj hlob, ua rau nws tseem ceeb dua kom nkag siab txog lawv cov txheej txheem tsim khoom. Txawm hais tias siv rau cov ntawv thov kev lag luam lossis kev siv thev naus laus zis, cov raj silicon carbide sawv cev rau kev nce qib hauv cov ntaub ntawv tshawb fawb, muab kev ruaj khov thiab kev ntseeg siab hauv ntau qhov chaw.
Post lub sij hawm: Mar-26-2025