Silicon carbide (SIC) yog cov khoom siv ntawm kev xaiv hauv ntau cov ntawv thov muaj kev lag luam vim nws qhov kev nyuaj, thermal tsis sib xws, thiab tshuaj lom neeg kuj. Ntawm nws ntau cov foos, silicon carbide lub leeg yog tshwj xeeb yog muaj nuj nqis rau lawv cov kev ua kom ruaj khov thiab kev ua tau zoo nyob rau hauv cov chaw hnyav. Kab lus no yuav delve rau hauv cov txheej txheem nyuaj ntawm kev tsim khoomSilicon Carbide Hlis, tsom rau kev tsim cov tshuaj tiv thaiv-sintered silicon carbide ceramic hlab.
To kev to taub Silicon Carbide
Ua ntej peb hais rau hauv kev tsim khoom, nws yog ib qho tseem ceeb kom nkag siab dab tsi silicon carbide yog. Silicon carbide yog qhov sib txuas ntawm silicon thiab carbon uas yog paub rau nws cov khoom tshwj xeeb. Nws yog ib qho semiconductor uas tiv taus qhov kub siab, oxidation, thiab corrosion. Cov khoom siv ua silicon carbide lub cev zoo tagnrho rau kev siv hauv kev lag luam xws li aerospace, thiab siv tshuaj lom neeg.
Npaj Raw Npaj
Thawj kauj ruam hauv kev tsim cov silicon carbide cov hlab yog los npaj cov khoom siv raw. Cov hmoov silicon zoo thiab cov hmoov carbon hmoov ua kom muaj txiaj ntsig rau kev ua haujlwm zoo-sinteron carbide (RBSC). Lub purity ntawm cov hmoov no yog qhov tseem ceeb; Ib qho impurities yuav cuam tshuam qhov zoo ntawm cov khoom kawg. Ib qho ntxiv, qhov me me faib ntawm cov hmoov yuav tsum tau ua tib zoo tswj hwm. Ib qho kev sib dhos kom ruaj khov kom meej meej kom cov khoom siv reacts tusyees thaum lub sijhawm Sintering, ua rau muaj cov khoom kawg, muaj zog zog.
Cov khoom xyaw thiab kev sib xyaw
Thaum cov khoom siv raw yog npaj, kauj ruam tom ntej yog batching thiab sib xyaw. Tus txheej txheem no cuam tshuam qhov tseeb tswj qhov sib piv ntawm silicon hmoov rau cov hmoov carbon hmoov. Qhov tseeb piv yog qhov tseem ceeb vim tias nws txiav txim cov tshuaj lom neeg uas yuav tshwm sim thaum sintering. Ua kom huv si cov hmoov nplej kom ntseeg tau tias yog qhov tseem ceeb yog qhov tseem ceeb kom ua tiav cov khoom lag luam uas muaj kev sib tw ua kom zoo sib xws. Kauj ruam yog qhov tseem ceeb; Ib qho kev sib cuam tshuam hauv qhov sib xyaw tuaj yeem ua rau tsis xws luag nyob rau hauv qhov kawg silicon carbide raj.
Txoj kev tsim cov yeeb nkab puab
Thaum cov kev sib txuas thiab kev sib xyaw ua tiav tiav, cov kauj ruam tom ntej yog los ua cov yeeb nkab. Qhov no tuaj yeem ua tiav los ntawm ntau txoj kev, suav nrog txias isostatic nias (CIP) lossis extrusion. CIP yuav cuam tshuam nrog kev ua raws li cov hmoov zoo siab rau cov hmoov sib xyaw hauv kev tuag, ua rau muaj cov duab sib xyaw thiab ua kom zoo. Lwm txoj kev, extrusion tso cai rau kev ua tas mus li ntawm cov khoom siv, uas yog tshwj xeeb tshwj xeeb rau kev tsim cov kav dej ntev ntev. Qhov kev xaiv ntawm cov qauv ntawm cov qauv yog nyob ntawm qhov loj me thiab cov lus qhia tshwj xeeb ntawm cov khoom kawg.
Sintering txheej txheem
Cov txheej txheem Sintering yog qhov twg cov khawv koob tshwm sim. Cov raj Silicon carbide tau muab tso rau hauv cov cua sov kub nrog nruj tswj cov cua sov kub thiab tuav lub sijhawm. Nyob rau theem no, cov hmoov sillicon hmoov thiab carbon hmoov tshuaj tshuaj tsuag ua cov qauv ntom ntom nti. Sinining kub feem ntau yog 1400 ° C thiab 2000 ° C, nyob ntawm cov kev tshwj xeeb thiab cov khoom xav tau ntawm cov khoom kawg. Cov kauj ruam no yog qhov tseem ceeb heev vim tias nws txiav txim siab cov khoom siv zog thiab thermal ruaj khov ntawm cov silicon carbide raj.
Kev ua haujlwm tom ntej
Tom qab cov txheej txheem Sintering tiav lawm, lub silicon carbide raj fresgoes tom qab ua. Qeb no suav nrog machining thiab nto polishing kom tau raws kev pom tseeb thiab cov cai ua kom zoo. Machining yuav suav nrog kev txiav, kev sib tsoo lossis txav mus kom ua tiav qhov ntev, thaum lub npoo polishing tau txhim kho thiab ua haujlwm ntawm lub raj. Kev ua tom qab yog qhov tseem ceeb los xyuas kom meej tias cov khoom kawg tau raws cov qauv kev lag luam thiab cov neeg yuav khoom tshwj xeeb.
Kev ntsuas kev ntsuas zoo
Thoob plaws cov txheej txheem, peb siv kev ntsuas ntau yam kom ntseeg tau tias txoj hlua Silicon Carbide ua raws li cov qauv xav tau. Qhov no suav nrog kev ntsuas cov khoom huv ntawm cov khoom siv raw, tshuaj xyuas qhov sib xws ntawm cov txheej txheem sib xyaw, thiab kuaj thaum thiab tom qab sintering. Cov tswv yim tshaj lij xws li xoo hluav taws xob sib txawv thiab ntsuas hluav taws xob kev siv tau tuaj yeem txheeb xyuas cov micrbide ntawm cov qauv kev ua tau zoo.
Daim Ntawv Thov ntawm Silicon Carbide Tube
Silicon carbide txoj hlab yog siv nyob rau hauv ntau cov ntawv thov vim lawv cov khoom tau zoo heev. Hauv kev lag luam ua lag luam kev lag luam, lawv tau siv los piav cov kua ntshav, thaum nyob hauv lub tshuab aerospace, lawv tau siv los ua cov khoom siv hauv qhov chaw siab. Ntxiv rau, silicon carbide lub leeg tau siv nyob rau hauv cov ntawv thov kev siv hluav taws xob, xws li roj tshuab hluav taws xob thiab roj turbines, qhov lawv muaj peev xwm tiv taus cov mob hnyav yog qhov tsis muaj peev xwm.
Hauv cov ntsiab lus
Kev tsim cov silicon carbide lub leeg yog ib txoj kev nyuaj thiab ua kom zoo mloog kom nthuav dav txhua theem. Los ntawm kev npaj ntawm cov khoom siv raw zoo rau kev tswj cov txheej txheem Sintering, txhua kauj ruam tseem ceeb tshaj plaws hauv kev ua tau zoo thiab ua tau zoo ntawm cov khoom kawg. Raws li kev lag luam txuas ntxiv mus nrhiav cov khoom siv uas tuaj yeem tiv taus cov kev mob hnyav, ua rau nws tseem ceeb tshaj kom nkag siab txog lawv cov txheej txheem ntau lawm. Seb siv rau kev siv cov kev siv tshuab lossis qib siab tshaj plaws, silicon carbide cov khoom siv nyob hauv cov ntaub ntawv txuj ci tseem ceeb, muab kev ntseeg siab thiab muaj peev xwm ua tau nyob hauv ntau qhov chaw ib puag ncig.
Lub sij hawm ncua: Mar-26-2025