Yuav ua li cas thiaj ua rau cov khoom siv txheej xim ntsuab silicon carbide ua kom zoo dua qub?
Ntau pua meters saum toj no, cua hlob heev tau dhau mus. Yawg Li tau khi nws txoj hlua ruaj ntseg zoo heev thiab pib tshuaj xyuas lub hniav cua loj heev uas nyob ntawm nws xub ntiag. Nws cov ntiv tes ntxhib tau khawb cov cim hnav me me ntawm ntug hniav - qhov chaw uas yooj yim raug cua thiab xuab zeb khawb. Nws ntsia tsis taus, paub tias tsis ntev lub hniav yuav tsum tau txo qis kom kho. Lub txheej tshwj xeeb ntawm qhov chaw ntawm lub hniav yog nws thawj kab tiv thaiv tiv thaiv cua thiab xuab zeb. Thiab hauv qhov kev tiv thaiv no muaj ib qho "pob txha tawv" tseem ceeb -hmoov silicon carbide ntsuab.
"Cov xuab zeb ntsuab 'zoo' no yuav zoo li tsis tseem ceeb, tab sis yog tsis muaj nws, peb cov hniav txheej yuav zoo li ntawv!" Li Laus feem ntau hais rau cov kws kho tshiab. Hauv lub ntiaj teb dav dav ntawm cov ntaub ntawv txheej, cov hmoov silicon carbide ntsuab ua lub luag haujlwm tseem ceeb. Nws tsis yog tsuas yog "lub hauv paus" ntawm cov txheej; nws kuj yog ib qho cuab yeej siv tau ntau yam uas txhim kho nws cov kev ua tau zoo tag nrho.
"Cov Pob Txha Nyuaj" Txhawb nqa "Diamond Shield"
Ntsuab silicon carbideMicropowder, hais yooj yim xwb, yog ultra-pure silicon carbide (SiC) uas raug zom me me ua hmoov me me xwb. Nws qhov tshwj xeeb tshaj yog nws qhov nyuaj! Nws qhov nyuaj ntawm Mohs ncav cuag 9.5, tsuas yog tshaj pob zeb diamond thiab cubic boron nitride xwb, thiab nyuaj dua li cov hlau ib txwm. Ntxiv nws rau ntau yam txheej txheej uas tiv taus kev hnav zoo li ntxiv ntau cov noob pob zeb diamond me me rau hauv av nkos mos.
Xav txog ib qho chaw txheej uas raug ntaus los ntawm cov xuab zeb ceev ceev, cov hlau khib nyiab, lossis cov kua corrosive. Yog tias cov txheej tsuas yog cov resin mos lossis hlau, nws yuav raug hnav thiab lwj hauv ob peb feeb xwb. Txawm li cas los xij, nrog cov hmoov silicon carbide ntsuab uas sib npaug sib npaug hauv cov txheej txheej, cov khoom tawv no ua haujlwm zoo li ntau lub "shields" thiab "fortresses." Lawv nqus thiab faib lub zog ntawm qhov cuam tshuam, ua rau qeeb qeeb ntawm kev hnav thiab poob ntawm cov khoom txheej nws tus kheej. Cov hmoov silicon carbide ntsuab, ib qho txheej tawv, ruaj khov, yog siv rau ntawm phab ntsa sab hauv ntawm cov kav dej khawb av, cov hniav thoob av khawb av, thiab cov khoom siv tseem ceeb ntawm kev khawb roj. Qhov "tawv" no ua rau lub neej ua haujlwm ntawm cov txheej txheej ntev dua, txo qhov zaus thiab tus nqi ntawm kev saib xyuas thiab hloov pauv.
"Cov Hlau Uas Muaj Zog" Ua Rau Lub Cev Muaj Zog
Hmoov silicon carbide ntsuab ua ntau yam ntxiv tsis yog tsuas yog muab lub zog xwb. Nws kuj tseem ua kom cov txheej txheej muaj zog.Cov ntaub ntawv txheej, tshwj xeeb tshaj yog cov uas ua los ntawm polymer xws li epoxy thiab polyurethane, feem ntau muaj lub zog tsawg, kev ruaj khov, thiab kev tiv taus cua sov. Cov hmoov silicon carbide ntsuab ua haujlwm zoo li cov hlau mesh ntxiv rau hauv cov pob zeb, ua rau cov khoom siv kho tshuab ntawm cov txheej txheem zoo dua.
1. Lub Zog thiab Modulus: Cov khoom me me ntawm silicon carbide ntsuab tawv sib txuas nrog lub txheej txheej, ua kom yooj yim hloov thiab tshem tawm cov khoom hnyav. Thaum lub txheej txheej raug cuam tshuam lossis khoov, cov khoom me me no tiv thaiv cov kab nrib pleb kom yooj yim nthuav dav, ua kom lub zog cuam tshuam, lub zog khoov, thiab modulus elastic (kev tawv) ntawm lub txheej txheej zoo dua. Nws zoo li ntxiv pob zeb rau hauv av mos - nws ua rau txoj kev muaj zog dua thiab tiv taus kev ntxhov siab.
2. Kev Ruaj Ntseg ntawm Qhov Ntev thiab Kev Tiv Thaiv Kub:Ntsuab silicon carbide (GSIC)muaj cov coefficient qis ntawm kev nthuav dav thermal thiab kev ruaj khov thermal zoo heev (nws tuaj yeem tiv taus qhov kub tshaj 1,000 degrees Celsius yam tsis muaj kev lwj). Thaum ntxiv rau cov txheej txheej, nws zoo tiv thaiv kev hloov pauv, tawg, thiab txawm tias flaking los ntawm kev nthuav dav thiab kev sib cog lus tsis sib xws hauv qhov chaw kub thiab txias sib hloov. Qhov no yog qhov tseem ceeb rau cov txheej txheej ua haujlwm hauv qab qhov kub hloov pauv loj lossis xav tau kev kho kub siab. Nws ua kom cov txheej txheej tseem ruaj khov thiab tiv taus kev hloov pauv hauv qab qhov kub hloov pauv.
Ib qho kev sib npaug zoo ntawm "thermal shield" thiab "thermal conductive network"
Cov khoom siv thermal ntawm cov hmoov GSIC ntsuab kuj tau tshawb nrhiav hauv kev lag luam txheej, nrog rau qhov tseem ceeb yog cov kev xav tau ntawm daim ntawv thov.
Kev Rwb Thaiv Kub: Xav txog phab ntsa cua sov lossis lub cav uas yuav tsum tiv taus qhov kub siab. Thaum twgGSICCov hmoov me me tau sib npaug zos hauv cov txheej txheej rwb thaiv tsev kub uas muaj qhov (xws li cov txheej txheej ceramic lossis cov txheej txheej tshwj xeeb), thaum cov hmoov lawv tus kheej muaj cov khoom siv hluav taws xob zoo, lawv kuj ua rau kom muaj kev hloov pauv ntawm txoj kev ntws cua sov hauv cov txheej txheej. Lawv kuj ua haujlwm sib koom tes nrog cov qhov hws kom tiv thaiv tau cua sov kom tsis txhob nkag mus rau hauv cov txheej txheej sai sai. Qhov no zoo li kev tsim ib lub maze ntawm phab ntsa uas muaj ntau lub cib me me rwb thaiv tsev (cov khoom me me silicon carbide) thiab cua ntawm lub cub tawg thiab lub ntiaj teb sab nraud, ua rau cov txheej txheej rwb thaiv tsev kub zoo dua.
Kev Ua Kom Kub Dua: Ntawm qhov tod tes, rau cov txheej txheej encapsulation khoom siv hluav taws xob lossis qee cov txheej txheej uas tiv taus hnav uas xav tau kev ua kom kub sai, hmoov silicon carbide ntsuab dhau los ua "kws tshaj lij ua kom kub." Nws cov thermal conductivity siab dua li ntawm feem ntau cov polymers thiab cov hlau substrates. Thaum nws tsim ib lub network thermal zoo hauv lub txheej, nws ua haujlwm zoo li ntau qhov "kev loj," sai sai ua kom kub sab hauv mus rau qhov chaw ntawm lub txheej thiab ua kom nws tsis kub, tiv thaiv cov khoom siv overheating thiab ua tsis tiav. Nws zoo li thov ib txheej ntawm "thermal paste" infused nrog cov khoom ua kom kub zoo rau ntawm qhov chaw ntawm lub chip kub.