Hauv kev tsim khoom lag luam niaj hnub no, cov raj xa dej zoo li "cov hlab ntsha" ntawm tib neeg lub cev, ua cov haujlwm tseem ceeb ntawm kev thauj cov kub kub thiab corrosive media. Covsilicon carbide (SiC) hauv ob sab phluthev naus laus zis zoo li muab txheej txheej ntawm cov cuab yeej ua haujlwm siab ntawm cov "cov hlab ntsha", muab cov kav dej kom muaj zog, tiv taus corrosion, thiab kub-resistant. Qhov no zoo li yooj yim tiv thaiv txheej tiv thaiv kev ua haujlwm ruaj khov ntawm cov kav dej li cas?
1, Khoom siv: Lub "innate txuj ci" ntawm silicon carbide
Silicon carbide yog lub npe hu ua "kev lag luam dub pob zeb diamond", thiab nws cov qauv atomic yog peb-dimensional network siv lead ua los ntawm covalent bonds ntawm silicon thiab carbon, endowing nws nrog peb lub zog tseem ceeb:
1. Pob zeb diamond qib hardness (thib ob tsuas yog pob zeb diamond hauv Mohs hardness), uas tuaj yeem tiv taus qhov yaig
2. Super muaj zog tshuaj inertness, resistant rau corrosive media xws li acids, bases, thiab ntsev
3. Cov thermal stability zoo heev, tswj cov qauv kev ruaj ntseg txawm tias qhov kub thiab txias ntawm 1350 ℃
Cov khoom siv no ua rau nws yog cov khoom siv tiv thaiv zoo tshaj plaws rau kev ua haujlwm hnyav.
2, Kev tiv thaiv mechanism: Triple defense system
Thaum cov silicon carbide hauv ob sab phlu adheres rau sab hauv phab ntsa ntawm lub raj xa dej, nws tsim ntau txheej tiv thaiv:
Lub cev thaiv txheej: ntom silicon carbide crystals ncaj qha cais qhov nruab nrab ntawm kev sib cuag nrog lub cev hlau
Cov txheej txheem tshuaj lom neeg ruaj khov: tsim cov yeeb yaj kiab oxide tiv thaiv los ntawm cov tshuaj tiv thaiv passivation, nquag tiv thaiv corrosion
Qhov kev tiv thaiv kev sib xyaw no tso cai rau cov kav dej kom muaj kev ncaj ncees txawm tias nyob rau hauv cov xwm txheej hnyav xws li muaj zog corrosion, hnav siab, thiab qhov kub thiab txias.
3 、 Qhov zais cia rau kev ua haujlwm ntev: kev kho tus kheej muaj peev xwm
Cov kev tshawb fawb tshiab tau pom tias silicon carbide muaj qhov tshwj xeeb ntawm qhov chaw recombination muaj peev xwm nyob rau hauv cov kev ua haujlwm tshwj xeeb. Thaum kev puas tsuaj microscopic tshwm sim, cov dawb silicon atoms ntawm cov khoom siv saum npoo yuav rov kho dua nyob rau hauv qhov chaw kub kub, ib nrab kho qhov tsis xws luag. Qhov no feature ho txuas ntxiv lub neej kev pab cuam ntawm lub hauv ob sab phlu thiab txo txij nkawm zaus.
4 、 Cov txiaj ntsig tsis pom: tag nrho cov nqi ntawm lub neej
Piv nrog cov ntaub ntawv hauv ob sab phlu, silicon carbide hauv ob sab phlu coj qhov zais tab sis muaj txiaj ntsig zoo rau kev lag luam kev lag luam los ntawm kev txo tus naj npawb ntawm kev kaw rau kev saib xyuas, txo qhov kev pheej hmoo ntawm cov pa phem nruab nrab, thiab txuas ntxiv lub voj voog hloov pauv. Tshwj xeeb tshaj yog nyob rau hauv cov teb ntawm cov tshuaj zoo thiab cov khoom siv hluav taws xob tshiab npaj, tus nqi ntawm cov khoom siv purity ruaj khov yog qhov nyuaj dua los ntsuas nrog cov ntaub ntawv yooj yim.
Nrog rau kev txhim kho kev lag luam thev naus laus zis mus rau kev ua haujlwm zoo dua thiab ib puag ncig tus phooj ywg, silicon carbide hauv ob sab phlu thev naus laus zis tau hloov zuj zus los ntawm "kev tiv thaiv tshwj xeeb" mus rau "tus qauv teeb tsa". Qhov kev daws teeb meem no ua ke nrog cov khoom siv science thiab engineering txawj ntse ntsiag to tiv thaiv "lifeline" ntawm kev lag luam niaj hnub no thiab dhau los ua ib qho tseem ceeb kev txhawb nqa rau kev txhim kho qhov zoo thiab kev ua haujlwm ntawm cov txheej txheem kev lag luam.
Post lub sij hawm: Apr-26-2025