SiC txheej yog dab tsi?

 

Dab tsi yog Silicon Carbide SiC Txheej?

Silicon Carbide (SiC) txheej yog cov thev naus laus zis thev naus laus zis uas muab kev tiv thaiv tshwj xeeb thiab kev ua tau zoo nyob rau hauv qhov kub thiab txias thiab tshuaj lom neeg. Cov txheej txheem no yog siv rau ntau yam ntaub ntawv, suav nrog graphite, ceramics, thiab hlau, los txhim kho lawv cov khoom, muab kev tiv thaiv zoo tshaj plaws tiv thaiv corrosion, oxidation, thiab hnav. Cov khoom tshwj xeeb ntawm SiC txheej, suav nrog lawv cov purity siab, zoo thermal conductivity, thiab cov qauv kev ncaj ncees, ua rau lawv zoo tagnrho rau kev siv hauv kev lag luam xws li semiconductor manufacturing, aerospace, thiab high-performance cua sov technologies.

 

Qhov zoo ntawm silicon carbide txheej

SiC txheej muaj ntau yam txiaj ntsig tseem ceeb uas teeb nws sib nrug los ntawm cov txheej txheem tiv thaiv ib txwm:

• -High Density & Corrosion Resistance
• Lub cubic sic qauv kom muaj txheej txheej kub-ntom ntom ntom ntom ntom ntom, dav txhim kho corrosion tsis kam thiab nthuav cov khoom sib xyaw ua ke.
• -Txoj kev them nyiaj tshwj xeeb ntawm cov duab sib txawv
• SiC txheej yog nto moo rau nws cov kev pab zoo heev, txawm nyob rau hauv me me qhov muag tsis pom qhov qhov tob txog li 5 hli, muab cov tuab tuab mus txog 30% ntawm qhov tob tshaj plaws.
• -Customizable Nto Roughness
• Cov txheej txheem txheej yog hloov tau, tso cai rau qhov sib txawv ntawm qhov roughness kom haum rau cov ntawv thov tshwj xeeb.
• -High Purity Txheej
• Ua tiav los ntawm kev siv cov roj purity siab, SiC txheej tseem muaj qhov tshwj xeeb ntshiab, nrog cov impurity theem feem ntau qis dua 5 ppm. Qhov no purity yog ib qho tseem ceeb rau high-tech industries uas yuav tsum tau precision thiab tsawg tsawg.
• -Thermal stability
• Silicon carbide ceramic txheej tuaj yeem tiv taus qhov kub thiab txias, nrog kev ua haujlwm siab tshaj plaws txog li 1600 ° C, ua kom muaj kev ntseeg siab hauv qhov kub thiab txias.

 

Daim ntawv thov ntawm SiC txheej

SiC txheej yog dav siv thoob plaws ntau yam kev lag luam rau lawv qhov kev ua tau zoo tsis sib xws hauv cov cheeb tsam nyuaj. Cov ntawv thov tseem ceeb suav nrog:

• -LED & Hnub Ci Kev Lag Luam
• Cov txheej kuj tseem siv rau cov khoom siv hauv LED thiab lub hnub ci tsim hluav taws xob, qhov chaw siab purity thiab kub tsis kam yog qhov tseem ceeb.
• -High-kub cua sov yees
• SiC-coated graphite thiab lwm yam ntaub ntawv yog ua hauj lwm nyob rau hauv cov cua kub ntsiab rau furnaces thiab reactors siv nyob rau hauv ntau yam kev lag luam txheej txheem.
• -Semiconductor Crystal Loj hlob
• Nyob rau hauv semiconductor siv lead ua kev loj hlob, SiC coatings yog siv los tiv thaiv cov khoom koom nrog kev loj hlob ntawm silicon thiab lwm yam semiconductor crystals, muab siab corrosion kuj thiab thermal stability.
• -Silicon thiab SiC Epitaxy
• SiC coatings yog siv rau cov khoom hauv epitaxial txoj kev loj hlob ntawm silicon thiab silicon carbide (SiC). Cov txheej txheem no tiv thaiv oxidation, paug, thiab xyuas kom zoo ntawm cov txheej txheem epitaxial, uas yog ib qho tseem ceeb heev rau kev tsim cov khoom siv hluav taws xob semiconductor.
• -Oxidation thiab Diffusion txheej txheem
• SiC-coated Cheebtsam yog siv nyob rau hauv oxidation thiab diffusion txheej txheem, qhov uas lawv muab ib tug zoo barrier tiv thaiv pliaj impurities thiab txhim khu kev ncaj ncees ntawm cov khoom kawg. Cov coatings txhim kho lub neej ntev thiab kev ntseeg siab ntawm cov khoom raug oxidation kub los yog diffusion kauj ruam.

 

Cov khoom tseem ceeb ntawm SiC txheej

SiC txheej muaj ntau yam khoom uas txhim khu kev ua haujlwm thiab ua haujlwm ntev ntawm sic coated Cheebtsam:

• -Crystal Structure
• Cov txheej yog feem ntau ua nrog aβ 3C (cubic) siv lead uaqauv, uas yog isotropic thiab muaj kev pom kev tiv thaiv corrosion.
• - Qhov ntom thiab porosity
• SiC coatings muaj qhov ntom ntom3200 kg / m³thiab nthuav tawm0% porosity, kom ntseeg tau tias helium leak-tight kev ua tau zoo thiab zoo corrosion kuj.
• -Thermal thiab hluav taws xob khoom
• SiC txheej muaj cov thermal conductivity siab(200 W/m·K)thiab zoo heev hluav taws xob resistivity(1MΩ·m), ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau kev tswj xyuas kom sov thiab hluav taws xob rwb thaiv tsev.
• - Mechanical Strength
• Nrog ib tug elastic modulus ntawm450 GPa, SiC coatings muab cov cuab yeej zoo tshaj plaws, txhim kho cov txheej txheem kev ncaj ncees ntawm cov khoom.

 

SiC silicon carbide txheej txheej txheem

SiC txheej yog siv los ntawm Chemical Vapor Deposition (CVD), txheej txheem uas muaj cov thermal decomposition ntawm gases kom tso nyias SiC txheej ntawm substrate. Txoj kev tso nyiaj tso cai no tso cai rau kev loj hlob siab thiab kev tswj xyuas meej ntawm txheej txheej, uas tuaj yeem ua tau los ntawm10 µm rau 500 µm, nyob ntawm daim ntawv thov. Cov txheej txheem txheej kuj ua kom muaj kev tiv thaiv zoo ib yam, txawm tias nyob rau hauv cov geometries nyuaj xws li qhov me me lossis qhov tob, uas feem ntau nyuaj rau cov txheej txheem txheej txheej.

 

Cov ntaub ntawv tsim nyog rau SiC txheej

SiC txheej tuaj yeem siv rau ntau yam khoom siv, suav nrog:

• - Graphite thiab Carbon Composites
• Graphite yog qhov nrov substrate rau SiC txheej vim nws cov thermal thiab hluav taws xob zoo heev. SiC txheej infiltrates cov graphite cov qauv ntxeem tau, tsim kom muaj kev sib raug zoo thiab muab kev tiv thaiv zoo tshaj.
• -Ceramics
• Silicon-based ceramics xws li SiC, SiSiC, thiab RSiC tau txais txiaj ntsig los ntawm SiC txheej, uas txhim kho lawv cov kev tiv thaiv corrosion thiab tiv thaiv kom tsis txhob muaj qhov tsis huv.

 

Vim li cas thiaj xaiv SiC Txheej?

Cov txheej txheej saum npoo muab ntau yam kev daws teeb meem thiab raug nqi rau kev lag luam xav tau siab purity, corrosion kuj, thiab thermal stability. Txawm hais tias koj tab tom ua haujlwm hauv semiconductor, aerospace, lossis cov cua sov ua haujlwm siab, SiC coatings xa cov kev tiv thaiv thiab kev ua haujlwm koj xav tau kom muaj kev ua haujlwm zoo. Kev sib xyaw ua ke ntawm cov qauv kub ceev, cov khoom siv tau yooj yim, thiab lub peev xwm los ua cov txheej txheem geometries kom ntseeg tau tias cov ntsiab lus sic coated tuaj yeem tiv taus txawm tias qhov chaw nyuaj tshaj plaws.

Yog xav paub ntxiv los yog sib tham txog seb silicon carbide ceramic txheej tuaj yeem pab tau koj daim ntawv thov tshwj xeeb, thovtiv tauj peb.