Kodi TaC Coating ndi chiyani?

Mu makampani opanga zinthu za semiconductor omwe akusintha mofulumira, zipangizo zomwe zimawonjezera magwiridwe antchito, kulimba, komanso kugwira ntchito bwino ndizofunikira kwambiri. Chimodzi mwa zinthu zatsopanozi ndi Tantalum Carbide (TaC) coating, yomwe ndi njira yodzitetezera yapamwamba kwambiri yomwe imagwiritsidwa ntchito pazinthu za graphite. Blog iyi ikufotokoza tanthauzo la TaC coating, ubwino wake, komanso momwe imagwiritsidwira ntchito popanga zinthu za semiconductor.

Ⅰ. Kodi TaC Coating ndi chiyani?

Chophimba cha TaC ndi chopangidwa ndi ceramic chopangidwa ndi tantalum carbide (chopangidwa ndi tantalum ndi carbon) chomwe chimayikidwa pamwamba pa graphite. Chophimbacho nthawi zambiri chimagwiritsidwa ntchito pogwiritsa ntchito njira za Chemical Vapor Deposition (CVD) kapena Physical Vapor Deposition (PVD), zomwe zimapangitsa kuti graphite ikhale yolimba komanso yoyera kwambiri.

Zinthu Zofunika Kwambiri za Kuphimba TaC

●Kukhazikika kwa Kutentha Kwambiri: Imapirira kutentha kopitirira 2200°C, ikuposa zipangizo zachikhalidwe monga silicon carbide (SiC), yomwe imawonongeka kuposa 1600°C.

●Kukana Mankhwala: Imalimbana ndi dzimbiri kuchokera ku haidrojeni (H₂), ammonia (NH₃), nthunzi za silikoni, ndi zitsulo zosungunuka, zofunika kwambiri pa malo opangira zinthu za semiconductor.

●Kuyera Kwambiri: Kuchuluka kwa chidetso pansi pa 5 ppm, kuchepetsa zoopsa za kuipitsidwa mu njira zokulira makristalo.

●Kulimba kwa Kutentha ndi Makina: Kumamatira mwamphamvu ku graphite, kufalikira kochepa kwa kutentha (6.3×10⁻⁶/K), ndi kuuma (~2000 HK) kumatsimikizira kukhala ndi moyo wautali pansi pa kutentha.

Ⅱ. Kuphimba kwa TaC mu Kupanga Ma Semiconductor: Ntchito Zofunikira

Zigawo za graphite zophimbidwa ndi TaC ndizofunikira kwambiri popanga zinthu zapamwamba za semiconductor, makamaka pazida za silicon carbide (SiC) ndi gallium nitride (GaN). Nazi njira zofunika kwambiri zogwiritsira ntchito:

1. Kukula kwa SiC Single Crystal

Ma wafer a SiC ndi ofunikira kwambiri pamagalimoto amagetsi ndi zamagetsi. Ma graphite ndi ma susceptor okhala ndi TaC-coated amagwiritsidwa ntchito mu Physical Npor Transport (PVT) ndi High-Temperature CVD (HT-CVD) systems kuti:

● Pewani Kuipitsidwa: Kuchuluka kochepa kwa TaC (monga boron <0.01 ppm vs. 1 ppm mu graphite) kumachepetsa zolakwika mu makristalo a SiC, zomwe zimapangitsa kuti graphite yosaphimbidwa ikhale yolimba (4.5 ohm-cm vs. 0.1 ohm-cm).

● Kuwongolera Kutentha: Kutulutsa kofanana (0.3 pa 1000°C) kumatsimikizira kufalikira kwa kutentha kosalekeza, ndikuwonjezera ubwino wa kristalo.

2. Kukula kwa Epitaxial (GaN/SiC)

Mu ma reactor a Metal-Organic CVD (MOCVD), zinthu zophimbidwa ndi TaC monga zonyamulira ma wafer ndi ma injector:

●Pewani Kuyankha kwa Gasi: Imalimbana ndi kudulidwa ndi ammonia ndi haidrojeni pa 1400°C, kusunga umphumphu wa reactor.

●Sinthani Zokolola: Mwa kuchepetsa kutayika kwa tinthu kuchokera ku graphite, CVD TaC coverage imachepetsa zolakwika mu zigawo za epitaxial, zomwe ndizofunikira kwambiri pa ma LED ogwira ntchito kwambiri komanso zida za RF.

3. Mapulogalamu Ena a Semiconductor

●Zoyatsira Kutentha Kwambiri: Ma ssusceptor ndi ma heater omwe amapanga GaN amapindula ndi kukhazikika kwa TaC m'malo okhala ndi haidrojeni yambiri.

●Kusamalira WaferZinthu zophimbidwa monga mphete ndi zivindikiro zimachepetsa kuipitsidwa kwa chitsulo panthawi yotumiza wafer

Ⅲ. Nchifukwa chiyani TaC Coating Imachita Bwino Kwambiri?

Kuyerekeza ndi zinthu zachikhalidwe kukuwonetsa kupambana kwa TaC:

Deta yochokera ku kufananiza kwa makampani

IV. N’chifukwa chiyani muyenera kusankha dokotala wa ziweto?

Pambuyo popitiliza kuyika ndalama mu kafukufuku ndi chitukuko cha ukadaulo,VetZida zophimbidwa ndi Tantalum carbide (TaC), mongaMphete yowongolera ya TaC yokutidwa ndi graphite, Chotsukira mbale chophimbidwa ndi CVD TaC, Susceptor Yophimbidwa ndi TaC ya Zida za Epitaxy,Tantalum carbide yokutidwa ndi porous graphite zakuthupindiChotsukira cha Wafer chokhala ndi zokutira za TaC, ndi otchuka kwambiri m'misika ya ku Ulaya ndi ku America. VET ikuyembekezera mwachidwi kukhala bwenzi lanu la nthawi yayitali.