Kodi kupaka sic ndi chiyani?

Silicon Carbidendi gulu lolimba lomwe lili ndi silicon ndi kaboni, ndipo limapezeka mwachilengedwe ngati mchere wosowa kwambiri moissanite. Ma silicon carbide particles amatha kulumikizidwa palimodzi popanga sinter kuti apange zoumba zolimba kwambiri, zomwe zimagwiritsidwa ntchito kwambiri pamapulogalamu omwe amafunikira kulimba kwambiri, makamaka mumayendedwe a semiconductor.

Kapangidwe ka thupi la SiC

Kodi SiC Coating ndi chiyani?

Kupaka kwa SiC ndi zokutira wandiweyani, wosamva kuvala wa silicon carbide wokhala ndi dzimbiri komanso kukana kutentha komanso kusinthasintha kwabwino kwamafuta. Kupaka koyera kwambiri kwa SiC kumeneku kumagwiritsidwa ntchito makamaka m'mafakitale a semiconductor ndi zamagetsi kuti ateteze zonyamulira zopyapyala, zoyambira ndi zinthu zotenthetsera kumadera owononga komanso otakasuka. Kupaka kwa SiC ndikoyeneranso ng'anjo za vacuum ndi kutentha kwachitsanzo m'malo opanda vacuum, zotakataka komanso mpweya.

High chiyero SiC ❖ kuyanika pamwamba

Kodi njira yokutira ya SiC ndi yotani?

Gawo lochepa kwambiri la silicon carbide limayikidwa pamwamba pa gawo lapansi pogwiritsa ntchitoCVD (Chemical Vapor Deposition). Kuyika nthawi zambiri kumachitika pa kutentha kwa 1200-1300 ° C ndipo machitidwe owonjezera kutentha kwa gawo lapansi ayenera kugwirizana ndi zokutira za SiC kuti achepetse kupsinjika kwamafuta.

CVD SIC FILM CRYSTAL STRUCTURE

CVD SIC Coating FILM CRYSTAL STRUCTURE

Zowoneka bwino za zokutira za SiC zimawonekera makamaka pakukana kwake kutentha, kuuma, kukana dzimbiri komanso kusinthasintha kwamafuta.

Zodziwika bwino zakuthupi nthawi zambiri zimakhala motere:

Kuuma: Zovala za SiC nthawi zambiri zimakhala ndi Vickers Kuuma kwapakati pa 2000-2500 HV, zomwe zimawapatsa kuvala kwambiri komanso kukana kwamphamvu pamafakitale.

Kuchulukana: Zovala za SiC nthawi zambiri zimakhala ndi makulidwe a 3.1-3.2 g/cm³. Kuchulukana kwakukulu kumathandizira ku mphamvu zamakina komanso kulimba kwa zokutira.

Thermal conductivity: Zovala za SiC zimakhala ndi matenthedwe apamwamba kwambiri, omwe amakhala pamtunda wa 120-200 W / mK (pa 20 ° C). Izi zimapatsa matenthedwe abwino m'malo otentha kwambiri ndipo zimapangitsa kuti zikhale zoyenera kwambiri pazida zochizira kutentha mumakampani a semiconductor.

Malo osungunuka: silicon carbide imakhala ndi malo osungunuka pafupifupi 2730 ° C ndipo imakhala ndi kukhazikika kwabwino kwa kutentha pa kutentha kwambiri.

Coefficient of Thermal Expansion: Zopaka za SiC zimakhala ndi mzere wocheperako wocheperako wa kukula kwamafuta (CTE), nthawi zambiri mumitundu ya 4.0-4.5 µm/mK (mu 25-1000 ℃). Izi zikutanthauza kuti kukhazikika kwake kumakhala kopambana kusiyana ndi kutentha kwakukulu.

Kukana dzimbiri: Zovala za SiC zimagonjetsedwa kwambiri ndi dzimbiri m'malo a asidi amphamvu, alkali ndi oxidizing, makamaka pogwiritsa ntchito ma asidi amphamvu (monga HF kapena HCl), kukana kwawo kwa dzimbiri kumaposa kwambiri zida zachitsulo wamba.

Zovala za SiC zitha kugwiritsidwa ntchito pazinthu zotsatirazi:

High chiyero isostatic graphite (otsika CTE)
Tungsten
Molybdenum
Silicon Carbide
Silicon Nitride
Mpweya wa Carbon-Carbon (CFC)

Zovala zokutira za SiC zimagwiritsidwa ntchito kwambiri m'malo otsatirawa:

Kupanga kwa chip cha LED
Kupanga polysilicon
Semiconductorkukula kwa kristalo
Silicon ndiSiC epitaxy
Wafer kutentha mankhwala ndi etching

Chifukwa chiyani musankhe VET Energy?

VET Energy ndi otsogola opanga, oyambitsa komanso mtsogoleri wa zinthu zokutira za SiC ku China, zida zazikulu zokutira za SiC zikuphatikiza.chonyamulira chopyapyala chokhala ndi zokutira za SiC, SiC yokutidwaepitaxial susceptor, SiC yokutidwa ndi mphete ya graphite, Zigawo za theka la mwezi zokhala ndi zokutira za SiC, SiC yokutidwa ndi carbon-carbon composite, SiC yokutidwa ndi bwato lophika, SiC yokutidwa ndi heater, etc. VET Energy yadzipereka kupatsa makampani opanga ma semiconductor ukadaulo womaliza ndi mayankho azinthu, ndikuthandizira ntchito zosintha mwamakonda. Tikuyembekezera moona mtima kukhala bwenzi lanu kwa nthawi yayitali ku China.