Sapphire Substrate
Kufotokozera
Sapphire (Al2O3) single crystal ndi yabwino multifunctional zakuthupi.Imakhala ndi kukana kutentha kwambiri, kuwongolera kutentha kwabwino, kuuma kwambiri, kufalikira kwa infuraredi komanso kukhazikika kwamankhwala abwino.Amagwiritsidwa ntchito kwambiri m'mafakitale ambiri, chitetezo cha dziko komanso kafukufuku wasayansi (monga zenera la kutentha kwa infrared).Nthawi yomweyo, ndi mtundu wazinthu zomwe zimagwiritsidwa ntchito kwambiri pagawo limodzi la kristalo.Ndilo gawo loyamba losankha pamsika wamakono wa buluu, violet, white light-emitting diode (LED) ndi blue laser (LD) (filimu ya gallium nitride iyenera kukhala epitaxial pa safiro gawo lapansi), komanso ndi yofunika kwambiri superconducting. gawo lapansi la filimu.Kuphatikiza pa Y-system, La system ndi mafilimu ena otenthetsera kwambiri, itha kugwiritsidwanso ntchito kukulitsa makanema atsopano a MgB2 (magnesium diboride) superconducting (kawirikawiri gawo laling'ono la kristalo lidzakhala lowonongeka ndi mankhwala panthawi yopanga MgB2. mafilimu).
Katundu
| Crystal Purity | 99.99% |
| Melt Point (℃) | 2040 |
| Kachulukidwe (g/cm3） | 3.98 |
| Kuuma (Mho) | 9 |
| Kuwonjezedwa kwa Matenthedwe | 7.5 (x10-6/oC) |
| Kutentha Kwapadera | 0.10 (cal /oC) |
| Thermal Conductivity | 46.06 pa 0oC 25.12 @ 100oC, 12.56 @ 400oC (W/(mK)) |
| Dielectric Constant | ~ 9.4 @300K pa Axis ~ 11.58@ 300K pa C axis |
| Kutaya Tangent pa 10 GHz | <2x10-5pa Axis, <5 x10-5ku C axis |
Tanthauzo la Sapphire Substrate
Sapphire gawo lapansi limatanthawuza chinthu chowoneka bwino cha crystalline chopangidwa ndi single crystal aluminium oxide (Al2O3).Mawu akuti "safiro" nthawi zambiri amagwiritsidwa ntchito pofotokoza mitundu ya miyala yamtengo wapatali ya corundum, yomwe nthawi zambiri imakhala yabuluu.Komabe, ponena za ma substrates, safiro imatanthawuza kristalo wopangidwa mwaluso, wopanda mtundu, woyeretsedwa kwambiri womwe umagwiritsidwa ntchito mosiyanasiyana.Nazi mfundo zazikuluzikulu za gawo la safiro:
1. Kapangidwe ka kristalo: safiro ili ndi mawonekedwe a kristalo wa hexagonal momwe maatomu a aluminiyamu ndi maatomu a okosijeni amakonzedwa mobwerezabwereza.Ndi ya trigonal crystal system.
2. Kuuma kwakukulu: Sapphire ndi imodzi mwazinthu zolimba kwambiri zomwe zimadziwika, ndi kuuma kwa Mohs kwa 9. Izi zimapangitsa kuti zikhale zovuta kwambiri komanso zowonongeka, zomwe zimathandiza kuti zikhale zolimba komanso zautali pakugwiritsa ntchito.
3. Kutumiza kwa kuwala: Sapphire imakhala ndi kuwala kwabwino kwambiri, makamaka m'madera owoneka ndi pafupi ndi infrared.Imatha kufalitsa kuwala kuchokera pafupifupi 180 nm mpaka 5500 nm, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito mawonekedwe osiyanasiyana ndi optoelectronic.
4. Thermal ndi makina katundu: safiro ali ndi mphamvu matenthedwe ndi makina katundu, mkulu kusungunuka, kutsika kwapang'onopang'ono kukulitsa coefficient, ndi bwino matenthedwe conductivity.Imatha kupirira kutentha kwambiri, kupsinjika kwamakina ndi njinga zamatenthedwe, ndikupangitsa kuti ikhale yoyenera kutentha kwambiri komanso kugwiritsa ntchito mphamvu zambiri.
5. Kukhazikika kwa mankhwala: safiro imakhala ndi kukhazikika kwa mankhwala ndipo imatha kukana ma acid ambiri, alkalis ndi organic solvents.Izi zimatsimikizira kulimba kwake komanso kudalirika m'malo osiyanasiyana ovuta.
6. Zopangira zamagetsi zamagetsi: Sapphire ndi insulator yabwino kwambiri yamagetsi, yomwe imapindulitsa pazinthu zomwe zimafuna kudzipatula kwamagetsi kapena kusungunula.
7. Ntchito: Magawo a safiro amagwiritsidwa ntchito kwambiri mu optoelectronics, semiconductors, ma diode otulutsa kuwala, ma laser diode, mazenera owoneka bwino, makhiristo owonera ndi kafukufuku wasayansi.
Magawo a safiro amayamikiridwa kwambiri chifukwa cha kuphatikiza kwawo kwa kuwala, makina, matenthedwe ndi mankhwala.Zida zake zodziwika bwino zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito zovuta zomwe zimafuna kukhazikika kwambiri, kumveka bwino kwa kuwala, kutsekemera kwamagetsi komanso kukana zinthu zachilengedwe.
