I-Alumina, noma i-Aluminium Oxide, ingakhiqizwa ngobumsulwa obuhlukahlukene. Amazinga ajwayelekile asetshenziselwa ukusetshenziswa kwezimboni zanamuhla angama-99.5% kuya ku-99.9% anezithasiselo ezenzelwe ukuthuthukisa izakhiwo. Izindlela eziningi zokucubungula i-ceramic zingasetshenziswa kufaka phakathi ukugaya noma ukwakha isimo se-net ukukhiqiza ubukhulu obuhlukahlukene kanye nezimo zengxenye.
Izitsha zobumba ze-Al2O3 zinezinzuzo ezilandelayo:
1. Ubulukhuni obuphezulu (ubulukhuni be-MOHS buyi-9) kanye nokumelana okuhle nokuguguleka.
2. Amandla amahle omshini. Amandla ayo okugoba angafika ku-300~500MPa.
3. Ukumelana nokushisa okuhle kakhulu. Izinga lokushisa layo lokusebenza eliqhubekayo lingafika ku-1000℃.
4. Ukumelana okuphezulu kanye nezakhiwo ezinhle zokuvimbela ugesi. Ikakhulukazi ngokuvimbela ukushisa okuphezulu okuhle kakhulu (Ukumelana nokushisa kwegumbi kungu-1015Ω•cm) kanye nokumelana nokuqhekeka kwe-voltage (amandla okuvimbela ugesi angu-15kV/mm).
5. Ukuqina okuhle kwamakhemikhali. Ayisebenzi ne-sulfuric acid, i-hydrochloric acid, i-nitric acid kanye ne-hydrofluoric acid.
6. Ukumelana nokugqwala kwezinga lokushisa eliphezulu. Kungamelana kangcono nokuguguleka kwezinsimbi ezincibilikisiwe njenge-Be, Sr, Ni, Al, V, Ta, Mn, Fe kanye ne-Co.
Ngakho-ke, izitsha zobumba ze-alumina zisetshenziswa kabanzi emikhakheni yezimboni yesimanje. Zisetshenziswa kakhulu embonini yokukhiqiza ye-semiconductor, embonini ye-elekthronikhi, embonini yemishini, endaweni eshisayo ephezulu, embonini yamakhemikhali, embonini yokukhanya, ezindwangu nakwezinye izindawo.
I-Alumina iyinto yobumba esetshenziswa kabanzi kulezi zicelo ezilandelayo:
✔ izivikelo zikagesi, izingxenye zokumelana nokugqwala zama-laser egesi, zemishini yokucubungula ye-semiconductor (njenge-chuck, i-end effector, i-seal ring)
✔ izivikelo zikagesi zamashubhu e-electron.
✔ izingxenye zesakhiwo semishini ene-vacuum ephezulu kanye ne-cryogenic, amadivayisi emisebe yenuzi, imishini esetshenziswa ekushiseni okuphezulu.
✔ izingxenye zokumelana nokugqwala, i-piston yamaphampu, ama-valve kanye nezinhlelo zokulinganisa, ama-valve egazi okuthatha isampula.
✔ amashubhu e-thermocouple, ama-insulators kagesi, imidiya yokugaya, iziqondiso zemicu.
Isikhathi sokuthunyelwe: Julayi-14-2023