I-Alumina, okanye i-Aluminium Oxide, ingaveliswa ngobuninzi obucocekileyo. Amanqanaba aqhelekileyo asetyenziswa kwizicelo zanamhlanje zoshishino yi-99.5% ukuya kwi-99.9% kunye nezongezo ezenzelwe ukuphucula iipropati. Iindlela ezahlukeneyo zokucubungula i-ceramic zingasetyenziswa kubandakanya umatshini wokugaya okanye ukwenza imilo ye-net ukuvelisa iintlobo ngeentlobo zobukhulu kunye nemilo yecandelo.
Iiseramikhi ze-Al2O3 zinezibonelelo ezilandelayo:
1. Ubunzima obuphezulu (ubulukhuni be-MOHS yi-9) kunye nokumelana nokuguguleka okuhle.
2. Amandla alungileyo oomatshini. Amandla ayo okugoba angafikelela kwi-300~500MPa.
3. Ukumelana nobushushu okugqwesileyo. Ubushushu bayo obuqhubekayo bunokufikelela kwi-1000℃.
4. Ukumelana okuphezulu kunye neempawu ezilungileyo zokuthintela umbane. Ingakumbi ngokuthintela ubushushu obuphezulu (Ukumelana nobushushu begumbi yi-1015Ω•cm) kunye nokumelana nokuqhekeka kwevolthi (amandla okuthintela umbane yi-15kV/mm).
5. Uzinzo oluhle lweekhemikhali. Ayisebenzi ne-sulfuric acid, i-hydrochloric acid, i-nitric acid kunye ne-hydrofluoric acid.
6. Ukumelana nokugqwala kubushushu obuphezulu. Ingamelana ngcono nokukhukuliseka kweentsimbi ezinyibilikisiweyo ezifana neBe, Sr, Ni, Al, V, Ta, Mn, Fe kunye neCo.
Ke ngoko, ii-alumina ceramics zisetyenziswa kakhulu kwiinkalo zoshishino zanamhlanje. Zisetyenziswa kakhulu kwishishini lokuvelisa ii-semiconductor, kwishishini le-elektroniki, kwishishini loomatshini, kwindawo enobushushu obuphezulu, kwishishini leekhemikhali, kwishishini lokukhanya, kwishishini lempahla kunye nezinye iinkalo.
I-Alumina yinto yodongwe esetyenziswa kakhulu kwezi zicelo zilandelayo:
✔ izithinteli zombane, izinto ezithintela ukugqwala kwiilaser zegesi, zezixhobo zokucubungula i-semiconductor (ezifana ne-chuck, i-end effector, i-seal ring)
✔ izithinteli zombane zeetyhubhu ze-electron.
✔ iindawo zesakhiwo sezixhobo ezine-vacuum ephezulu kunye ne-cryogenic, izixhobo ze-nyukliya, izixhobo ezisetyenziswa kubushushu obuphezulu.
✔ izinto ezithintela ukugqwala, i-piston yeempompo, iivalvu kunye neenkqubo zokulinganisa, iivalvu zegazi ezithathwa njengesampuli.
✔ iityhubhu ze-thermocouple, izithinteli zombane, izixhobo zokugaya, izikhokelo zemisonto.
Ixesha lokuthumela: Julayi-14-2023