Alumina, kana kuti Aluminium Oxide, inogona kugadzirwa mumhando dzakasiyana-siyana dzekuchena. Magiredhi akajairika anoshandiswa mumaindasitiri emazuva ano nde99.5% kusvika 99.9% ane zvimwe zvinhu zvakagadzirirwa kusimudzira hunhu. Nzira dzakasiyana-siyana dzekugadzira ceramic dzinogona kushandiswa kusanganisira kugadzira kana kugadzira chimiro chesimbi kuti pave nehukuru hwakasiyana-siyana uye maumbirwo echinhu.
Zvesimbi zveAl2O3 zvine zvakanakira zvinotevera:
1. Kuomarara kwakanyanya (kuomarara kweMOHS 9) uye kuramba kupfeka zvakanaka.
2. Simba rakanaka remuchina. Simba rayo rekukombama rinogona kusvika 300~500MPa.
3. Inodzivirira kupisa zvakanyanya. Tembiricha yayo inoshanda nguva dzose inogona kusvika 1000℃.
4. Kudzivirira kwakanyanya uye hunhu hwakanaka hwekudzivirira magetsi. Kunyanya nekudzivirira kwakanyanya kupisa kwakanyanya (Kudzivirira kupisa kwemukamuri i1015Ω•cm) uye kudzivirira kukanganiswa kwemagetsi (simba rekudzivirira kupisa i15kV/mm).
5. Kugadzikana kwakanaka kwemakemikari. Haisangani nesulfuric acid, hydrochloric acid, nitric acid uye hydrofluoric acid.
6. Kudzivirira ngura pakupisa kwakanyanya. Inogona kudzivirira zviri nani kuparadzwa kwesimbi dzakanyungudutswa dzakadai seBe, Sr, Ni, Al, V, Ta, Mn, Fe neCo.
Saka, alumina ceramics inoshandiswa zvakanyanya muindasitiri yemazuva ano. Inonyanya kushandiswa muindasitiri yekugadzira semiconductor, indasitiri yemagetsi, indasitiri yemichina, nharaunda inodziya zvakanyanya, indasitiri yemakemikari, indasitiri yechiedza, indasitiri yemachira nedzimwe nzvimbo.
Alumina chinhu checeramic chinoshandiswa zvakanyanya muzvishandiso zvinotevera:
✔ zvinodzivirira magetsi, zvikamu zvinodzivirira ngura zvema laser egasi, zvemidziyo yekugadzirisa semiconductor (yakadai sechuck, end effector, seal ring)
✔ zvinodzivirira magetsi zvemachubhu emagetsi.
✔ zvikamu zvemidziyo ine vacuum yakawanda uye cryogenic, michina yemwaranzi yenyukireya, michina inoshandiswa pakupisa kwakanyanya.
✔ zvikamu zvinodzivirira ngura, pisitoni yepombi, mavharuvhu uye masisitimu ekuyera, kutora mavharuvhu eropa.
✔ machubhu ethermocouple, zvinodzivirira magetsi, zvinokwesha, tambo dzinotungamirira.
Nguva yekutumira: Chikunguru-14-2023