Ibice bya Alumina Ceramic ni iki?

Ibyuma bya alumina ceramicni ibikoresho bya keramike bikora neza cyane bigizwe ahanini na okiside ya aluminiyumu. Ubusanzwe bikorwa binyuze mu buryo bwo gutwika ubushyuhe bwinshi. Bitewe n'ingano ya alumina, bishyirwa mu byiciro by'ubuziranenge buke (75%-85% Al₂O₃), ubuziranenge buringaniye (96% Al₂O₃), n'ubuziranenge bwinshi (≥99% Al₂O₃). Birangwa n'imiterere mito y'ibinyabutabire n'imiterere ihamye ya shimi, ibi bice bigaragaza imbaraga zidasanzwe za mekanike, ubushyuhe bwinshi budashobora kwiyongera, no gukingira amashanyarazi. Bikoreshwa cyane nk'ibikoresho by'ibanze mu bikoresho by'ikoranabuhanga, amashanyarazi, indege, n'izindi nganda ziteye imbere.

Ibyiza by'uduce duto twa Alumina Ceramic:

Ubwishingizi bw'amashanyarazi budasanzwe
Bitewe n’ubushobozi bwo guhagarara cyane (>10¹⁴ Ω·cm) n’ubushobozi buke bwo guhagarara neza (8-10), alumina ceramics zitandukanya neza imiyoboro y’amashanyarazi, zikarinda ko uruziga ruhagarara mu duce dufite frequency nyinshi cyangwa amashanyarazi menshi.

Ubushobozi bwo gutwara ubushyuhe bwinshi
Uduce duto dufite alumina ya 96% dutanga ubushyuhe bwa 24-28 W/(m·K), bigatuma ubushyuhe bukwirakwira neza mu bice by'ikoranabuhanga kugira ngo hirindwe ubushyuhe bukabije kandi byongere igihe cyo kubaho cy'igikoresho.

Imbaraga z'ubukanishi zihebuje
Ingufu zo kugonda za 300-400 MPa, hamwe n'ubukana bwinshi (ubukana bwa Mohs 9) no kudashira, bituma iramba mu bihe bigoye gukora.

Gukomera mu bya shimi
Birwanya aside, alkali, oxidation, n'ubushuhe, substrates za alumina zigumana imikorere ihamye ndetse no mu bushyuhe bwinshi (kugeza kuri 1600°C) cyangwa ahantu hangirika.

Gukora mu buryo bunoze
Gutunganya neza bituma ubuso bugenda neza ku rwego rwa mikoroni, byuzuza ibisabwa bikomeye ku buryo bworoshye bwo gukoresha nko gupakira ibikoresho bya semiconductor.