A na-emepụta alumina, ma ọ bụ Aluminom Oxide, n'ọtụtụ ịdị ọcha. Akara ndị a na-ejikarị eme ihe n'ụlọ ọrụ mmepụta ihe nke oge a bụ 99.5% ruo 99.9% yana ihe mgbakwunye emere iji melite njirimara. Enwere ike itinye ọtụtụ ụzọ nhazi seramiiki gụnyere igwe ma ọ bụ nhazi ọdịdị net iji mepụta ọtụtụ nha na ọdịdị nke ihe mejupụtara ya.
Seramiki Al2O3 nwere uru ndị a:
1. Ike siri ike (ike siri ike nke MOHS bụ 9) na ezigbo ike iguzogide iyi.
2. Ike igwe dị mma. Ike ya na-agbagọ agbagọ nwere ike iru 300 ~ 500MPa.
3. Ọ na-eguzogide okpomọkụ nke ọma. Okpomọkụ ya na-arụ ọrụ mgbe niile nwere ike iru 1000℃.
4. Nnukwu iguzogide ọrịa na ezigbo ihe mkpuchi ọkụ eletrik. Karịsịa na mkpuchi okpomọkụ dị elu (Nguzogide okpomọkụ ụlọ bụ 1015Ω•cm) na iguzogide mmebi voltaji (ike mkpuchi bụ 15kV/mm).
5. Ọ na-eme ka kemịkalụ sie ike nke ọma. Ọ naghị emeghachi omume na sulfuric acid, hydrochloric acid, nitric acid na hydrofluoric acid.
6. Ọ na-eguzogide oke okpomọkụ nke nchara. Ọ ka mma iguzogide mbuze nke ọla ndị a gbazere agbaze dịka Be, Sr, Ni, Al, V, Ta, Mn, Fe na Co.
Ya mere, a na-ejikarị seramiiki alumina eme ihe n'ọtụtụ ebe n'ụlọ ọrụ mmepụta ihe nke oge a. A na-ejikarị ya eme ihe n'ụlọ ọrụ mmepụta semiconductor, ụlọ ọrụ eletrọnịkị, ụlọ ọrụ igwe, gburugburu ebe okpomọkụ dị elu, ụlọ ọrụ kemịkalụ, ụlọ ọrụ ọkụ, ákwà na ngalaba ndị ọzọ.
Alumina bụ ihe seramiiki a na-ejikarị eme ihe n'ọtụtụ ebe:
✔ ihe mkpuchi eletriki, ihe ndị na-eguzogide nchara maka laser gas, maka akụrụngwa nhazi semiconductor (dịka chuck, end effector, mgbanaka mkpuchi)
✔ ihe mkpuchi eletriki maka ọkpọkọ elektrọn.
✔ akụkụ nhazi maka akụrụngwa vacuum dị elu na cryogenic, ngwaọrụ radieshon nuklia, akụrụngwa eji eme ihe n'okpomọkụ dị elu.
✔ ihe ndị na-eguzogide nchara, piston maka mgbapụta, valvụ na sistemụ dose, na nlele valvụ ọbara.
✔ ọkpọkọ thermocouple, ihe mkpuchi eletriki, ihe eji egweri ihe, ntuziaka eriri.
Oge ozi: Julaị-14-2023