Alumina, cyangwa Oxide ya Aluminium, irashobora kubyazwa umusaruro muburyo butandukanye.Amanota asanzwe akoreshwa mubikorwa bigezweho byinganda ni 99.5% kugeza 99.9% hamwe ninyongera zagenewe kuzamura imitungo.Ubwoko butandukanye bwuburyo bwo gutunganya ceramic burashobora gukoreshwa harimo gutunganya cyangwa gushushanya inshundura kugirango bitange ubunini butandukanye nubunini bwibigize.
Ubukorikori bwa Al2O3 bufite ibyiza bikurikira:
1. Gukomera cyane (MOHS gukomera ni 9) no kurwanya kwambara neza.
2. Imbaraga nziza zubukanishi.Nukunama imbaraga zishobora kugera kuri 300 ~ 500MPa.
3. Kurwanya ubushyuhe buhebuje.Nubushyuhe bukomeza gukora bushobora kugera kuri 1000 ℃.
4. Kurwanya cyane hamwe nuburyo bwiza bwo gukwirakwiza amashanyarazi.Cyane cyane hamwe nubushyuhe bwo hejuru cyane (Kurwanya Icyumba-Ubushyuhe ni 1015Ω • cm) hamwe no kurwanya voltage kumeneka (imbaraga zo gukumira ni 15kV / mm).
5. Imiti ihamye.Ntabwo ikora na acide sulfurike, aside hydrochloric, aside nitric na aside hydrofluoric.
6. Kurwanya ubushyuhe bwinshi.Irashobora kurwanya neza isuri yicyuma gishongeshejwe nka Be, Sr, Ni, Al, V, Ta, Mn, Fe na Co
Kubwibyo, alumina ceramics ikoreshwa cyane mubikorwa byinganda bigezweho.Ahanini ikoreshwa mu nganda zikora igice cya kabiri, inganda za elegitoroniki, inganda z’imashini, ibidukikije by’ubushyuhe bwo hejuru, inganda z’imiti, inganda zoroheje, imyenda n’izindi nzego.
Alumina ni ibikoresho bya ceramic bikoreshwa cyane mubikorwa bikurikira:
Ins insulator zikoresha amashanyarazi, ibikoresho birwanya ruswa ya lazeri, kubikoresho bitunganya igice cya kabiri (nka chuck, effekt ya nyuma, impeta ya kashe)
Ins insulator zamashanyarazi kumiyoboro ya electron.
Parts ibice byubatswe kubikoresho byinshi-vacuum na cryogenic, ibikoresho bya radiyoyasi ya kirimbuzi, ibikoresho bikoreshwa mubushyuhe bwinshi.
Components ibice birwanya ruswa, piston ya pompe, valve na sisitemu yo gukuramo, icyitegererezo cyamaraso.
Tub Imiyoboro ya thermocouple, insulator zikoresha amashanyarazi, gusya itangazamakuru, kuyobora umurongo.
Igihe cyoherejwe: Nyakanga-14-2023