Niki Umwirabura Alumina Ceramic

Nkuko tubyumva, ceramics zirconia na alumina ceramics byombi byera, mugihe silicon nitride ceramics yirabura.Wigeze ubona alumina yumukara (AL2O3) ceramics?

Ceramics yumukara wa alumina yitabiriwe cyane kubera imiterere yihariye, Semiconductor ihuza umuzenguruko usanzwe ikenera urumuri rwiza, irashobora kugabanya ingaruka mbi zumucyo kumuzunguruko.Umukara rero nibyiza guhitamo.

Aluminium (AL2O3) mubisanzwe ni ibara ritagira ibara cyangwa ryera, ariko mubihe bimwe na bimwe rishobora guhinduka umukara.Ibikurikira nuburyo burambuye bwa oxyde ya aluminiyumu ikora umukara: Guhumanya hejuru: Hariho imyanda ihumanya hejuru ya alumina, nkibintu kama birimo karubone, hydrogène, ogisijeni nibindi bintu, cyangwa umwanda urimo ibyuma byinzibacyuho.Iyi myanda irashobora gukora nka catalizator, bigatuma alumina ikora.Oxidation-kugabanya reaction: Mugihe cyubushyuhe nikirere runaka, ibyuka bihumanya hejuru ya alumina bizahura na okiside-igabanya okisijeni.Izi reaction zirashobora gutera impinduka mumabara ya alumina.Imiterere yo kugabanya agace: Ku buso bwa alumina, kubera ko habaho reaction ya redox, hazashyirwaho agace ko kugabanya.Aka karere kagabanutse gafite imiti itandukanye, harimo impinduka muri stoichiometry no gushiraho inenge za lattice.Ishirwaho ryibara ryamabara: Mu karere kagabanya, hari ibibanza bya ogisijeni bifite inenge bishobora kwakira electron ziyongera.Izi electroni zinyongera zihindura imiterere ya band ya alumina, ihindura uburyo ikurura kandi ikagaragaza urumuri.Ibi bitera ibara rya alumina guhinduka umukara.Muri rusange, inzira yumukara wa alumina iterwa ahanini nigikorwa cyo kugabanya okiside-kugabanya itangizwa n’imyanda ihumanya hejuru ya alumina, ikora agace kagabanutse kandi ikazana andi mashanyarazi, amaherezo bigatuma alumina ihinduka umukara.Alumina yumukara irashobora gukoreshwa nkibikoresho byibikoresho nka fotodiode, imashini ifotora, ifotora, hamwe nabafotora.Ikinyuranyo cyinshi cyingufu hamwe nibintu byiza bya optoelectronic bituma bifasha kugira uruhare runini mubijyanye na optoelectronics.