99% Alumina Anti-Ballistic Ceramics: Imiterere, Inganda, n'Imikoreshereze

Itsinda99% alumina irwanya umupira w'ibumbani ceramic ifite imikorere myiza cyane ifite α-alumina (α-Al2O₃) nk'igice cy'ibanze cya crystalline kandi ifite alumina irenga 98%. Ifite umwanya ukomeye mu kurinda intwaro z'umuntu ku giti cye n'iz'imodoka bitewe n'ubukana bwayo bwinshi, ubucucike buri hagati, kudapfa kwangirika neza, hamwe n'igipimo cyiza cy'ikiguzi n'imikorere. Uburyo bwayo bwo kuyirinda bushingiye ahanini ku bucucike bwayo bwinshi n'uburyo bwo kuyigabanya kugira ngo ihinduke kandi igabanyemo ibice by'imashini yinjira, mu gihe ifata kandi igakwirakwiza ingufu nyinshi z'imashini binyuze mu nzira yayo yo kuvunika. Ingufu zisigaye zinyurwa n'ibikoresho bifatanye (urugero: polyethylene ifite uburemere bwinshi bwa molekile cyangwa umwenda ugororotse). Imiterere y'ingenzi y'umubiri irimo ubucucike butari munsi ya 3.9 g/cm³, ubukana bwa Mohs bwa 9, imbaraga zo kuzunguruka kugeza kuri 580 MPa, hamwe no kugabanya amazi (<0.006%) no kudahinduka neza mu bushyuhe.

Uburyo bwo gukora butangirana no guhitamo ifu ya alumina nziza cyane, isanzwe ifite ingano ntoya cyane (D50 hafi 0.35 ~ 1.4 μm). Uburyo bw'ibanze bwo gukora burimo gusunika byumye no gusunika isostatic, hagakurikiraho gukurura ibintu binyuze mu gusya mu kirere cyangwa gushyuha. Kugira ngo harengerwe ububobere bw'ibumba no kunoza ubudahangarwa bw'ibitero byinshi, ubushakashatsi bwibanze ku ikoranabuhanga ryo gukomeretsa, nko gushyiraho ubwanwa bwa silicon carbide cyangwa zirconia kugira ngo hakorwe ibumba rya alumina matrix. Ibi bikoresho bivanze bishobora kubangamira ikwirakwira ry'ibice ku rwego rw'imiterere, byongera cyane ubukomere, ubudahangarwa bw'ingaruka, n'imikorere rusange ya ballistic.

Mu bikorwa bifatika, 99% by'ibibumbano bya alumina bikunze gukorwa mu matiles afite ishusho isanzwe (kare, urukiramende, hexagons) cyangwa ibice byihariye bifite ishusho igoramye kugira ngo biteranye amabati akoreshwa mu gupima neza. Amabati akomeye akozwe muri ibi bikoresho yatsinze ibizamini by'umwuga bya ballistic nka NIJ Standard-0101.06 Level III na IV. Ubushakashatsi bwagaragaje ko kongeramo amabati akoreshwa mu gufunga amabati bishobora kongera ubushobozi bwo kuyarinda kwinjira. Bitewe n'imikorere yayo idasanzwe yo kwirinda amasasu, uburemere bwayo buke kandi ihendutse, 99% by'ibibumbano bya alumina byahindutse ibikoresho byiganje ku isoko ry'amabati akoreshwa mu gufunga amasasu.