99% Alumina Anti-Ballistic Ceramics: Zvivakwa, Kugadzira, uye Mashandisirwo

Iyo99% alumina inorwisa bhora resimbiiceramic yeinjiniya inoshanda zvakanyanya ine α-alumina (α-Al2O₃) sechikamu chikuru chekristalline uye huwandu hwealumina hunodarika 98%. Inoshanda munzvimbo yakakosha mukudzivirira nhumbi dzemuviri nedzemotokari nekuda kwekuoma kwayo kwakanyanya, huwandu huri pakati nepakati, kuramba kupfeka kwakanaka, uye chiyero chakanaka chemutengo-kushanda. Maitiro ayo ekudzivirira anonyanya kuvimba nekuoma kwayo kwakanyanya uye modulus kuti iite kujeka uye kupatsanura projectile inouya, uku ichitora uye ichiparadzira simba guru re projectile kuburikidza nemaitiro ayo ekupwanyika. Simba rasara rinozotorwa nezvinhu zvinotsigira (semuenzaniso, polyethylene inorema zvakanyanya kana jira risingatungamirirwe). Hunhu hwakakosha hwemuviri hunosanganisira kuwanda kwehuwandu husingasviki 3.9 g/cm³, kuomarara kweMohs kwe9, simba reflexural rinosvika 580 MPa, pamwe nekunyorova kwemvura kushoma (<0.006%) uye kugadzikana kwakanaka kwekupisa.

Maitiro ekugadzira anotanga nekusarudza upfu hwealumina hwakachena zvakanyanya, hwakapfava zvakanyanya, hunowanzova nehukuru hwe submicron particles (D50 inenge 0.35 ~ 1.4 μm). Nzira dzekutanga dzekugadzira dzinosanganisira dry pressing uye isostatic pressing, zvichiteverwa ne densification kuburikidza ne atmospheric sintering kana hot pressing. Kuti vakunde brittleness ye ceramic uye vawedzere multi-hit resistance, tsvakiridzo yepamusoro inotarisa pa tekinoroji dze toughening, dzakadai sekuisa silicon carbide whiskers kana zirconia kugadzira alumina matrix composite ceramics. Izvi zvinhu zvinosanganiswa zvinogona kudzivirira kupararira kwema crack pa microstructural level, zvichiwedzera zvakanyanya kuomarara, impact resistance, uye ballistic performance yese.

Mukushandiswa kwazvinoitwa, 99% alumina ceramics inowanzogadzirwa kuita mataira akaumbwa semazuva ose (masikweya, ma rectangles, ma hexagon) kana zvidimbu zvakakombama zvine chimiro chakakosha kuti zviunganidze maplate e ergonomic ballistic insert. Maplate ezvombo zvakasimba akagadzirwa nezvinhu izvi akapfuura bvunzo dzehunyanzvi dzakadai seNIJ Standard-0101.06 Level III na IV. Zvidzidzo zvekuedza zvakaratidza kuti kuwedzera kuvharirwa kumaplate e ceramic kunogona kuvandudza kuramba kwawo kupinda. Nekuda kwekushanda kwayo kwakanaka kwekudzivirira mabara, huremu hwakaderera uye mutengo unokwikwidzana, 99% alumina bulletproof ceramic ndiyo yave chinhu chinonyanya kukosha mumusika weplate dze ceramic bulletproof.