Iiceramics ze-Alumina ezichasene ne-Ballistic ezingama-99%: iiPropati, uMveliso, kunye noSetyenziso

II-99% ye-alumina anti-ballistic ceramicyiceramic yobunjineli esebenza kakhulu ene-α-alumina (α-Al2O₃) njengesigaba esiphambili sekristale kunye nomxholo we-alumina odlula i-98%. Ihlala kwindawo ebalulekileyo ekukhuseleni izixhobo zobuqu nezemoto ngenxa yobunzima bayo obuphezulu, uxinano oluphakathi, ukumelana nokuguguleka okugqwesileyo, kunye nomlinganiselo ofanelekileyo weendleko zokusebenza. Indlela yayo yokukhusela ixhomekeke kakhulu kubulukhuni bayo obuphezulu kunye nemodulus ukuze ibuthuntu kwaye iqhekeze i-projectile engenayo, ngelixa ifunxa kwaye isasaza uninzi lwamandla e-kinetic e-projectile ngenkqubo yayo yokuqhekeka. Amandla aseleyo emva koko afunxwa zizinto ezidityanisiweyo ezixhasayo (umz., i-polyethylene enobunzima obuphezulu kakhulu okanye ilaphu eli-unidirectional). Iimpawu eziphambili zomzimba ziquka uxinano olukhulu olungaphantsi kwe-3.9 g/cm³, ubulukhuni be-Mohs obuyi-9, amandla e-flexural afikelela kwi-580 MPa, kunye nokufunxwa kwamanzi aphantsi (<0.006%) kunye nokuzinza okuhle kobushushu.

Inkqubo yokuvelisa iqala ngokukhetha iipowder ze-alumina ezicocekileyo kakhulu, ezihlala zine-submicron particle sizes (D50 malunga ne-0.35 ~ 1.4 μm). Iindlela zokuqala zokwenza ziquka ukucinezela okomileyo kunye nokucinezela kwe-isostatic, kulandele ukuxinana ngokusebenzisa i-atmospheric sintering okanye ukucinezela okushushu. Ukuze koyiswe uburhabaxa obungaphakathi be-ceramic kunye nokuphucula ukumelana nokubetheka okuninzi, uphando oluphambili lugxile kubuchwepheshe bokuqinisa, njengokungenisa i-silicon carbide whiskers okanye i-zirconia ukwenza i-alumina matrix composite ceramics. Ezi zinto zidibeneyo zinokuthintela ngempumelelo ukusasazeka kwee-crack kwinqanaba le-microstructural, ziphucula kakhulu ukuqina, ukumelana nempembelelo, kunye nokusebenza ngokubanzi kwe-ballistic.

Kwimisebenzi ebonakalayo, ii-99% ze-alumina ceramics zihlala zenziwe ngeethayile ezimile okwesiqhelo (izikwere, iingxande, iihexagons) okanye iziqwenga ezigobileyo ezimile okwekhethekileyo ukuze kuhlanganiswe iipleyiti ze-ballistic insert ze-ergonomic. Iipleyiti zezixhobo eziqinileyo ezenziwe ngale nto ziphumelele uvavanyo lobuchwephesha lwe-ballistic olufana ne-NIJ Standard-0101.06 Level III kunye ne-IV. Izifundo zovavanyo zibonise ukuba ukongeza ukuvalelwa kwiipleyiti ze-ceramic kunokuphucula ngempumelelo ukumelana kwazo nokungena. Ngenxa yokusebenza kwayo okugqwesileyo kwe-bulletproof, ubunzima obuphantsi kunye neendleko zokukhuphisana, i-99% ye-alumina bulletproof ceramic iye yaba yinto ebalaseleyo kwimarike yeepleyiti ze-ceramic bulletproof.