Lub99% alumina tiv thaiv ballistic ceramicyog ib qho khoom siv ua vaj tse ua los ntawm cov khoom siv ua vaj tse uas muaj α-alumina (α-Al2O₃) ua lub hauv paus tseem ceeb ntawm cov khoom siv crystalline thiab muaj cov alumina ntau tshaj 98%. Nws yog ib qho tseem ceeb hauv kev tiv thaiv tus kheej thiab tsheb vim nws qhov nyuaj siab, qhov ceev nruab nrab, kev tiv thaiv kev hnav zoo heev, thiab qhov sib piv ntawm tus nqi-kev ua tau zoo. Nws cov txheej txheem tiv thaiv feem ntau yog nyob ntawm nws qhov nyuaj siab thiab modulus los ua kom tawg thiab tawg cov khoom siv uas nkag los, thaum nqus thiab faib feem ntau ntawm lub zog kinetic ntawm cov khoom siv los ntawm nws tus kheej cov txheej txheem tawg. Lub zog seem tom qab ntawd raug nqus los ntawm cov khoom siv sib xyaw ua ke (piv txwv li, polyethylene ultra-high-molecular-weight lossis unidirectional fabric). Cov khoom tseem ceeb ntawm lub cev suav nrog qhov ceev ntawm tsis tsawg dua 3.9 g / cm³, Mohs hardness ntawm 9, lub zog flexural txog li 580 MPa, ua ke nrog kev nqus dej tsawg (<0.006%) thiab kev ruaj khov thermal zoo.
Cov txheej txheem tsim khoom pib nrog kev xaiv cov hmoov alumina uas muaj cov khoom huv si, feem ntau nrog cov khoom me me hauv qab micron (D50 nyob ib puag ncig 0.35 ~ 1.4 μm). Cov txheej txheem tsim khoom tseem ceeb suav nrog kev nias qhuav thiab kev nias isostatic, ua raws li kev sib xyaw los ntawm kev sib xyaw ua ke hauv huab cua lossis kev nias kub. Txhawm rau kov yeej qhov brittleness ntawm cov ceramic thiab txhim kho kev tiv thaiv ntau qhov kev sib tsoo, kev tshawb fawb ua ntej tsom mus rau cov thev naus laus zis toughening, xws li kev qhia txog silicon carbide whiskers lossis zirconia los tsim alumina matrix composite ceramics. Cov ntaub ntawv sib xyaw no tuaj yeem cuam tshuam kev tawg ntawm qib microstructural, ua rau muaj kev txhim kho kev tawv, kev tiv thaiv kev cuam tshuam, thiab kev ua tau zoo tag nrho.
Hauv kev siv tiag tiag, 99% alumina ceramics feem ntau yog tsim rau hauv cov vuas zoo li qub (squares, rectangles, hexagons) lossis cov duab tshwj xeeb nkhaus los sib sau ua ke ergonomic ballistic insert plates. Cov phaj tawv tawv ua los ntawm cov khoom siv no tau dhau qhov kev xeem ballistic xws li NIJ Standard-0101.06 Qib III thiab IV. Cov kev tshawb fawb sim tau qhia tias kev ntxiv kev kaw rau cov phaj ceramic tuaj yeem txhim kho lawv qhov kev tiv thaiv rau kev nkag mus. Vim nws qhov kev ua tau zoo tshaj plaws, qhov hnyav tsawg thiab tus nqi sib tw, 99% alumina bulletproof ceramic tau dhau los ua cov khoom siv tseem ceeb hauv kev lag luam phaj ceramic bulletproof.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2025