Txij li thaum xyoo pua 21st, cov mos txwv tsis zoo ceramics tau tsim sai nrog ntau hom, suav nrog Alumina, Silicon Carbide, Boron carbide, Silicon Nitride, Titanium Boride, thiab lwm yam. Ntawm lawv, Alumina Ceramics (Al2O3), Silicon Carbide ceramics (SiC) thiab Boron Carbide Ceramics. (B4C) yog cov siv dav tshaj plaws.
Alumina ceramics muaj qhov ceev tshaj plaws, tab sis kuj tsis tshua muaj zog, tsis tshua muaj qhov pib ua haujlwm, thiab tus nqi qis.
Silicon carbide ceramics muaj qhov ntom ntom nti thiab siab tawv thiab yog cov nqi sib txuas lus zoo, yog li lawv kuj muaj cov ntawv xov xwm tshaj plaws hauv Suav teb.
Boron carbide ceramics nyob rau hauv cov hom ntawm ceramics nyob rau hauv qhov tsawg tshaj plaws ceev, lub siab tshaj plaws hardness, tab sis nyob rau tib lub sij hawm nws cov kev xav tau kuj yog siab heev, xav tau kub thiab high-pressure sintering, thiab yog li ntawd tus nqi kuj yog siab tshaj ntawm peb. ceramics.
Hauv kev sib piv ntawm peb cov khoom siv ballistic ceramic ntau dua, Alumina ballistic ceramic tus nqi qis tshaj plaws tab sis qhov kev ua tau zoo tshaj plaws ntawm silicon carbide thiab boron carbide, yog li cov khoom siv tam sim no ntawm ballistic ceramic feem ntau yog silicon carbide thiab boron carbide bulletproof.
Silicon carbide covalent bonding yog qhov muaj zog heev thiab tseem muaj lub zog sib txuas ntawm qhov kub thiab txias. Cov txheej txheem no muab silicon carbide ceramics zoo heev, siab hardness, hnav tsis kam, corrosion kuj, siab thermal conductivity, zoo thermal shock kuj thiab lwm yam khoom; Nyob rau tib lub sijhawm, silicon carbide ceramics yog tus nqi nruab nrab thiab tus nqi tsim nyog, thiab yog ib qho kev cog lus zoo tshaj plaws cov ntaub ntawv tiv thaiv armor. SiC ceramics muaj ntau txoj kev loj hlob nyob rau hauv kev tiv thaiv armor, thiab cov ntawv thov yuav muaj ntau haiv neeg nyob rau hauv cov cheeb tsam xws li cov txiv neej-portable khoom thiab tshwj xeeb tsheb. Raws li cov khoom siv tiv thaiv, xav txog yam xws li cov nqi thiab kev siv tshwj xeeb, cov kab me me ntawm cov ceramic panels feem ntau yog sib txuas nrog cov khoom siv rov qab los ua cov phiaj xwm ceramics kom kov yeej qhov tsis ua haujlwm ntawm ceramics vim kev nyuaj siab tensile thiab xyuas kom meej tias tsuas yog ib daim xwb. yog crushed yam tsis muaj kev puas tsuaj rau lub armor tag nrho thaum lub projectile nkag mus.
Boron carbide yog lub npe hu ua thib peb hardest khoom tom qab pob zeb diamond thiab cubic boron nitride, nrog hardness txog li 3000 kg / mm2; tsawg ntom, tsuas yog 2.52 g / cm3,; siab modulus ntawm elasticity, 450 GPa; Nws coefficient ntawm thermal expansion yog tsawg, thiab thermal conductivity yog siab. Tsis tas li ntawd, boron carbide muaj kev ruaj ntseg zoo, acid thiab alkali corrosion kuj; thiab nrog feem ntau ntawm cov hlau molten tsis ntub thiab tsis cuam tshuam. Boron carbide kuj muaj peev xwm nqus tau neutron zoo heev, uas tsis muaj nyob hauv lwm cov ntaub ntawv ceramic. Qhov ntom ntawm B4C yog qhov qis tshaj plaws ntawm ntau yam siv armor ceramics, thiab nws cov qauv siab ntawm elasticity ua rau nws xaiv zoo rau cov tub rog armor thiab cov khoom siv hauv qhov chaw. Cov teeb meem tseem ceeb nrog B4C yog nws tus nqi siab thiab brittleness, uas txwv nws txoj kev siv dav raws li cov cuab yeej tiv thaiv.
