Raws li cov xov xwm tshiab kawg, California-based MATECH tau kos npe rau daim ntawv cog lus nrog ib tus neeg ua haujlwm tiv thaiv tseem ceeb rau kev txhim kho cov cuab yeej siv hluav taws xob siab tshaj plaws rau kev sim davhlau siv lub tuam txhab carbon-fiber-reinforced ZrOC (C/ZrOC) ceramic-matrix composites.In 2023. , MATECH ntse tsim 50 kilograms ntawm ceramic-matrix composite khoom (CMC) rau xyoo no txoj haujlwm.
MATECH txoj kev loj hlob ntawm ultra-high-temperature (UHT), zoo heev dimensionally ruaj khov structural insulators pab kov yeej cov high-temperature cov nyom txuam nrog hypersonic missile casings ntawm high speeds; cov foob pob hluav taws no kub heev thaum lawv ya ntawm cov xwm txheej hypersonic, yog li lawv ya sai, qhov kub dua lawv tau txais.
MATECH's C/ZrOC ceramic matrix composite yog cov khoom siv qis qis hypersonic uas yog tus nqi qis, scalable thiab yooj yim rau fabricate. Nws tau raug sim ntawm qhov kub siab tshaj ntawm 2760 degree ntawm qhov kev kub ntxhov siab nyob rau hauv ntau lub chaw soj nstuam tseem ceeb. Tsis tas li ntawd, lub tuam txhab hais tias tus nqi tsim khoom ntawm cov khoom siv ceramic no sib npaug los yog tsawg dua nws cov khoom hnyav dua, muaj peev xwm tsawg dua cov khoom siv hlau.
Ntxiv nrog rau cov foob pob hluav taws xob hypersonic rau kev tiv thaiv, MATECH's C / ZrOC Thermal Protection System (TPS) yog qhov zoo tshaj plaws rau cov ntaub thaiv hluav taws xob rov siv tau ntawm kev lag luam dav hlau. Tsis tas li ntawd, MATECH's C / ZrOC tuaj yeem tiv taus huab cua kub heev ntawm lunar rov qab thiab Mars rov qab los.
MATECH's Long-Term Kev cog lus rau Ultra-High Temperature Composites
Txij li thaum nws tsim nyob rau hauv 1989, MATECH tau cog lus rau kev lag luam ntawm high thiab ultra-siab kub (UHT) ceramic fiber thiab ceramic matrix composite technologies.MATECH tau tsim ntau yam ntawm pre-ceramic polymers rau fabrication ntawm Silicon Carbide (SiC) , Silicon Nitride / Silicon Carbide (SiNC), Silicon Oxide Carbon (SOC), Silicon Nitride (Si3N4) thiab Hafnocene Carbide (HfC). Tag nrho cov no yog siv nyob rau hauv high-temperature structural applications.
Hypersonic qhov ntswg cov lus qhia yog arguably qhov xav tau tshaj plaws ultra-siab kub (UHT) daim ntaub ntawv rau missile cov ntaub ntawv. Kev tuav lub cev yog qhov tseem ceeb rau kev ua haujlwm missile. High-density thermally pressed ceramics xws li silicon carbide muab qhov qis tshaj oxidation thiab ablation. Txawm li cas los xij, ceramics muaj qhov tsis zoo thermal poob siab thiab tsis muaj zog. Nyob rau hauv sib piv, ceramic matrix composites (CMCs) muab siab toughness.
Tam sim no txoj kev npaj ib txwm rau ceramic matrix composites yog pib nrog 40-50% ntom CMC thiab tom qab ntawd siv Field Assisted Sintering Technique (FAST), uas xaus nrog qhov ntom ntom uas nyob deb ntawm 100% thiab ua haujlwm tsis zoo li cov fibers. puas lawm. Lub tuam txhab thiaj li lees paub qhov yuav tsum tau ua kom denser los ntawm qhov pib ntawm lub preform, nrog porosity mus rau 7-10%, uas lub tuam txhab muaj txij li thaum ua tau zoo qhia tau ua tiav nyob rau hauv tsawg tshaj li 10 feeb nrog mus txog 99.9% ntom SiC / SiC nrog lub zog thiab toughness xav tau ntawm CMC.
Carbon-Carbon (C / C) composites yog thawj zaug tsim nyob rau hauv 1958 raws li ib tug ballistic re-entry lub qhov ntswg cov ntaub ntawv, thiab thaum High Density Carbon-Carbon (HDCC) composites muaj zoo heev zog, lawv muaj heev ablation tus nqi ntawm kub thiab stagnation. ntws siab. Raws li MATECH no tau tsim cov khoom siv ablation tsawg heev, hu ua C / ZrOC composites uas yog tus nqi qis, tsim khoom loj thiab yooj yim los tsim. Nrog kev txhawb zog los ntawm US Missile Defense Agency, MATECH tau ua tiav qhov kev tsim nyog ua ntej rau kev siv hluav taws xob tiv thaiv hluav taws xob thiab hluav taws xob rau nws cov Ultra High Temperature (UHT) C / ZrOC TPS thiab propulsion variants. Cov no tau tsim tshwj xeeb rau kev ua haujlwm siab thiab yooj yim ntawm kev tsim khoom kom tau raws li kev tiv thaiv tseem ceeb thiab kev xav tau ntawm pej xeem.
Thiab thaum Lub Ib Hlis, MATECH tshaj tawm tias nws tau tsim cov roj carbon fiber ntau ntxiv cov pa roj carbon matrix (C / C) cov khoom sib xyaw. Qhov kev siv thev naus laus zis tshiab no yuav ua rau C / C composites 20 npaug ntau dua rau ablation thiab oxidation dua li tam sim no muaj cov ntaub ntawv C / C, thiab xav tias yuav siv rau hauv qhov xav tau ntawm lub qhov ntswg thiab cov khoom ntug zoo xws li cov foob pob hluav taws xob thiab ballistic rov nkag.