Taw qhia ntawm cov ntaub ntawv cov khoom sib xyaw ua ke

Composite cov ntaub ntawv feem ntau muaj cov khoom zoo nyob hauv uas sib txawv cov khoom sib txuas ua ke txhua' s lub zog. Cov khoom siv sib xyaw ua ke muaj cov yam ntxwv ntawm ob lossis ntau cov ntaub ntawv, uas tuaj yeem txhim kho qhov kev ua tau zoo ntawm ib qho khoom siv, xws li kev ntxiv dag zog, nce tawv, thiab txhim kho dielectric zog. Ceramic cov ntaub ntawv siv los ua cov cuab yeej ua haujlwm siab kub siab cov khoom siv feem ntau yog siv hauv aerospace, tub rog thiab lwm cov haujlwm. Tsis tas li ntawd, ntau cov khoom siv ua yeeb yaj kiab (ceramic) tau siv dav hauv cov tshuab, tshuab ua chemical, thiab thev naus laus zis.

Ceramic matrix puas khoom yog hom khoom siv uas sib xyaw ua ke nrog cov khoom siv sib xyaw ua ke nrog ceramic ua cov lej. Cov iav substrate tuaj yeem ua cov cua sov ua kom zoo nkauj xws li silicon nitride thiab silicon carbide. Cov kev ua tiav qib siab no muaj cov khoom zoo heev xws li kub tsis kam, siab zog thiab kev nruj, qhov hnyav lub teeb, thiab corrosion kuj. Lawv qhov kev tuag ua rau tsis muaj zog yog qhov nkig. Thaum muaj kev ntxhov siab, lawv yuav tawg, thiab txawm tawg thiab ua rau cov ntaub ntawv tsis ua haujlwm. Kev siv ntawm high-lub zog, high-elasticity fiber thiab matrix composite yog txoj kev zoo los txhim kho lub toughness thiab kev ntseeg tau ntawm ceramics. Cov fiber ntau tuaj yeem tiv thaiv qhov kev tawm ntawm cov kab nrib pleb, yog li tau txais cov fiber ntau-ntxiv ceramic matrix sib xyaw nrog kev ua kom zoo. Ceramic matrix composites muaj qhov kub thiab txias zoo heev thiab feem ntau yog siv los ua qhov kub thiab hnav tsis zoo. Qhov siab tshaj qhov ua haujlwm kub feem ntau nyob ntawm cov yam ntxwv ntawm cov substrate.