Silicon carbide thermal conductive khoom

Lub thermal conductivity ntawm SiC cov ntaub ntawv, zoo li feem ntau dielectric khib nyiab, feem ntau cuam tshuam los ntawm kev sib kis ntawm thermoelastic nthwv dej (hu ua phonons). Cov thermal conductivity ntawm SiC cov ntaub ntawv feem ntau yog nyob ntawm: 1) qhov ntau ntawm sintering pab, stoichiometric piv, tshuaj muaj zog, thiab lwm yam grain ciam teb thickness thiab crystallinity; 2) Cov qoob loo loj; 3) Hom thiab concentrations ntawm impurity atoms hauv SiC crystals; 4) Sintering cua; 5) Kev kho cua sov tom qab sintering, thiab lwm yam. SiC muaj cov khoom zoo xws li thermal conductivity, loj bandgap dav, siab electron saturation migration npaum li cas, thiab siab tseem ceeb heev tawg hluav taws xob teb. Nws qhov kev ua tau zoo tshaj plaws ua rau qhov tsis txaus ntawm cov khoom siv semiconductor thiab cov cuab yeej siv hauv cov ntawv thov, thiab muaj cov ntawv thov dav dav hauv thaj chaw xws li tsheb hluav taws xob thiab cov chips sib txuas lus. Vim nws txoj kev ntseeg siab dua, kev ua haujlwm siab dua, qhov me me, thiab siab dua qhov hluav taws xob, SiC tuaj yeem siv rau cov khoom siv hluav taws xob xws li lub rooj tsav tsheb loj, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob, zoo heev txhim kho kev ua haujlwm thiab ua kom muaj zog ntawm cov tsheb fais fab. . Nyob rau tib lub sijhawm, SiC muaj cov thermal conductivity zoo, thiab kev siv SiC semiconductor fais fab khoom siv tuaj yeem txo cov roj teeb loj thiab hloov lub zog zoo dua, yog li txo tus nqi ntawm cov khoom siv sib dhos. SiC ceramics, raws li kev ua tau zoo ntawm cov khoom siv ceramic, muaj cov khoom siv thermal zoo heev thiab tuaj yeem siv dav hauv kev kub-kub, cua sov, thiab tshav kub pauv kev lag luam.