Taw qhia rau alumina ceramic kub dab dej
Lub thermal txias nyhuv ntawm alumina ceramic cua sov dab dej yog muab faib ua hluav taws xob cua txias thiab ncaj qha tshav kub conduction txias.
Radiation txias:
Lub tshuab hluav taws xob ntawm cov ntaub ntawv ceramic yog tsim los ntawm ob lub phonons thiab ntau phonons ntawm cov nyhuv tsis zoo ntawm kev co random. Lub emissivity ntawm ceramics yog hais txog {{0}}.82 ~ 0.94, thaum cov hlau, xws li txhuas thiab tooj liab, tsuas yog 0.05. Ntau cov kev tshawb fawb tau pom tias cov khoom siv ceramic lossis glaze nws tus kheej muaj siab infrared emissivity, uas yog ib qho tseem ceeb parameter los hloov cov tsoos txhuas heatsink.
Direct tshav kub conduction txias:
Cov txheej txheem hluav taws xob hluav taws xob hluav taws xob yog muab faib ua cua sov lub cev → tshav kub txheej txheej → insulating txheej → tshav kub conduction txheej → aluminium heatsink. Thaum tshav kub kub xa mus rau cov txheej txheem cua sov los ntawm lub cev cua sov, cov nyhuv thermal yog attenuated rau ib qho twg, Nws yog tom qab ntawd ua rau cov txheej txheej insulating (xws li polyester, Kapton, thiab lwm yam), thiab nws cov thermal conduction yog heev. qis. Nws yog ntxiv attenuated thiab ces kis mus rau lub tshav kub conduction txheej. Ceramic kub dab dej yog ua ncaj qha los ntawm cov ntawv ceramic, uas yuav tsis txo qis kev muag khoom kub vim yog txheej insulating, thiab tuaj yeem tshem tawm cov cua sov ntau hauv tib lub sijhawm.
Rwb thaiv tsev ntawm ceramics:
Daim ntawv thov ntawm ceramic heat sink rwb thaiv tsev yuav txo tau electromagnetic cuam tshuam. Nyob rau hauv tib lub ntim ntim, ceramic kub dab dej yog superior rau lub tshav kub dissipation yam ntxwv ntawm tooj liab thiab txhuas, thiab yuav txo tau cov teeb meem tshwm sim los ntawm electromagnetic cuam tshuam thiab ua rau cov khoom ua hauj lwm stably.
Cov txiaj ntsig thiab qhov zoo:
Ceramic heatsink muaj bebefits ntawm rwb thaiv tsev, kub tsis kam, oxidation tsis kam, acid thiab alkali tsis kam, txias thiab thermal shock tsis kam thiab tsis tshua muaj thermal expansion coefficient xyuas kom meej stability ntawm ceramic kub dab dej nyob rau hauv siab thiab tsis kub ib puag ncig los yog lwm yam hnyav ib puag ncig. Ceramics yog cov ntaub ntawv inorganic, ntau nyob rau hauv txoj kab nrog kev tiv thaiv ib puag ncig.
Qhov loj tshaj plaws feature yog cov qauv ntawm micro qhov nyob rau hauv lub ceramic nws tus kheej, uas zoo heev tsub kom lub tshav kub dissipation cheeb tsam nyob rau hauv kev sib cuag nrog huab cua thiab zoo heev txhim khu lub tshav kub dissipation nyhuv. Nyob rau hauv tib lub xyoo-rau-xyoo tej yam kev mob, lub tshav kub dissipation nyhuv yog pom tseeb dua hais tias ntawm ultra tooj liab thiab txhuas nyob rau hauv lub ntuj convection xeev thiab nyob rau hauv lub kaw ib puag ncig.
Daim ntawv thov ntawmCeramic heatsink:
Ceramic heatsink yog dav siv nyob rau hauv LED teeb pom kev zoo, high-frequency vuam tshuab, lub hwj chim amplifier / suab, lub hwj chim transistor, fais fab module, nti IC, inverter, network / broadband, UPS fais fab mov, khoom siv hluav taws xob, thiab lwm yam.
