Cov khoom tseem ceeb ntawm SiC ceramic membrane
Hluav taws xob rwb thaiv tsev: Silicon carbide ceramics feem ntau muaj cov khoom siv hluav taws xob zoo, uas yog qhov tseem ceeb tshwj xeeb hauv qhov chaw kub thiab txias, ua kom nws ruaj khov hauv cov ntawv thov uas yuav tsum muaj hluav taws xob rwb thaiv tsev.
Mechanical zog: Silicon carbide ceramics muaj qhov hardness siab heev thiab txhua yam muaj zog thiab tuaj yeem tiv taus siab thiab siab load. Qhov no ua rau nws ua tau zoo nyob rau hauv cov xwm txheej uas yuav tsum tau hnav tsis kam thiab yaig kuj.
Corrosion kuj: Silicon carbide ceramics muaj kev tiv thaiv siab rau ntau cov roj corrosive thiab kua, ua rau lawv ua tau zoo nyob rau hauv corrosive ib puag ncig xws li acid thiab alkali kev kho mob hauv kev lag luam tshuaj.
Kub kub kuj: Silicon carbide ceramics muaj qhov kub thiab txias ua haujlwm tau zoo thiab tuaj yeem tswj tau lawv cov kev ruaj ntseg thiab lub zog txhua yam hauv qhov kub thiab txias. Feem ntau hais lus, nws tuaj yeem tiv taus qhov kub siab hauv qab 1500 degree, uas ua rau silicon carbide ceramic membrane cov khoom tsim nyog rau cov txheej txheem kub kub xws li petrochemicals, metallurgy, thiab iav.
Thermal conductivity: Silicon carbide muaj cov thermal conductivity zoo heev, uas ua rau silicon carbide ceramic membrane cov khoom siv tau zoo heev hauv qee qhov kev siv uas yuav tsum muaj thermal conductivity, xws li cov khoom siv hluav taws xob thiab cov ntsuas kub siab.
Cov qauv thiab kev npaj ntawm SiC ceramic membranes
SiC ceramic daim nyias nyias tuaj yeem muab faib ua tubular daim nyias nyias thiab tiaj daim nyias nyias raws li cov txheej txheem sib txawv. Ntawm lawv, tubular daim nyias nyias yog tsim los ntawm cov txheej txheem sib cais, cov txheej txheem kev hloov pauv, thiab cov txheej txheem txhawb nqa, thaum cov txheej txheem tiaj tus yog tsim los ntawm cov txheej txheem sib cais thiab cov txheej txheem txhawb nqa. Cov txheej txheem sib cais ua lub luag haujlwm tseem ceeb hauv kev pom, thiab nws cov tuab feem ntau yog 15μm. Lub thinner txheej membrane, qhov siab dua qhov pom kev ua haujlwm thiab qis zog siv. Cov txheej txheem kev hloov pauv npog lub cev txhawb nqa, thiab txo qhov pore loj thiab txhim kho qhov pom kev ua haujlwm zoo los ntawm kev sib txuam ntawm cov khoom los yog nkag mus rau hauv daim nyias nyias pores ntawm lub cev txhawb nqa. Lub cev txhawb nqa muaj zog txhua yam muaj zog thiab flux.
Txoj kev npaj ntawm SiC ceramic membranes suav nrog immersion thiab rub txoj kev, txau txoj kev, tshuaj vapor deposition method (CVD) thiab theem transformation txoj kev. Ntawm lawv, txoj kev immersion thiab rub txoj kev tau dhau los ua ib txoj kev npaj siv ntau tshaj plaws vim nws txoj haujlwm yooj yim thiab siv hluav taws xob tsawg. Txoj kev txau yog ib qho yooj yim rau huab hwm coj tsim, yooj yim rau kev khiav lag luam thiab yooj yim los tswj cov yeeb yaj kiab thickness. Cov tshuaj vapor deposition txoj kev tuaj yeem npaj cov khoom siv ceramic nrog cov pore me me thiab kev npaj kub tsawg, tab sis cov txheej txheem ua yeeb yaj kiab yog hnyav thiab cov txheej txheem yog cumbersome. Txoj kev hloov theem ua rau cov ceramic slurry los ntawm cov kua rau cov khoom los ntawm txoj kev ntub los yog qhuav.
Daim ntawv thov teb ntawm SiC ceramics membranes
SiC ceramics tau siv dav hauv ntau qhov chaw vim lawv qhov kev ua tau zoo. Hauv kev lag luam aerospace, nws tuaj yeem siv los tsim cov khoom siv hluav taws xob kub thiab cov khoom siv cav; hauv kev siv tshuab hluav taws xob, nws tuaj yeem siv los tsim cov khoom siv hluav taws xob sib xyaw ua ke, cov roj teeb nyias nyias thiab lwm yam khoom siv hluav taws xob; Nyob rau hauv lub tshav pob ntawm lub zog, nws yuav siv tau los tsim high-temperature tshav kub exchangers, petrochemical khoom, thiab lwm yam. Tsis tas li ntawd, nyob rau hauv lub teb ntawm electronics thiab optoelectronics, silicon carbide ceramic membranes kuj yuav siv tau raws li kev tsim khoom rau semiconductor cov ntaub ntawv thiab optoelectronic. cov khoom siv. Hauv kev lag luam tshuaj, nws cov kev tiv thaiv corrosion thiab kub tsis kam ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim cov khoom siv corrosion-resistant, pipelines, li qub, thiab lwm yam.
