Basic Properties and Application Fields of Alumina Foam Ceramics

Alumina ua npuas ncauj ceramic yog cov khoom ntxeem tau los ntawm kev qhib - pore qauv. Nws cov khoom tseem ceeb suav nrog cov porosity siab, thaj chaw loj tshwj xeeb, zoo toughness, siab -kub tsis kam, tshuaj tiv thaiv corrosion, thiab thermal rwb thaiv tsev muaj peev xwm zoo heev. Tshwj xeeb, nws qhov porosity feem ntau tshaj 75%, thiab nws qhov chaw tshwj xeeb tuaj yeem ncav cuag ntau dua 200 m² / g; Cov yam ntxwv no endow alumina ua npuas ncauj ceramics nrog superior adsorption thiab catalytic zog. Tsis tas li ntawd, alumina ua npuas ncauj ceramics muaj qhov toughness zoo heev - tiv taus fragmentation - thiab muaj peev xwm tiv taus qhov hnyav thiab kev cuam tshuam rau txhua yam. Raws li cov yam ntxwv ntawm kev ua tau zoo, alumina ua npuas ncauj ceramics pom dav siv thoob plaws ntau qhov chaw.

Daim ntawv thov teb ntawm Alumina Foam Ceramics:

1. Lim

Lawv ua haujlwm siab -cov ntaub ntawv ntsuas kub. Lawv qhov porosity siab thiab qhov loj ntawm thaj chaw tshwj xeeb ua rau lawv tuaj yeem ntes cov khoom thiab cov kua dej kom zoo thaum tiv taus siab - qhov kub thiab txias. Tsis tas li ntawd, alumina ua npuas ncauj ceramics tuaj yeem siv los ua cov lim dej lom neeg kom tshem tawm cov kab mob ntawm cov dej, yog li ua tiav cov hom phiaj dej huv.

2. Catalysis

Qhov loj tshwj xeeb thaj chaw thiab zoo heev adsorption muaj peev xwm ntawm alumina ua npuas ncauj ceramics ua rau lawv zoo tagnrho catalyst nqa. Lawv tau ua haujlwm nyob rau hauv ntau yam tshuaj tiv thaiv catalytic, xws li catalytic oxidation ntawm VOCs (Volatile Organic Compounds) thiab kev kho mob ntawm lub tsheb tso pa tawm.

3. Thermal rwb thaiv tsev

Lawv ua haujlwm raws li siab -cov ntaub ntawv thermal rwb thaiv tsev. Lawv cov porosity siab ua tau zoo txo ​​qis kev siv hluav taws xob, yog li tswj xyuas thermal stability, thaum tib lub sijhawm muab kev tiv thaiv kub thiab tshuaj lom neeg corrosion.

4. Lwm cov teb

Lawv kuj pom cov ntawv thov hauv cov haujlwm xws li aerospace, petrochemicals, thiab electronics. Piv txwv li, alumina ua npuas ncauj ceramics tuaj yeem siv los ua thermal rwb thaiv tsev rau cov foob pob hluav taws combustion chamber, cov khoom siv hluav taws xob rwb thaiv tsev rau cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob yoj nqus.