Refractory ceramic fibers yog ib hom ntawm cov khoom ntxeem tau tsis tu ncua nrog cov qauv micro spatial complex. Lub stacking ntawm fibers yog random thiab disorderly, thiab no irregular geometric qauv ua rau muaj ntau haiv neeg ntawm lawv lub cev zog.
Fiber ceev
Refractory ceramic fibers ua los ntawm iav melting txoj kev, qhov ntom ntawm cov fibers tuaj yeem suav tias yog tib yam li qhov tseeb ntom. Thaum qhov kev faib tawm kub yog 1260 ℃, qhov ceev ntawm refractory fibers yog 2.5-2.6g / cm3, thiab thaum lub sij hawm faib kub yog 1400 ℃, qhov ceev ntawm refractory ceramic fibers yog 2.8g / cm3. Cov polycrystalline fibers ua los ntawm txhuas oxide muaj qhov sib txawv qhov sib txawv vim qhov muaj micro pores ntawm microcrystalline hais hauv cov fibers.
Fiber txoj kab uas hla
Fiber diameter ntawmrefractory ceramic fibersua los ntawm high-temperature yaj txhaj molding txoj kev ntawm 2.5 mus rau 3.5 μ m. Cov fiber ntau txoj kab uas hla ntawm refractory ceramic fibers uas ua los ntawm high-kub ceev spinning txoj kev yog 3-5 μ m. Lub cheeb ntawm refractory fibers tsis yog ib txwm nyob rau hauv no ntau yam, thiab feem ntau fibers nyob nruab nrab ntawm 1-8 μm. Lub cheeb ntawm refractory ceramic fibers ncaj qha cuam tshuam lub zog thiab thermal conductivity ntawm refractory fiber ntau. Thaum cov fiber ntau txoj kab uas hla yog qhov loj, cov khoom siv fiber ntau refractory xav tias nyuaj thaum kov, tab sis qhov nce hauv lub zog kuj nce thermal conductivity. Hauv cov khoom siv fiber ntau refractory, thermal conductivity thiab lub zog ntawm fibers yog qhov sib txawv inversely proportional. Qhov nruab nrab txoj kab uas hla ntawm alumina polycrystalline feem ntau yog 3 μ m. Txoj kab uas hla ntawm feem ntau ntawm refractory ceramic fibers yog nyob nruab nrab ntawm 1-8 μ.
Post lub sij hawm: May-04-2023
