Cov yam ntxwv tseem ceeb ntawm cov refractory ceramic fibers

Cov fibers ceramic refractory yog ib hom khoom siv tsis sib xws nrog cov qauv micro spatial nyuaj. Cov fibers stacking yog random thiab tsis sib xws, thiab cov qauv geometric tsis sib xws no ua rau muaj ntau yam ntawm lawv cov khoom siv lub cev.

Qhov ceev ntawm cov fiber
Thaum cov fibers refractory ceramic uas tsim los ntawm cov iav yaj, qhov ceev ntawm cov fibers tuaj yeem suav tias yog tib yam li qhov ceev tiag tiag. Thaum qhov kub ntawm kev faib tawm yog 1260 ℃, qhov ceev ntawm cov fibers refractory yog 2.5-2.6g / cm3, thiab thaum qhov kub ntawm kev faib tawm yog 1400 ℃, qhov ceev ntawm cov fibers refractory ceramic yog 2.8g / cm3. Cov polycrystalline fibers ua los ntawm txhuas oxide muaj qhov ceev tiag tiag sib txawv vim muaj cov qhov me me ntawm cov khoom me me hauv cov fibers.
Txoj kab uas hla ntawm fiber
Lub fiber diameter ntawmCov fibers ceramic refractorytsim los ntawm txoj kev txhaj tshuaj molding kub siab yog li ntawm 2.5 txog 3.5 μ m. Lub txoj kab uas hla ntawm cov fiber refractory ceramic fibers tsim los ntawm txoj kev tig ceev kub siab yog 3-5 μ m. Lub txoj kab uas hla ntawm cov fiber refractory tsis yog ib txwm nyob hauv qhov ntau no, thiab feem ntau cov fibers yog ntawm 1-8 μm. Lub txoj kab uas hla ntawm cov fiber refractory ceramic fibers ncaj qha cuam tshuam rau lub zog thiab thermal conductivity ntawm cov khoom fiber refractory. Thaum lub txoj kab uas hla ntawm cov fiber loj heev, cov khoom fiber refractory xav tias nyuaj thaum kov, tab sis qhov nce ntawm lub zog kuj ua rau cov thermal conductivity nce ntxiv. Hauv cov khoom fiber refractory, lub thermal conductivity thiab lub zog ntawm cov fibers yog qhov sib piv. Qhov nruab nrab txoj kab uas hla ntawm alumina polycrystalline feem ntau yog 3 μ m. Lub txoj kab uas hla ntawm feem ntau ntawm cov fiber refractory ceramic fibers yog ntawm 1-8 μ.