摘要
以无水氯化铝、铝粉、碱式碳酸锆、醋酸钇和醋酸为原料,通过溶胶-凝胶法和离心纺丝技术制备了连续Al2O3-Zr O2(3mol%Y2O3)复合纤维。并用傅里叶变换红外光谱(FT-IR)仪、热重(TG)分析仪、X-射线衍射仪(XRD)、扫描电镜(SEM)对其进行了表征。结果表明,前驱体溶胶具有良好的稳定性和可纺性。凝胶纤维最大长度达70 cm,1200℃热处理后,完全转变成α-Al2O3和t-Zr O2相。凝胶纤维经干燥后,具有光滑的表面和均匀的直径,约为9μm。随着热处理温度的升高,晶粒逐渐长大、纤维强度逐渐下降。
Continuous Al2O3-ZrO2（ 3mol% Y2O3） composite fibers were synthesized via a sol-gel centrifugal spinning technique. The precursor sols were fabricated using anhydrous aluminum chloride,aluminum powder,basic zirconium carbonate,yttrium acetate and acetic acid as raw materials. The properties of composite fibers were analyzed by Fourier transform infrared（ FT-IR） spectroscopy,Thermogravimetry（ TG）,X-ray diffraction（ XRD）,and scanning electron micro-scopy（ SEM）. The results indicate that the precursor has an excellent stability and spinnability. The gel fibers have a maximum length to 70 cm,and completely transform to phase α-alumina and t-Zr O2 sintered at 1200 ℃,which have a smooth surface and uniform diameter about 9 μm after drying. As the temperature increases,the grains grow up and tensile strength gradually decrease.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第12期3163-3168,共6页
Journal of Synthetic Crystals
基金
江苏省自然科学基金(BK2009390)
