无机酸铝体系氧化铝连续纤维的制备技术研究

贾玉娜, 曹旭, 焦秀玲, 陈代荣

Preparation of Alumina Ceramic Continuous Fibers with Inorganic Acidic Aluminum Sol as Precursor

JIA Yuna, CAO Xu, JIAO Xiuling, CHEN Dairong

表1 不同煅烧温度所制备纤维的密度及强度

Table 1 Densities and strengths of fibers calcined at different temperatures

Calcination conditions Tensile strength/GPa Cv of tensile strength/% Density/(g·cm-3) Crystalline size/nm Phase composition 900 ℃/30 min 1.5 12.33 2.86 9.80 γ-Al2O3 + amorphous 1000 ℃/30 min 1.6 11.26 2.91 10.36 γ-Al2O3 + amorphous 1100 ℃/30 min 2.0 12.68 2.95 10.77 γ-Al2O3 + amorphous 1200 ℃/30 min 1.4 12.17 2.85 11.63 γ-Al2O3 + amorphous