人工晶体学报2013，Vol.42Issue(7)：1384-1389,6.
非水解和水解溶胶-凝胶法合成MgAl2O4粉体对比研究
Comparative Research on the Preparation of MgAl2O4 Powders by Non-hydrolytic and Hydrolytic Sol-gel Method
摘要
Abstract
MgAl2O4 powder was synthesized via non-hydrolytic and hydrolytic sol-gel method,respectively.The phase transformation,the particle morphology and sintering properties of MgAl2O4 powders were studied by DTA-TG,XRD and FE-SEM analysis.The results showed that there existed the MgAl2O4 spinel phase with a little of periclase phase,when the hydrolytic xerogels were calcined at 900 ℃ for 0.5 h.There only was the single-phase MgAl2O4 spinel,after the non-hydrolytic xerogels were calcined at 900 ℃ for 0.5 h.The average powder size of MgAl2O4 spinel powders synthesized by hydrolytic and non-hydrolytic sol-gel method was 90 nm and 50 nm,respectively.When the synthesized MgAl2O4 spinel powders were sintered at 1600 ℃ for 3 h,most crystal grain were octahedra shape and their averge size was 1-2 μm and 0.5-1 μm,respectively.For the sintered sample prepared by hydrolytic sol-gel methrod,the MgAl2O4 spinel crystal growth was better and displayed more visible growth step.关键词
非水解溶胶-凝胶法/水解溶胶-凝胶法/镁铝尖晶石Key words
non-hydrolytic sol-gel/ hydrolytic sol-gel/ magnesium aluminate spinel分类
化学化工引用本文复制引用
魏恒勇,王合洋,魏颖娜,杨金萍,于云,卜景龙..非水解和水解溶胶-凝胶法合成MgAl2O4粉体对比研究[J].人工晶体学报,2013,42(7):1384-1389,6.基金项目
国家自然科学基金(51272066) （51272066）
中国科学院特种无机涂层重点实验室开放课题基金(KLICM-2011-01) （KLICM-2011-01）
河北省高等学校科学技术研究青年基金项目(2011124) （2011124）
