FORMATION OF NANOCRYSTALLINE α-ALUMINAS IN DIFFERENT MORPHOLOGY FROM GEL POWDER AND BOEHMITE POWDER: A COMPARATIVE STUDY

机译：凝胶粉和勃姆石粉不同形态纳米晶α-氧化铝的形成对比研究

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Nanocrystalline α-alumina powders in different morphology obtained from gel powder and boehmite (AlOOH) powder are compared in this study. The boehmite powder in flaky morphology was prepared by reacting the gel powder with water. Spherical α-alumina was obtained by calcining the gel powder at 1000 °C for 6 h, while rod-shaped a-alumina was synthesized by calcining the boehmite powder at 1000 °C for 40 h. Phase transformation and morphology are characterized by X-ray diffraction (XRD), thermo-gravimetric method (TG-DSC) and transmission electron microscopy (TEM). The formation scheme of the spherical and rod-shaped morphology is comparatively illustrated and furthermore the phase transformation to a-alumina is discussed.

机译：在这项研究中比较了从凝胶粉末和勃姆石（AlOOH）粉末获得的不同形态的纳米晶α-氧化铝粉末。通过使凝胶粉末与水反应来制备片状形态的勃姆石粉末。通过将凝胶粉末在1000°C下煅烧6 h获得球形α-氧化铝，而通过将勃姆石粉末在1000°C煅烧40 h合成棒状α-氧化铝。通过X射线衍射（XRD），热重法（TG-DSC）和透射电子显微镜（TEM）表征相变和形态。比较地说明了球形和棒状形态的形成方案，并讨论了向α-氧化铝的相变。

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《Ceramic materials and components for energy and environmental applications》|2010年|P.71-78|共8页
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Xiaoxue Zhang; Yanling Ge; Simo-Pekka Hannula; Erkki Levaenen; Tapio Maentylae;
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2. Comparative study of nanocrystalline Zr_(0.85)Ce_(0.15)O_2 powders synthesised by spray-pyrolysis and gel-combustion methods [J] . G.E.Lascalea, D.G.Lamas, N.E.Walsoe de Reca, Materials Research Bulletin . 2005,第12期

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机译：T.E.m.勃姆石凝胶及其转化为α-氧化铝的研究

FORMATION OF NANOCRYSTALLINE α-ALUMINAS IN DIFFERENT MORPHOLOGY FROM GEL POWDER AND BOEHMITE POWDER: A COMPARATIVE STUDY

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