Structural changes in high-temperature synthesis of luminescent alumina ceramics

3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures (Saint Petersburg OPEN 2016)

Zvonarev, S.V.^1 ; Kortov, V.S.^1 ; Ryabinina, M.V.^1 ; Kiryakov, A.N.^1

Ural Federal University, Ekaterinburg

620002, Russia^1

关键词: Alumina ceramic;    High temperature;    High-temperature synthesis;    Nano powders;    Reducing environment;    Synthesis parameters;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/741/1/012037/pdf
DOI  :  10.1088/1742-6596/741/1/012037

来源: IOP

【 摘 要 】

Scanning electron microscopy was used to study structural changes in luminescent alumina ceramics which was synthesized from nanopowder at high temperatures in reducing environment. An effect of synthesis parameters on size-distribution of grains, their shape and a number of pores in the samples under study was determined. It was found that in a certain temperature range grains are the same ones in the precursor nanopowder, which is associated with the emergence of nanoparticles of lower aluminum oxides.