Preparation and Characterization of Nanocrystalline CaO-ZrO2 Powders by Microwave Pyrolysis

Autor:	Ke Ke Guan, Wu Hao, Fang Lei Tong, Qian Nan Mao, Bing Bing Fan, Chen Yang Wang, Xiao Xuan Pian, Li Na Miao, Hao Chen
Rok vydání:	2014
Předmět:	Phase transition Materials science Micrograph Mechanical Engineering Microwave pyrolysis Analytical chemistry Nanocrystalline material Characterization (materials science) Chemical engineering Average size Mechanics of Materials Phase (matter) General Materials Science Pyrolysis
Zdroj:	Key Engineering Materials. :97-100
ISSN:	1662-9795
DOI:	10.4028/www.scientific.net/kem.602-603.97
Popis:	CaO(15%)-ZrO2nano-powders were prepared by microwave pyrolysis in a multi-model chamber at the temperature ranging from 650°C to 800°C, with the precursor processed at different reaction temperature from 0°C to 80°C by chemical co-precipitation method. XRD and SEM techniques were used to characterize the phase transition and micrograph of powders. It is found that the content of m-ZrO2phase decreased with the increasing of reaction temperature and pyrolysis temperature. The high dispersed and superfine nano-powders were obtained at the pyrolysis temperature of 750°C for 20 min at 80°C. And only cubic ZrO2phase were detected in CaO (15%)-ZrO2powders and the average size of the powders is about 41 nm.
Databáze:	OpenAIRE
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