Low-Temperature Synthesis and Micro-Morphology Observation of Transparent MgAl2O4 Nano-Ceramics

Abstract:

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Transparent MgAl2O4 nano-ceramics were prepared by ultrahigh-pressure-sintering method, using improved nano-sized powder synthesized by high-temperature calcination. The synthesis temperatures were exactly measured by nichrome-NiSi thermocouple passing through the samples. The micromorphology of the ceramics was observed by means of dynamic force microscopy (DFM), and the relation between transparency and micro-morphology was investigated. The results show that, the sintering temperatures, now calibrated, of transparent nano-ceramics are just 540~700°C, which are much lower than those of conventional nano-ceramics and transparent ceramics, and the uniformity of grain sizes and orderliness of the grain array are beneficial to the transparency and integrity of the ceramics.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

2308-2311

DOI:

10.4028/www.scientific.net/KEM.336-338.2308

Citation:

X. H. Chang et al., "Low-Temperature Synthesis and Micro-Morphology Observation of Transparent MgAl2O4 Nano-Ceramics", Key Engineering Materials, Vols. 336-338, pp. 2308-2311, 2007

Online since:

April 2007

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Price:

$35.00

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