A mechanistic study on the synthesis of β-Sialon whiskers from coal fly ash

Title: A mechanistic study on the synthesis of β-Sialon whiskers from coal fly ash
Creator: Zhao, H.; Wang, P. Y.; Yu, J.L.; Zhang, J.
Relation: Materials Research Bulletin Vol. 65, p. 47-52
Publisher Link: http://dx.doi.org/10.1016/j.materresbull.2015.01.039
Publisher: Pergamon
Resource Type: journal article
Date: 2015
Description: β-Sialon whiskers were produced at 1420°C through carbothemal reduction reaction under nitrogen atmosphere using fly ash from coal-fired power plants. The effects of sintering time on the phase formation and morphology of the products were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) techniques. Rod-like β-Sialon whiskers with the diameter of 100-500 nm were successfully formed. With increasing sintering time, bead-like morphology during the growth process of the whiskers was found, and growth mechanism of β-Sialon whiskers was also discussed in detail. The growth mechanism proposed in this study was different from the conventional vapor-liquid-solid (VLS) mechanism.
Subject: composites; nanostructure; nitrides; chemical synthesis; crystal growth
Identifier: http://hdl.handle.net/1959.13/1321582
Identifier: uon:24403
Identifier: ISSN:0025-5408
Language: eng
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