標題: Colloidal dispersion of nano-scale ZnO powders using amphibious and anionic polyelectrolytes
作者: Ying, Kuo-Liang
Hsieh, Tsung-Eong
Hsieh, Yi-Feng
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: ZnO;Nano-scale dispersion;Polyelectrolytes;Nano-ZnO target
公開日期: 1-Apr-2009
摘要: This article describes the dispersion of aqueous suspensions containing nano-scale ZnO powder by utilizing a hybrid of chemical dispersant and mechanical mixing/grinding process. The chemical dispersants included anionic or amphibious polyelectrolytes, i.e., sodium salt of polymethylacrylic acid (PMAA-Na) or polyacrylamide/(alpha-N, N-dimethyl-N-acryloyloxyethyl) ammonium ethanate (PDAAE). The optimum critical concentrations for each dispersants to achieve the lowest viscosity, smallest final sediment volume and particle size (d(50)) for the nano-ZnO suspensions, 3 wt.% for PMAA-Na and 5 wt.% for PDAAE, were identified. The finely dispersed nano-ZnO powders were transferred to prepare sputtering target. The root-mean-square roughness (R(Rms)) of thin films deposited by utilizing such a target was found to be 2.05 nm, which was lower than the RRMS of the film (approximate to 27.57 nm) deposited by using a commercial ZnO target comprised of micro-scale granules. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ceramint.2008.05.014
http://hdl.handle.net/11536/7416
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2008.05.014
期刊: CERAMICS INTERNATIONAL
Volume: 35
Issue: 3
起始頁: 1165
結束頁: 1171
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