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有机酸对氧化铝粉体砂磨效果的影响

DOI: 10.14062/j.issn.0454-5648.2015.12.13

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Abstract:

采用砂磨的方法对α-Al2O3粉体进行改性。利用X射线衍射、透射电子显微镜、扫描电子显微镜、Fourier红外光谱等分析方法研究了有机酸添加剂提高砂磨效果的机理。结果表明,当有机酸的加入量为2%时,氧化铝粉体粒径从5μm减小到155nm左右、粒度分布变窄,砂磨效果明显。有机酸的加入改变了粉体表面双电层结构,在粉体表面形成有机包覆层,改变了氧化铝粉体表面性质,使粉体在溶液中分散稳定,提高了砂磨效率。

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