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镍包覆Al2O3纳米颗粒对氧化铝陶瓷与铝之间润湿性的影响

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Abstract:

采用Ni(NO3)2?6H2O前驱体液相包覆技术对纳米Al2O3颗粒进行金属化处理,经过干燥、加热分解和高温氢气还原处理后,前驱体完全转化为金属Ni晶体,从而获得镍涂覆的Al2O3颗粒。X射线衍射、透射电子显微镜和能谱分析结果表明金属镍包覆在纳米Al2O3颗粒表面。包覆的纳米Al2O3颗粒经过热压烧结制备的陶瓷体与金属铝之间的润湿角为72.5°,明显改善了陶瓷与金属之间的润湿性。

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