用气-液两相稳定法制备了Cu-Ag复合纳米粉.并用XRD、HRTEM、DSC-TG、红外光谱、化学分析和氧含量分析等手段研究了粉体的相结构、表面组成、形貌、粒度分布和氧化特性.结果表明,Cu-Ag复合纳米颗粒具有壳核结构,核为纳米Cu-Ag,壳为厚度10 nm左右的松油醇(C10H18O)分子层和氧化层双层结构,粉体的粒度分布为20～150 nm.在空气中,220℃包覆在Cu-Ag复合纳米粒子表面的松油醇分子开始氧化,进而导致Cu-Ag复合纳米粒子在340℃左右迅速氧化,680℃左右Cu-Ag复合纳米粒子完全氧化.温度低于220℃时,气-液两相稳定法制备的Cu-Ag复合纳米粉的抗氧化能力比气相稳定法制备的Cu-Ag复合纳米粉的抗氧化能力好.
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