用X光电子能谱(XPS)研究了NiTi形状记忆合金经酸、碱处理后表面氧化膜成分和结构的变化.结果表明,未经处理的NiTi合金表面最外层氧化膜主要由TiO2、TiO和少量的Ni组成,酸、碱处理后,最外层氧化膜由TiO2、Ni2O3组成,但经碱处理后,氧化膜的厚度大大增加.
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