为降低碳纳米管的表面活化能,改善碳纳米管与金属基体的相容性,采用化学镀的方法,在碳纳米管表面镀覆一层金属Ni.研究了施镀时间和镀液浓度对碳纳米管表面镀Ni层厚度的影响.结果表明:随着施镀时间延长,Ni沉积颗粒变大导致镀Ni层变厚；镀液浓度增加,碳纳米管表面沉积的Ni颗粒增多,镀Ni层逐渐致密.本实验工艺条件下,镀液浓度为0.08 mol/L,反应时间为30 min时,可以在碳纳米管表面镀覆一层界面结合良好且致密的Ni层,其厚度约为10nm.热处理能有效缓解镀Ni层应力,改善界面结合.
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