空心微珠表面化学镀Ni-Co-P合金镀层研究

用化学镀的方法将空心微珠改性,使它具有电、磁等性能,是拓宽空心微珠应用领域的一种新方法.以AgNO3代替常见的贵金属盐PdCl2为活化剂,在空心微珠表面化学镀Ni-Co-P合金镀层,用X射线衍射仪、能谱仪和扫描电镜对其进行了分析表征.结果表明,以AgNO3活化剂代替常用的PdCl2活化剂,可在空心微珠表面得到Ni-Co-P合金镀层,同时分析了以AgNO3代替常用的PdCl2活化剂制备Ni-Co-P合金镀层的形成机理.本方法能改善Ni-Co-P合金镀层的性能,成本低,具有良好的应用前景.

Electroless Ni-Co-P Plating on Fly Ash Cenosphere

Cenosphere is an advanced multifunctional micromeritic material. It is known as "Material of the Space Epoch" for such features as high compression strength, high melting point, high electrical resistance, low coefficient of heat conduction and coefficient of thermal contraction. Electroless plating is a new modification method for cenosphere to possess electrical and magnetic conductivity and extend application area. Electroless Ni-Co-P plating was carried out on cenosphere using AgNO_3 as activator to replace the conventional PdCl_2. The cenosphere particles were characterized by X-ray diffraction analysis, scanning electron microscope, energy dispersive spectroscopy during and after plating process. Resuhs show that Ni-Co-P alloy coating is obtained on fly ash cenospheres by electroless plating technique using AgNO_3 activator. The formation mechanism is suggested for electroless Ni-Co-P alloy plating on fly ash cenosphere using AgNO_3 as activator. The technology can improve the performance of Ni-Co-P alloy plating and has better application prospect for low cost