Preparation and characterization of electroless Ni-Co-P ternary alloy on fly ash cenospheres
Preparation and characterization of electroless Ni-Co-P ternary alloy on fly ash cenospheres
复制标题
粉煤灰微珠化学镀Ni-Co-P三元合金的制备及表征
DOI：
10.1016/j.surfcoat.2011.03.020
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发表时间：
2011-05-25
影响因子：
5.4
通讯作者：
Zhai, Jianping
中科院分区：
文献类型：
--
作者：
Pang, Jianfeng;Li, Qin;Zhai, Jianping
The process of ternary Ni-Co-P alloy films deposited on fly ash cenospheres (FACs) through a modified electroless plating way is documented. A pretreatment of FACs by gamma-aminopropyltriethoxy silane (APTES) was introduced prior to electroless plating, which improved the continuity and uniformity of the alloy films remarkably. During the plating process, three factors were taken into consideration to investigate the composition and the plating rate of the deposits: mole ratios of NiSO(4)/CoSO(4), the sodium hypophosphite concentration and pH of the plating bath. The obtained Ni-Co-P alloy deposits were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The results suggest that the as-plated deposits were Ni-Co-P alloy microparticles, which transformed from amorphous state to crystal phases with the increase of calcining temperature. In addition, the electroless Ni-Co-P deposits exhibit soft magnetic properties at room temperature. The magnetic performances of the deposits would be ameliorated with the increase of the cobalt content of the coating and calcining temperature. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
