摘要
采用化学镀的方法,在碱性镀液中以(NH4)2SO4作为缓冲剂,NaH2PO2作为还原剂,NiSO4和CoSO4为主盐在玻璃纤维表面制备了镍–钴–磷(Ni–Co–P)合金。用扫描电镜、X射线能谱、差示扫描量热法、X射线衍射等分析手段表征镀层的性能。研究发现:三元络合剂显著改善镀液的稳定性和镀层的形貌。综合考虑镀层速率、镀液的稳定性与镀层的电阻率,选择摩尔比n(H2PO2–)/n(Ni2++Co2+)=2～2.5为宜。化学镀Ni–Co–P合金层玻璃纤维的热稳定性好,适宜的工作温度范围为:常温～180℃。当镀层中磷的质量分数为8.1%～23.6%时,镀层为典型的非晶结构。化学镀Ni63.2Co16.5P20.3合金的晶化过程为:Ni→Ni+Ni5P2→Ni+Ni5P2+Ni12P5+Ni3P→Ni+Ni12P5+Ni3P。镀层合金为软磁性材料,导电玻璃纤维的磁损耗很小,介电损耗很大,是一种典型的电损耗材料。
Nickel-cobalt-phosphor （Ni-Co-P） alloy was deposited on the surface of glass fiber by electroless plating from a bath using ammonium sulfate as a buffer agent, hypophosphite as a reducing agent, and nickel sulfate and cobalt sulfate as the main salts. The deposits were characterized using a scanning electron microscope, energy dispersive X-ray spectroscopy, differential scanning calorimetry, and X-ray diffraction. It is found that the presence of ternary complexing agents in the bath is able to improve the stability of the bath and the morphology of the deposits. Comprehensively considering the deposition rate, bath stability and resistivity, mole ratios of n （H2PO2^-）/n（Ni^2＋＋Co^2＋）=2-2.5 were chosen. Electroless plating of Ni-Co-P alloy on the surface of glass fiber has good heat stability. The suitable working temperature range is lower than 180℃.The deposits have a typical amorphous structure when the mass fraction of phosphorus in deposits ranges from 8.1% to 23.6%. The crystallization behavior of Ni63.2Co16.5P20.3 was studied. The crystallization processes of the film are as follows： Ni→Ni＋Ni5P2→Ni＋Ni5P2＋Ni12P5＋Ni3P→Ni＋ Ni12P5＋Ni3P. The alloy as plated is a soft magnetic material. There is almost no magnetic loss of the conducting glass fibers, but the dielectric loss of the conducting glass fibers is extremely large, the plating is a typical dielectric loss material.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2006年第12期1485-1490,共6页
Journal of The Chinese Ceramic Society
基金
航天支撑技术基金(2002EK1803)
关键词
玻璃纤维
镍-钴-磷合金
电磁参数
化学镀
glass fiber
nickel-cobalt-phosphor alloy
electromagnetic parameters
electroless plating
