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Influence of particle size and surfactants on uniformity and quantity of silicon carbide particles in electrodeposited nickel-silicon carbide coatings
Journal of Central South University ( IF 4.4 ) Pub Date : 2021-07-22 , DOI: 10.1007/s11771-021-4722-x
Hong-min Kan 1, 2 , Yuan-yuan Meng 1, 2 , Ramana G. Reddy 3
Affiliation  

The electrodeposition of nickel-silicon carbide coatings on a copper electrode was done by mixing SiC particles in the nickel electrodeposition solution. The influence of surfactants and silicon carbide particle size on uniformity and quantity of silicon carbide particles in nickel-silicon carbide composite coatings was investigated. It was found that particle size affects the nucleation overpotential, with 40 nm silicon carbide nanoparticles more effective in promoting nickel nucleation than 500 nm particles due to an increase in active nucleation sites. In terms of surfactants, anionic surfactant sodium dodecyl sulfate (SDS) produced better dispersion of 40 nm silicon carbide particles than cationic surfactant cetyltrimethyl ammonium bromide (CTAB), but little difference was found between the two when 500 nm silicon carbide particles were used. Thus, although the suspension of silicon carbide particles can be improved and their co-deposition can be promoted with a cationic surfactant CTAB, it is less effective than an anionic surfactant SDS in terms of surface finish.



中文翻译:

粒径和表面活性剂对电沉积镍-碳化硅涂层中碳化硅颗粒均匀性和数量的影响

通过在镍电沉积溶液中混合 SiC 颗粒,在铜电极上电沉积镍 - 碳化硅涂层。研究了表面活性剂和碳化硅粒径对镍-碳化硅复合涂层中碳化硅颗粒均匀性和数量的影响。发现粒径影响成核过电位,由于活性成核位点的增加,40 nm 碳化硅纳米粒子比 500 nm 粒子更有效地促进镍成核。在表面活性剂方面,阴离子表面活性剂十二烷基硫酸钠(SDS)比阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)对40nm碳化硅颗粒产生更好的分散作用,但当使用500nm碳化硅颗粒时,两者差异不大。

更新日期:2021-07-22
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