Coating different thickness nickel-boron nanolayers onto boron carbide particles
作者： Xiaojing Zhu , Hongying Dong , Kathy Lu
DOI: 10.1016/J.SURFCOAT.2007.10.021
关键词:
摘要: Abstract This work is focused on electroless coating of nickel–boron (Ni–B) onto boron carbide (B4C) particles. Using NiSO4 as Ni2+ source, SnCl2 sensitizing agent, PdCl2 activation and NaBH4 reducing Ni–B nanolayers different thicknesses have been successfully coated the B4C The particles are around 2 μm in size thickness can be adjusted by changing Ni2+:B4C ratio. For targeted 1 nm thickness, layer discontinuous. When increases to 5 nm, becomes continuous completely covers particle surfaces. 10 nm or higher, nodules start form with mesh-like structures between nodules. nodule thickness. EDS results show presence oxygen coating; content decreases increases. XPS confirms that B2O3 forms Ni:B ratio processes morphological changes surfaces analyzed.
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