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›› 2001, Vol. 1 ›› Issue (3): 0-0.

• 3 •    

铝阳极氧化膜微孔内电沉积超细金属微粒

李陵川, 卢立柱, 张懿   

  1. 中国科学院化工冶金研究所， 北京 100080
  • 出版日期:2001-06-20 发布日期:2001-06-20

Preparation of AgBr Nanoparticles and Nanowires in Microemulsions

ZHOU Hai-cheng1,2, XU Sheng1, LI Ya-dong1   

  1. Inst. Chem. Metall., Chinese Academy of Sciences, Beijing 100080, China
  • Online:2001-06-20 Published:2001-06-20

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摘要： 将铝在磷酸和草酸溶液中用直流和交流阳极氧化，生长多孔氧化膜. 利用这种多孔膜微孔密度大、尺寸细小、结构均匀的特点，将其置于镍盐和钴盐溶液中，电沉积镍、钴和钴磷合金的超细微粒及纤维. 运用TEM配合超薄切片、SAD、EDAX技术和方法，对多孔膜、超细微粒及纤维进行了分析和观测. 所得的超细微粒和纤维是金属，表面有一层薄氧化膜. 镍微粒和纤维由尺寸更细小的微晶组成，而钴趋为单晶体. 磷可通过电沉积加入钴中，但会降低微粒和纤维的生长速度.

关键词: 电沉积, 超细微粒, 纤维, 阳极氧化, 多孔膜

Abstract: Anodization of aluminum was carried out to grow porous films using direct and alternating currents in the baths of phosphoric and oxalic acids. Ni, Co and Co-P were electrodeposited in the pores of the porous anodic films, forming ultrafine rod-shaped particles and wires. The particles and wires as well as the anodic films were examined using TEM assisted with SAD and EDAX. The nickel particles and wires consisted of micro-grains, while cobalt deposited in the pores appeared to be single crystals. Phosphorus can be incorporated in the metal deposits using AC electrodeposition, but the growth rate of the particles and wires containing phosphorus became slower compared with that of pure metals.

Key words: microemulsions, AgBr nanoparticles, AgBr nanowires

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