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Citation: Gu Min, Yang Fang-Zu, Huang Ling, Yao Shi-Bing, Zhou Shao-Min. The Formation of Copper Electrodeposits with Highly Preferred Orientation and Their Surface Morphology[J]. Acta Physico-Chimica Sinica, ;2002, 18(11): 973-978. doi: 10.3866/PKU.WHXB20021103 shu

The Formation of Copper Electrodeposits with Highly Preferred Orientation and Their Surface Morphology

1.
Department of Chemistry , Shantou Universitry, Shantou　515063;Department of Chemistry, State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry, Xiamen University, Xiamen　361005

Received Date: 18 February 2002
Available Online: 15 November 2002

Cu electrodeposits with highly preferred orientations were obtained from H2SO4-CuSO4 electrolytic solution. XRD results indicated that at current densities 1.0～6.0 A•dm－2 and 15.0 A•dm－2,the obtained Cu electrodeposits were respectively shown in (220) and (111) highly preferred orientations. The value of texture coefficient of Cu electrodeposited at a stationary current density was increased with its thickness. SEM results revealed that the surface morphology of the electrodeposits with (220) texture obtained at 4.0 A•dm－2 appeared in network combined with needle crystals, and texture with (111) at 15.0 A•dm－2 in hexa nal pyramid. The changes of the preferred orientation effected by current density were mainly attributed to the competitions between the grains growing direction and the rate during Cu electro crystallization.
- Electrodeposition;Copper electrodeposit;Highly preferred orientation; Surface morphology
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