Influence of duty cycle on the microstructure and microhardness of pulse electrodeposited Ni-CeO2 nanocomposite coating

被引：36

作者：

Sen, Ranjan ^{[1
]}

Das, Siddhartha ^{[1
]}

Das, Karabi ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

MATERIALS RESEARCH BULLETIN | 2012年 / 47卷 / 02期

关键词：

Composites; Nanostructures; Chemical synthesis; X-ray diffraction; Surface properties; PARAMETERS; HARDNESS;

D O I：

10.1016/j.materresbull.2011.10.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Ni-CeO2 nanocomposite coatings have been synthesized by pulse electrodeposition technique with different duty cycles (6, 9 and 17%) from a Watts-type electrolyte containing nano-sized CeO2 particles. The XRD results show that the (2 0 0) orientation is dominant over (1 1 1) orientation in the Ni-CeO2 nanocomposite coatings prepared with 6 and 17% duty cycles, while the opposite is true for the sample prepared with 9% duty cycle. The maximum amount of CeO2 (10 wt%) incorporation in the coating occurs at 9% duty cycle. The crystallite size changes from micrometer to nanometer as the duty cycle changes from 6 to 9%. The hardness increases as the duty cycle increases from 6 to 17%. However, a coating with optimum smoothness and small number of microcracks is obtained at 9% duty cycle. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：478 / 485

页数：8