Process and properties of electroless Ni-Cu-P-ZrO2 nanocomposite coatings

被引：30

作者：

Ranganatha, S. ^{[1
]}

Venkatesha, T. V. ^{[1
]}

Vathsala, K. ^{[2
]}

机构：

[1] Kuvempu Univ, Sch Chem Sci, Dept Studies Chem, Shimoga 577451, Karnataka, India

[2] Indian Inst Sci, Dept Mech Engn, Nanotribol Lab, Bangalore 560012, Karnataka, India

来源：

MATERIALS RESEARCH BULLETIN | 2012年 / 47卷 / 03期

关键词：

Alloys; Composites; Impedance spectroscopy; Electrochemical properties; Mechanical properties; NI-CU-P; PTFE COMPOSITE COATINGS; W-P; DEPOSITION; NI-P-ZRO2; BEHAVIOR;

D O I：

10.1016/j.materresbull.2011.12.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electroless Ni-Cu-P-ZRO(2) composite coating was successfully obtained on low carbon steel matrix by electroless plating technique. Coatings with different compositions were obtained by varying copper as ternary metal and nano sized zirconium oxide particles so as to obtain elevated corrosion resistant Ni-P coating. Microstructure, crystal structure and composition of deposits were analyzed by SEM, EDX and XRD techniques. The corrosion behavior of the deposits was studied by anodic polarization, Tafel plots and electrochemical impedance spectroscopy (EIS) in 3.5% sodium chloride solution. The ZRO(2) incorporated Ni-P coating showed higher corrosion resistance than plain Ni-P. The introduction of copper metal into Ni-P-ZRO(2) enhanced the protection ability against corrosion. The influence of copper metal and nanoparticles on microhardness of coatings was evaluated. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：635 / 645

页数：11

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