The effect of SiO2 nanoparticles dispersion on physico-chemical properties of modified Ni-W nanocomposite coatings

被引：28

作者：

Sassi, W. ^{[1
,2
]}

Dhouibi, L. ^{[1
]}

Bercot, P. ^{[2
]}

Rezrazi, M. ^{[2
]}

机构：

[1] Univ Tunis El Manar, ENIT, Equipe COPROMET, Unite Rech Mecan Energet, Tunis 1002, Tunisia

[2] Univ Franche Comte, CNRS, Inst UTINAM, UMR 6213, F-25000 Besancon, Franche Comte, France

来源：

APPLIED SURFACE SCIENCE | 2015年 / 324卷

关键词：

Ni-W alloy; SiO2; nanoparticles; Zeta potential; Electrical conductivity; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; SURFACE; ALLOY; PARTICLES; TUNGSTEN; GROWTH; ENERGY; CARBON; WEAR;

D O I：

10.1016/j.apsusc.2014.10.142

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we study the effect of pH on morphology, composition and crystallographic orientation during pulse electroplating of Ni-W/SiO2 nanocomposite coating from citrate-ammonia media. SEM and AFM analysis shows that the nanocomposite coatings obtained with well dispersed SiO2 nanoparticles were smoother, more compact and with finer grain size. Furthermore, XPS, GDOES and XRD reveal a good crystalline structure with the detection of new intermetallic phases. The interface electrochemical behavior and stability of the studied coatings into 3% NaCl media were discussed in the consideration of electrical conductivity and microhardness. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：369 / 379

页数：11

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