Electrodeposition and Mechanical Characterization of Ni/SiC Composite Coatings

Автор(ы) L. Ghelani1, 2 , M. Naoun2, 3 , L. Aissani1, A. Abbassi2, S. Boulahrouz1

1Department of Mechanic, University Abbas Laghrour, 40000 Khenchela, Algeria

2Laboratory of Corrosion, Department of Mechanic, University Mostefa Ben Boulaïd, Batna 2, 05000, Algeria

3Department of Mechanic, University Mostafa Ben Boulaïd, Batna 2, 05000, Algeria

Е-mail ghilanilaala@yahoo.fr
Выпуск Том 11, Год 2019, Номер 3
Даты Получено 05 февраля 2019; в отредактированной форме 10 июня 2019; опубликовано online 25 июня 2019
Ссылка L. Ghelani, M. Naoun, L. Aissani, et al., J. Nano- Electron. Phys. 11 No 3, 03016 (2019)
DOI https://doi.org/10.21272/jnep.11(3).03016
PACS Number(s) 68.37 – d, 68.37 – Ps, 81.65 – b, 81.65 – Cf
Ключевые слова Electroplating (2) , Co-deposition, SiC (20) , Weight loss, Polarization (6) .

The need to improve coatings for better properties leads to the development of composite electrolytic deposition, by adding insoluble solid particles to the electrolyte. These coatings typically contain ceramic particles in an electrodeposited matrix such as nickel. The aim of this work is to obtain an electrolytic nickel matrix (binder) with and without adding silicon carbide SiC microparticles (mean diameter 0.8 m) which have a high hardness and a good chemical stability. The structural (Ni-SiC) composite and pure nickel coatings were prepared by electroplating deposition on steel in a Watts bath of electroplating chloride. The surface morphology, microstructure, and composition were studied by atomic force microscopy (AFM), nanoindentation, scanning electron microscopy (SEM) and X-ray diffractometer. The characterizations of the deposited layers are carried out in 3.5 % NaCl solution. The weight loss and the polarization results highlighted that the corrosion rate decreases with the increase of SiC concentration up to 15 gl – 1. This decrease is probably due to the presence of SiC particles leading to improved corrosion resistance. These properties are mainly due to the homogeneous distribution of the constituents SiC as determined by AFM technique and the possibilities of combining the characteristics of base metals and their coatings. Moreover, the incorporation of the microparticles had a significant impact on the microhardness of the composite deposits Ni-SiC.

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