| Issue |
MATEC Web of Conferences
Volume 30, 2015
2015 the 4th International Conference on Material Science and Engineering Technology (ICMSET 2015)
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 4 | |
| Section | Advanced materials and properties | |
| DOI | https://doi.org/10.1051/matecconf/20153001005 | |
| Published online | 04 November 2015 | |
Effect of Silicon Nitride Incorporation on Microstructure and Hardness of Ni-Co Metal Matrix Nanocomposite
1 Department of Chemical Engineering, Lhokseumawe State Polytechnic, P. Box 90, Lhokseumawe, Aceh, 24301, Indonesia
2 Department of Mechanical Engineering, Lhokseumawe State Polytechnic, P. Box 90, Lhokseumawe, Aceh, 24301, Indonesia
a ridwan.kimia@yahoo.com
b yusrinimarita@yahoo.com
c nurdinhasan@gmail.com
Ni-Co-Si3N4 nanocomposite coatings were prepared by electrodeposition technique. The deposition was performed at 50 mA cm-2 on copper substrate. The working temperature of electrodepostion was constant at 500C in an acidic environment of pH 4. The effects of silicon in the nickel-cobalt metal matrix composite were investigated. Energy dispersive X-ray spectroscopy was used to determine the composition. The Co content in the coatings is in the range 27-49 at.%. The phase present in the Ni-Co-Si3N4 were examined with an X-ray diffraction analysis. All the reflection patterns indicate that the coatings are having face-centered cubic (fcc) structure. The microhardness of the Ni-Co-Si3N4 nanocomposite coating increases with increasing silicon content. The microhardness of the Ni-Co-Si3N4 nanocomposite coating increased from 549 HV for Nickel-cobalt alloy coating to 641 HV for Ni-Co-Si3N4 nanocomposite coating with 5.47 at.% Si.
© Owned by the authors, published by EDP Sciences, 2015
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