Materials Engineering, University of Technology, Baghdad, Iraq


In this investigation, Zn-Al alloy metal-matrix nano composites that
reinforced via various weight percentages (2%, 4%, 6%, and 8%) of
nanosilica (SiO2) particles were fabricated applying the technique of stir
casting. Behaviors of the corrosion of the unreinforced alloy and
reinforced composites were measured utilizing a potentiostat test in a (3.5
wt.% NaCl) salt solution. The optical microscopy was employed to
investigate the surface microstructure of the composite. Microstructure
analysis manifested that the uniform distributions of the reinforcing
particles in the composites are alike, consisting of a dendritic structure of
the zinc alloy matrix with an excellent reinforcing particles steady
dispersion. The improved results of the corrosion resistance for the metal
matrix composites showed an excellent resistance to corrosion than the
matrix in the (3.5 wt.% NaCl) solution. Raising the weight percentage of
the reinforcement particulates of nansilica (SiO2) reduced the composites
rate of corrosion


[1] M. Babic, S. Mitrovic, and R. Ninkovic, “Tribological potential of zinc-aluminum alloys improvement,” Tribology in industry, Vol. 31, No. 1 & 2, 2009. [2] W. K. Meyers, “Zinc-Aluminum alloys as tribomaterials,” Journal Metals, Vol. 22, No. 4, pp. 259, 2003.
[3] S. C. Krishna, and M. Bhattacharyya, “Dry sliding wear behavior of reinforced ZA-27 alloy based metal matrix composites,” International Journal of Modern Physics B, Vol. 20, Issue 25-27, pp. 4703-4708, 2006.
[4] Y. H. Zhu, “Microstructure dependence of damping behavior of eutectoid Zn–Al-based alloy (ZA-27),” J. Mater. Sci. Tech., Vol. 15, No.2, 1999.
[5] W. K. Krajewski, “Shaping surface wear properties of the Zn-Al based MMCS,” Metallurgia Italiana, pp. 27-30, 2006.
[6] M. Kaplan, M. Ileriturk, and Z. Balaban, “Relationship between microstructure, hardness, XRD and wear performance of cast ZA alloy,” Materials and Manufacturing Processes, pp. 400-406, 2008.
[7] K. H. W. Seah, S. C. Sharma, and B. M. Girish, “Effect of artificial ageing on the hardness of cast ZA-27/graphite particulate composites,” Materials and Design, Vol. 16, No. 6, pp. 337-341, 1995.
[8] M. Babic, S. Mitrovic, and R. Ninkovic, “Tribological potential of zinc-aluminum alloys improvement,” Tribology in industry, Vol. 31, No. 1-2, pp. 15-28, 2009.
[9] G. Ranganath, S. C. Sharma, M. Krishna, and M. S. Muruli, “A study of mechanical properties and fractography of ZA-27/Titanium-dioxide metal matrix composites,” Journal of Materials Engineering and Performance, JMEPEG, Vol. 11, No. 4, pp. 408-413, 2002.
[10] B. K. Prasad, “Tensile properties of some zinc-based alloys comprising 27.5% Al: effects of alloy microstructure, composition and test conditions,” Materials Science and Engineering: A, Vol. 245, No. 2, pp. 257-266, 1998.
[11] ASM Handbook, “Casting,” Vol. 15, 1988.
[12] A. H. Fadhil, J. A. Niveen and F. H. Kateralnada, “Fabrication and wear properties of ZA-27 alloy matrix hybrid composite reinforced with nanoparticles,” AL-Qadisiyah Journal for Engineering Sciences” Vol. 11, No. 4, 2018.
[13] A. H. Fadhil, J. A. Niveen and S. J. Nibras, “Corrosion behavior of recycling Al- alloy based metal matrix composites reinforced by nano particles,” Kurdistan Journal of Applied Research (KJAR), Print-ISSN: 2411-7684 – Electronic-ISSN: 2411-7706 |, Vol. 2, Issue 3, August 2017