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http://dx.doi.org/10.11629/jpaar.2014.10.4.177

Fabrication and Oxidation Behaviors of Nickel-coated Aluminum Powders for Energetic Applications  

Kim, Kyung Tae (Korea Institute of Materials Science)
Woo, Jae Yeol (Korea Institute of Materials Science)
Yu, Ji Hun (Korea Institute of Materials Science)
Lee, Hye Moon (Korea Institute of Materials Science)
Lim, Tae Soo (Korea Institute of Materials Science)
Choi, Yoon Jeong (Agency for Defense Developmen)
Kim, Chang Kee (Agency for Defense Developmen)
Publication Information
Particle and aerosol research / v.10, no.4, 2014 , pp. 177-182 More about this Journal
Abstract
In this study, nickel-coated aluminum (Ni/Al) powders were synthesized for the utilization of energetic applications. Oxide materials present at the surface of Al powders of $45{\mu}m$ in averaged size were removed by using sodium hydroxide(NaOH) solution which is used for controlling pH. Nickel material is coated into the surface of oxide-removed Al powders by electroless-plating process. The microstructure of fabricated Ni/Al powders shows that nickel layers with a few hundreds nm were very homogeneously formed onto the surface of Al powders. The oxidation behavior of Ni/Al exihibit somewhat faster oxidation rate than that of pure Al with surface oxidation. Also, the higher exothermic reaction was observed from the Ni/Al powders. From the result of this, nickel coating is very promising method to obtain highly reactive and safe Al powders for energetic applications.
Keywords
Energetic application; Ni-coated Al powder; Electroless-plating; Oxidation behavior;
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