Deposition characteristics of copper particles on roughened substrates through kinetic spraying

In this paper, a systematic study of copper particle deposition behavior on polished and roughened surfaces (aluminum and copper) in kinetic spray process has been performed. The particle deformation behavior was simulated through finite element analysis (FEA) software ABAQUS explicit 6.7–2. The particle–substrate contact time, contact temperature and contact area upon impact have been estimated for smooth and three different roughened substrate cases. Copper powders were deposited on smooth and grit-blasted copper and aluminium substrates and characterized through scanning electron microscopy and Romulus bond strength analyzer. The results indicate that the deformation and the resultant bonding were higher for the roughened substrates than that of smooth. The characteristic factors for bonding are reported and discussed. Thus the substrate roughness appears to be beneficial for the initial deposition efficiency of the kinetic spray process.

[1]  Correlation between surface roughness of plasma-sprayed chromium oxide coatings and powder grain size distribution: a fractal approach , 2004 .

[2]  G. S. Sekhon,et al.  Experimental and numerical studies on the behavior of thin aluminum plates subjected to impact by blunt- and hemispherical-nosed projectiles , 2006 .

[3]  L. Ajdelsztajn,et al.  Substrate roughness and thickness effects on cold spray nanocrystalline Al−Mg coatings , 2006 .

[4]  Hamid Assadi,et al.  Bonding mechanism in cold gas spraying , 2003 .

[5]  S. Amico,et al.  The effect of roughness and pre-heating of the substrate on the morphology of aluminium coatings deposited by thermal spraying , 2006 .

[6]  Changhee Lee,et al.  Fabrication of automotive heat exchanger using kinetic spraying process , 2007 .

[7]  Andrew G. Glen,et al.  APPL , 2001 .

[8]  F. Gärtner,et al.  Recent Developments and Potential Applications of Cold Spraying , 2006 .

[9]  Chang-jiu Li,et al.  Influence of substrate roughness on the bonding mechanisms of high velocity oxy-fuel sprayed coatings , 2005 .

[10]  Roger H. Rangel,et al.  Modeling of molten droplet impingement on a non-flat surface , 1995 .

[11]  H. Liao,et al.  On high velocity impact of micro-sized metallic particles in cold spraying , 2006 .

[12]  H. Fang,et al.  The rebound phenomenon in kinetic spraying deposition , 2006 .

[13]  H. Fang,et al.  The bond strength of Al-Si coating on mild steel by kinetic spraying deposition , 2006 .

[14]  E. Çeli̇k,et al.  Effect of grit blasting of substrate on the corrosion behaviour of plasma-sprayed Al2O3 coatings , 1999 .

[15]  E. Yamaguchi,et al.  Effect of Substrate Temperature on Deposition Behavior of Copper Particles on Substrate Surfaces in the Cold Spray Process , 2007 .

[16]  Mica Grujicic,et al.  Computational analysis of the interfacial bonding between feed-powder particles and the substrate in the cold-gas dynamic-spray process , 2003 .