Biocompatible Porous Coating by Under-Critical Cold Spray

Wednesday, May 13, 2015: 11:35 AM
Room 104B (Long Beach Convention and Entertainment Center)
Mrs. Atieh Moridi , Politecnico di Milano, Milano, Italy
Dr. Seyyed Mostafa Hassani-Gangaraj , Massachusetts Institute of Technology, Cambridge, MA
Prof. Hamid Assadi , Helmut Schmidt University, University of the Federal Armed Forces Hamburg, Hamburg, Germany
Mr. Frank Gartner , Helmut Schmidt University, University of the Federal Armed Forces Hamburg, Hamburg, Germany
Prof. T. Klassen , Helmut Schmidt University, University of the Federal Armed Forces Hamburg, Hamburg, Germany
Prof. Mario Guagliano , Politecnico di Milano, Milano, Italy
Cold spray is explored as a potential method to produce Ti6Al4V porous coatings for load bearing implant applications. Experiments were carried out at ‘under-critical’ impact conditions, using rather coarse powders and fast gun traverse speeds. The effect of substrate material and spray parameters on the strength and porosity of the coating is investigated. Thick, macro rough coating with high porosity up to about 30% was successfully deposited using rather low temperatures. Fast gun traverse speed caused a uniform distribution of porosity over thickness. The side effect of under-critical deposition was minimized using coarse powders. As a result, a cohesion strength of above 100 MPa was achieved.
See more of: ITSC Young Professionals Session
See more of: Young Professionals Session and Oerlikon Metco Young Professionals Award