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Comprehensive Modelling Of The Cold Spray Process - From The Heating And Acceleration Of The Particle In The Nozzle To Its Impact On The Substrate

  • : Karl-Heinz Leitz1, Arno Plankensteiner1, Michael O'Sullivan1, Heinrich Kestler1, Lorenz Sigl1
  • : 1Plansee SE
  • : PDF Download
  • : 2017

Abstract

Cold spraying is a promising approach for the coating fabrication and the additive manufacturing from various materials and material systems. A powder is accelerated and heated in the gas flow of a supersonic nozzle to velocities that are sufficient to obtain cohesion of the particles to a substrate due to plastic deformation. As the temperature of the deposited material generally stays below melting temperature, thermal influence of coating and substrate is minimized. In this contribution simulation models for particle heating and acceleration in the cold spray nozzle as well as for the impact of the particle on the substrate based on CFDEM®coupling and ABAQUS® are presented. Based on the simulation models cold spraying of copper and molybdenum powder is analyzed and the simulation results are validated based on experimental data.

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