S. Costil, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China; H. Li, University of Technology Belfort-Montbeliard, Belfort cedex, France; S. Deng, University of Technology Belfort - Montbeliard, Belfort Cedex, France; K. Richardt, Surface Engineering Institute, RWTH Aachen University, Aachen, Germany; C. Coddet, University of Technology Belfort-Montbeliard, Belfort Cedex, France; E. Lugscheider, Surface Engineering Institute (IOT), RWTH Aachen University, Aachen, Germany; H. Liao, LERMPS-UTBM, Belfort, France
Being the 8th most abundant element on the earth, magnesium and its alloys become very promising in numerous industrial applications because of some of their distinguished properties, including high thermal conductivity, high strength/weight ratio, good machinability etc. However, some inferior properties especially the poor wear and corrosion resistance have obstructed a widespread. As one of the most effective solutions, thermal spraying can deposit an adequate protective coating on the substrate. But the necessary grit-blasting operation before spraying leads to high grit-residues on the magnesium surface degrading also the deposit performance significantly. The PROTAL® process, combining a laser surface preparation to the deposition stage, can avoid this kind of disadvantages. This paper presents a possibility of employing PROTAL® to prepare a resistant Ni-Cr coating on a magnesium substrate. The coating adhesion and interface microstructure were especially investigated.
Summary: This paper presents a possibility of employing PROTAL® to prepare a resistant Ni-Cr coating on a magnesium substrate. The coating adhesion and interface microstructure were especially investigated.
