Abstract
Mg coatings prepared at different powder injection position and powder size by cold spraying were investigated as well as their microstructure, micro-hardness and adhesion strength between a magnesium coating and substrate. It is necessary to lengthen the heating section of the nozzle to raise the particle temperature at the time of the collision for coating formation of the Mg by the cold spray. In addition, it was not supposed a remarkable difference of adhesion strength and coating section hardness by the powder size.
