The Adhering Formation of Argon-atomized FGH95 and Imported Rene'95 Superalloy Powders

Particle shape,surface morphology and microstructure of skin layers and adhering satellites were studied by using optical and scanning electron microscopy.It was observed that as the powder size decreases, the frequency of occurrence of both satellites and skin layers diminish and the shape of powder approaches that of a sphere.There are two kinds of microstructure on adhering locations,i.e. one is with marked boundary and the other is without boundary.