The results show deposit possesses good
density, high micro-hardness and low porosity; and the patterns
on the surface of spray mould can be duplicated exactly.
The wear resistance and the corrosion resistance of the
coating are greatly improved by employing spray mould
which finished by pulse electrochemical process. Therefore,
the fine pattern and the natural figure can be rapidly replicated
from the spray mould by arc spray forming.
It is important to establish internal relationships among
spray parameters, behaviors of atomizing particles, morphological
aspect of splat formation and coating generation by
examining droplets forming process during spraying. The results
are propitious to optimize the coating quality of arc
spray forming.