抄録
The authors investigated the microstructure and phase about the self-fluxed alloy sprayed coating re-melted by fusing treatment, and compared the microstructure, precipitates and mechanical properties of self-fluxed alloy sprayed coating re-melted by high-frequency induction heating with those by gas-torch flame used. The results obtained are as follows.(1)The particle in the self-fluxed alloy sprayed coating re-melted was Ni solid solution. The matrix in the self-fluxed alloy sprayed coating re-melted was the eutectic structure consisted of Ni phase and Ni3B phase, and the matrix became hard because of the precipitation of Ni3B phase.(2)It was clear that the microstructure and mechanical properties of self-fluxed alloy sprayed coating re-melted by highfrequency induction heating were the same as those by gas-torch flame. So it was judged that the fusing treatment by high frequency induction heating was valid.
