高圧コールドスプレー矩形断面ノズルによるスプレーパターン平坦化したアルミニウム皮膜の特性

抄録

In cold spraying，a rectangular cross-sectional nozzle can produce a wider range of coatings than a circular cross-sectional nozzle，which is expected to improve the work efficiency. In previous studies，aluminum coatings were fabricated and relatively flat coating patterns were obtained. In this study，we verified whether there was any variation in the adhesion strength within the coating. A high-pressure cold spray apparatus was used for the experiment，and pure aluminum spherical powder was fed in the axial direction. After that，the adhesion strength at the center and edge of the coating was measured using a thin-coating adhesion strength measurement device，and the cross section and single particles of the coating were observed using a scanning electron microscope. As a result，it was confirmed that the adhesion strength was uniform between the center and the edge of the aluminum coating.