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The fretting behavior of Zn-Al-Mg-RE coating prepared by high velocity arc spraying was studied for the first time in this paper.All specimens were fretted in air and 3.5%NaCl solution independently.The worn surfaces of the coating were investigated by scanning electron microscopy and X-ray energy dispersive spectroscopy.Fretting tests have shown that friction coefficient in 3.5%NaCl solution was similar to dry condition for Zn-Al-Mg-RE coating.Study of worn surfaces revealed the main mechanism in dry friction was the oxidative wear;while in 3.5%NaCl solution,the main mechanisms were delamination process and abrasive wear.
The fretting behavior of Zn-Al-Mg-RE coating prepared by high velocity arc spraying was studied for the first time in this paper. Allied were fretted in air and 3.5% NaCl solution independently. The worn surfaces of the coating were investigated by scanning electron microscopy and X-ray energy dispersive spectroscopy. Pleating tests have shown that friction coefficient in 3.5% NaCl solution was similar to dry condition for Zn-Al-Mg-RE coating. Study of worn surfaces revealed the main mechanism in dry friction was the oxidative wear; while in 3.5% NaCl solution, the main mechanisms were delamination process and abrasive wear.