It is found that the ablated surface morphologies for both the ti samples of different roughness have a similar change trend from roughening to smoothing with increasing the shot number , where the surface roughening is relatively weaker at lower ion current density 通過輻照不同原始粗糙度的純金屬ti發(fā)現(xiàn),隨著輻照次數(shù)的增加,燒蝕表面形貌均發(fā)生表面粗糙化向光滑化的轉(zhuǎn)變。離子束流密度較低時(shí),輻照表面的粗糙化程度較弱。