中文摘要：

利用球盘式试验机研究了高能喷丸、喷丸抛光及原始样品在干摩擦和油润渭条件下的摩擦磨损行为．结果表明：高能喷丸使Q235钢表面纳米化的同时在表面产生大量凹坑，干摩擦下高能喷丸及其抛光样品的磨损量均大于原始样品；由于表面凹坑的储油作用，在液体石蜡润滑下高能喷丸样品的磨损量小于原始样品，3种样品的摩擦系数均接近0．1；当液体石蜡中加入ZDDP后，由于纳米化表面的活性高，高能喷丸样品的耐磨性提高幅度更为显著，在35N载荷下是原始样品的1．63倍，是喷丸抛光样品的1．26倍．

英文摘要：

By means of high energy peening （HEP） , nanocrystallization surface was prepared on the Q235 steel. The friction and wear behaviors of HEP, polished HEP and original samples in dry or lubricating sliding were investigated by a pin-on- disc tester. The results showed that nanocrystallization surface was generated and many pits were formed. The wear loss of HEP samples with / without polishing are both higher than that of original one in dry sliding. In liquid paraffin （ LP）, the wear loss of HEP sample became lower for the pits in favor of keeping lubricant oil, and the frictional coefficients of the three samples were all close to 0.1. With the high chemical activity of nanocrystallization surface, the wear resistance of HEP samples with / without polishing got a remarkable increase than that of original one when ZDDP was added into LP. The wear resistance of HEP sample at the load of 35N was 1.63 and 1.26 times as that of original and polished samples.