【作者】 徐德生； 任露泉； 邱小明； 苗耀新；

【Author】 Xu Desheng Ren Luquan Qiu Xiaoming Miao Yaoxin (Jilin University)

【机构】 吉林大学南岭校区仿生技术教育部重点实验室； 吉林大学南岭校区材料学院；

【摘要】 本文采用高频钎焊方法在低碳钢表面制备了WC/Cu非光滑耐磨复合涂层,研究了WC含量、磨粒尺寸、载荷等对其耐磨性的影响,分析了非光滑涂层的磨损机理。结果表明,当WC含量在50%时非光滑涂层耐磨性最高,其耐磨性随载荷或磨粒尺寸增大而下降。磨粒磨损时WC颗粒在涂层表面凸起—形成非光滑表面可阻碍磨粒对基体的犁削并使部分磨粒由滑动变为滚动是访生非光滑复合涂层具有高耐磨粒磨损性能的主要原因。复合涂层与低碳钢基体界面为良好的冶金结合,界面区组织致密。更多还原

【Abstract】 In this paper, high frequency brazing was applied to build up the bionic unsmoothed composite coatings of WC/Cu--Base on the mild steel. The sizes of the abrasive particles and the load on the abrasive resistance was studied. And the wear mechanism of composite coatings was built up as well. The experimental results suggested that, the interface between composite coatings and the mild steel base was metallurgically bonded very well. During abrasion, WC particles protruded from the coatings to form unsmoothed surfaces which can not only protect the base metal from ploughed but also change the motion of partial abrasive particles from sliding to rolling. This is the main reason of the Bionic Unsmoothed Composite Coatings with high abrasive resistance. When the content of WC particles is 50%, the wear resistance of composite coatings comes up to its peak. But it was deteriorated with the increase of loads or abrasive particles.更多还原