【作者】 陈飞； 周海； 陈晨； 夏阳建；

【Author】 CHEN Fei~(1,2) ZHOU Hai~1 CHEN Chen~1 XlA Yang-jian~1 (1.College of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China; 2.School of Materials Science and Engineering,University of Science and Technology,Beijing 100083,China)

【机构】 北京石油化工学院机械工程学院；

【摘要】 利用微弧氧化技术在 LY12铝合金表面原位生长陶瓷层,实验中电解液由5g/LNaOH、10g/LNaSiO₃ 和5g/L（NaPO₃）₆组成,并加入适量催化剂 KOH 和十二烷基苯磺酸钠．用 SEM、XRD 分析了微弧氧化陶瓷层的表面形貌和相结构,利用 WTM-1型球-盘磨损实验机对铝合金表面陶瓷层的耐磨性能进行了研究．结果表明：铝合金在电流密度7A/dm²、电解液的温度20～40℃、处理时间20min 条件下,铝合金表面可以原位形成均匀致密的陶瓷改性层．微弧氧化处理后的试样在干摩擦小滑动距离下表现出良好的耐磨性能．更多还原

【Abstract】 A ceramic oxide ceramic coating was prepared on a LY12 aluminium alloy by microarc oxidation in a 5g/L NaOH-10g/L NaSiO₃-5g/L（NaPO₃）₆ electrolytic solution.Using the SEM and XRD,the phase structure and morphology of the micro-arc oxidation ceramic coating were analyzed.The anti-wear behavior of the micro-arc oxidation ceramic coating under dry sliding against GCr15 steel was evaluated on a ball-on-disc test rig.The results show that a dense ceramic oxide ceramic coating was prepared on the surface of the LY12 aluminium alloy by microarc oxidation in the process condition of the current density 7A/dm²,the electrolytic solution temperature 20-40℃ and the treatment time 20min.The original aluminium alloy was characterized by adhesion wear and scuffing under dry sliding against the steel, while the surface micro-arc oxidation ceramic coating experienced much abated adhesion wear and scuffing under the same testing condition.更多还原