摘要
利用微弧氧化技术在以硅酸钠为主要溶质,配以辅助添加剂Na2WO4、KOH、Na2EDTA的电解液中,在LY12铝合金表面原位生长陶瓷层。用WTM-1E型球-盘磨损实验机对试样的摩擦学性能进行了研究,并用SEM、XRD分析了微弧氧化陶瓷层的表面形貌和相结构。结果表明:铝合金在电流密度10 A/dm2,电解液温度40～60℃,处理时间10～60 min条件下,可以原位形成均匀致密的表面陶瓷改性层。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。
The oxidation ceramic coating was prepared on LY12 aluminium alloy by microarc oxidation taking Na2SiO3,Na2WO4,KOH,Na2EDTA as electrolysis solution. The tribological property of the micro-arc oxidation ceramic coating under dry sliding was studied by WTM-IE ball-on-disc test fig. Using the SEM and XRD, the phase structure and surface morphology of the micro-arc oxidation ceramic coating was analyzed. The results show that a dense ceramic modification coating is prepared on the surface of the LY12 aluminium alloy by microarc oxidation in the process condition of the current density 10A/dm^2,the electrolysis solution temperature 40-60 ℃ and the treatment time 10-60 min. The alloy after micro-are oxidation treatment has the excellent abrasion resistance under dry sliding.
出处
《热加工工艺》
CSCD
北大核心
2006年第24期40-42,共3页
Hot Working Technology
基金
北京市教委科技发展计划项目(KM200510017005)
印刷包装材料与技术北京市重点实验室开放课题(KF050203)
关键词
铝合金
微弧氧化
表面形貌
摩擦学性能
aluminium alloy
microarc oxidation
surface morphology
tribological property
