摘要
采用在微弧氧化溶液中添加石墨烯的方法在镁合金表面制备一层微弧氧化层,用扫描电镜(SEM)、能谱仪(EDS)和四探针电阻测试仪对微弧氧化层的表面形貌、组成成分及导电性能进行分析测试。结果表明:添加石墨烯后微弧氧化层表面的孔洞数量明显增加,且均匀分布在整个表面,但孔洞的尺寸大大缩小;石墨烯在微弧氧化层孔洞中的含量明显高于致密部位;虽然镁合金微弧氧化层中局部的石墨烯原子数分数达到30%以上,但氧化层的导电性没有发生明显改变。
The micro-arc oxidation coating on magnesium alloy was prepared by adding graphene to the micro-arc oxidation solution, and the surface performances were investigated using scanning electron microscopy, energy dispersive spectrometer and four-probe resistance tester. The results indicate that the number of holes on the surface of microarc oxidation layer increases significantly with the graphene adding. The holes distribute uniformly on the surface, and the size of the poles greatly reduces. The content of graphene in the holes of micro-arc oxidation layer is obviously higher than that in dense parts. Although the content of graphene in some part of micro-arc oxidation layer is more than 30%（atomic fraction）, the electrical conductivity of the layer has no obvious change.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2017年第3期59-62,共4页
Ordnance Material Science and Engineering
基金
宁波市自然科学基金资助项目(2014A610052)
关键词
石墨烯
镁合金
微弧氧化层
结构
导电性
graphene
magnesium alloy
micro-arc oxidation layer
structure
electrical conductivity
