利用微等离子体氧化技术,在7075铝合金表面原位生成了陶瓷层。采用正交实验法确定了在硼酸盐体系中进行微等离子体氧化的最佳电解液配方,通过SEM 及XRD分析了陶瓷层的形貌及相组成。结果表明:陶瓷层硬度可达到812HV0.1;陶瓷层表面形貌均匀,膜层致密,主要由γ-Al2O3 组成。

Applying the technology of micro plasma oxide to form ceramic layer in situ on aluminum alloy7075.The optimum electrolyte recipe of micro plasma oxidation on aluminum alloy 7075 in borate system was optimized by orthogonal experiment, the morphology and the phase composition of the ceramic layer were analyzed by SEM and XRD.Results show that the hardness of ceramic layer reaches 812HV0.1; The surface morphology of ceramic layer is homogenous, ceramic layer is composed of γ-Al2O3 primarily and it is very compact.