摘要
铝合金硬质阳极氧化工艺由于在高电流密度时零件易于被烧毁 ,采用在不同波形电源所产生的高电流密度下进行铝合金硬质阳极氧化。根据美军标MIL -A -86 2 5F及麦道公司标准DPS11 0 2评价铝合金阳极化膜的各项性能 ,研究了基体材料及施加电流密度对膜厚、成膜时间、耐磨性和烧毁率的影响。结果表明 :在交直流叠加电源所产生的高电流密度下可得到质量较好的铝合金阳极化膜。
Workpieces are susceptible to overburning at high current densities in hard anodic oxidation of aluminum alloys. Hard anodic oxidation of aluminum alloys was processed at high current densities with different wave shape. Properties of aluminum oxidation film were evaluated according to standards of MIL-A-8625 and DPS11.01, and effects of aluminum substrate and imposed current densities on film thickness, film-forming time, wear resistance and overburning rate were studied. The results show that aluminum oxidation films obtained at high current densities with alternate current superimposed on direct current have better properties that those at current densities with different wave shape.
出处
《电镀与涂饰》
CAS
CSCD
2000年第2期13-15,23,共4页
Electroplating & Finishing
关键词
铝合金
硬质阳极氧化
高电流密度
电镀
aluminum alloy
hard anodic oxidation
high current density
