论文部分内容阅读
在Na_2SiO_3电解液体系下,对ZAISil2Cu2Mg1微弧氧化膜的形成进行研究,通过改变NaOH的含量,研究了其对电解液的电导率、微弧氧化的临界起弧电压、膜层特性及微观形貌的影响。并测定了氧化膜的相组成。结果表明:NaOH含量从1.0 g/L到3.0 g/L变化时,电解液的电导率由14.00 ms/cm几乎呈线性增大到26.28 ms/cm,正向临界起弧电压由360 V呈线性降低下降到290 V;含量从1.0 g/L增大到2.5 g/L时,膜厚从92μm迅速增加到125μm。含量超过2.5 g/L,膜厚减小,致密层所占比例下降。XRD分析表明:氧化膜层中主要由莫来石、SiO_2和α-Al_2O_3、y-A1_2O_3和WO_3相。
The formation of ZAISil2Cu2Mg1 micro-arc oxidation film was studied in Na_2SiO_3 electrolyte system. The conductivity of the electrolyte, the critical arc voltage of microarc oxidation, the film properties and the micro-morphology were studied by changing the NaOH content. Impact. The phase composition of the oxide film was measured. The results show that the conductivity of the electrolyte increases linearly from 14.00 ms / cm to 26.28 ms / cm with the NaOH content from 1.0 g / L to 3.0 g / L, and the critical critical arc voltage increases linearly from 360 V Decreased to 290 V; when the content increased from 1.0 g / L to 2.5 g / L, the film thickness increased rapidly from 92μm to 125μm. Content of more than 2.5 g / L, the film thickness decreases, the proportion of dense layer decreased. XRD analysis shows that the oxide film mainly consists of mullite, SiO 2 and α-Al 2 O 3, y-Al 2 O 3 and WO 3 phases.