| 摘要: |
| 测量并分析了电解液中NaOH的质量密度、电源频率和反应时间对AZ91D镁合金微弧氧化过程中热损耗率、成膜速率和致密度的影响和作用机理。试验结果表明，在NaOH的质量浓度为2.0 g/L、频率为500 Hz、反应时间为20 min时，分别能使热损耗率降低到8.65%、5.34%、8.63%，且以上各参数值对应的膜层质量能达到最好。 |
| 关键词: 微弧氧化 镁合金 热损耗率 成膜速率 致密度 |
| DOI： |
| 分类号: |
| 基金项目:甘肃省重大科技专项（0702GKDA024） |
|
| Factors Influencing Heat Wastage Efficiency and Film Quality of Micro-arc Oxidation on AZ91D Magnesium Alloy |
|
FAN Kang–le, YAN Feng–yun, WANG Cai–dong, HUANG–Wang
|
|
a. State Key Laboratory of Gansu Advanced Non–errous Metal Materials b. Key Laboratory of Non–ferrous Metal Alloys and Processing, the Ministry of Education, Lanzhou University of Technology, Lanzhou 730050
|
| Abstract: |
| The factors and mechanisms influencing heat wastage efficiency, the rate of ceramic coatings formation and density of micro–arc oxidation on AZ91D magnesium alloys were studied by measuring and analyzing treatment at different NaOH concentration, power supply frequcy and treatment time. The experimental results show that the heat wastage efficiency can be decreased to 8.65%, 5.34%, 8.63%. When the NaOH concentration is 2.0 g/L, the power supply frequcy is 500 Hz, and the treatment time is 20 min, it also can get the best film with the parameters above. |
| Key words: micro-arc oxidation magnesium alloy heat wastage efficiency the rate of ceramic coatings formation density |
