摘要
对微弧氧化起弧前不同能量输出模式下的AZ31镁合金试样进行了电性能测试、能谱和扫描电镜分析,测定了不同能量输出模式下微弧氧化起弧的能耗及最小能耗模式下起弧临界条件。结果表明:固定脉数时,起弧时间随脉宽的增大而缩短,起弧能量在脉宽为30μs时最小;固定脉宽时,起弧时间随脉数的增加而缩短,起弧能量在脉数为1 650时最小。当脉宽为30μs,脉数为1 650,峰值电流密度为50A/dm2时,起弧能耗最小,为2.4kJ。
Electrical performance test, energy spectrum and scanning electron microscope analysis were made for AZ31 magnesium alloy samples which had been micro-arc oxidized before arcing under different energy output modes, and the arc-striking energy consumption for arcing of micro-arc oxidation under different energy output modes and the critical conditions for arcing of micro-arc oxidation under minimum energy consumption mode were determined. Results showed that the arc-striking time decrease with the increasing of pulse width when pulse number constant, the arc-striking energy is minimum at 30μs. Similarly, the arc-striking time decreases with the increasing of pulse number when pulse width constant, the arc-striking energy is minimum at 1 650. Under the conditions of pulse width 30μs, pulse number 1 650, peak current density 50 A/dm^2 , the arc-striking energy is lowest, of about 2.4 kJ.
出处
《电镀与环保》
CAS
CSCD
北大核心
2015年第6期38-41,共4页
Electroplating & Pollution Control
关键词
微弧氧化
起弧时间
起弧能量
micro-arc oxidation
arc-striking time
arc-striking energy
