镁合金微弧氧化处理电压对陶瓷层的影响

研究了微弧氧化处理中起始电压U始、终止电压U终对陶瓷层的影响,发现电压是决定微弧氧化陶瓷层生长厚度及表面粗糙度的关键.结果表明:当起始电压U始相等时,终止电压U终(或△U)愈高,陶瓷层厚度愈厚;当终止电压U终相等时,起始电压U始愈高,陶瓷层厚度也愈厚.试样的表面粗糙度随微弧氧化处理终止电压U终的升高而增加,与U始变化的关系不明显.

Influences of Mg Alloy Micro-arc Oxidization Voltage on Ceramic Layer

In this test the influences of the beginning and finishing voltage on ceramic layer in magnesium alloy micro-arc oxidization are studied. It shows that the voltage would decide the thickness and surface roughness of the ceramic layer. When the beginning voltages are equal, the thickness of ceramic layer would increase with the finishing voltage; when the finishing voltages are equal, the thickness of ceramic layer would increase with the beginning voltage. The surface roughness would increase with finishing voltage. It doesn't show a clear relation between the roughness and the beginning voltage.