铝及其合金阳极氧化击穿电压和耐受电压的测定

[中文适用范围]： 本文件规定了测定铝及其合金、平坦或接近平坦表面以及圆线上阳极氧化涂层击穿电压和耐受电压的试验方法。 该方法适用于主要用作电绝缘体的阳极氧化涂层。 该方法不适用于切割边缘、孔边缘或挤压形状等角度急剧变化附近的涂层。 注1：击穿电压和耐受电压受相对湿度的影响。 注 2：对于未密封的涂层，所描述的方法不能给出令人满意的结果，因为它们特别受湿度的影响。 [外文原描述]： This document specifies test methods for the determination of the breakdown voltage and withstand voltage of anodic oxidation coatings on aluminium and its alloys, on flat or near-flat surfaces and on round wire. The methods are applicable to anodic oxidation coatings used primarily as electrical insulators. The methods are not applicable to coatings in the vicinity of cut edges, the edges of holes, or sharp changes of angle on, for example, extruded shapes. NOTE 1 Breakdown voltage and withstand voltage are affected by relative humidity. NOTE 2 The methods described do not give satisfactory results for unsealed coatings because they are affected by the humidity in particular.