The characteristics of the oxide layer deposited by microarc oxidation (MAO) on Al – Si alloys in a silicate-alkaline electrolyte are studied. The thermal conductivity of the layer at 50 – 120°C is determined using a special facility by the method of stationary heat flow. The thickness, the porosity, the elemental composition, the content of the amorphous phase, and the size of the crystallites in the oxide layer are determined. The results obtained are analyzed and the conditions for the lowest thermal conductivity of the oxide layer are determined.

中文翻译：

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AK12D Al-Si合金微弧氧化形成的氧化物层的结构和热物性。

研究了微弧氧化（MAO）在硅酸盐-碱性电解质中的Al-Si合金上沉积的氧化层的特性。在50 – 120°C的温度下，该层的热导率是使用特殊设备通过固定热流方法确定的。确定厚度，孔隙率，元素组成，非晶相的含量以及氧化物层中的微晶的尺寸。对获得的结果进行分析，并确定氧化物层的最低导热率的条件。