The MoO/AlO micro-arc oxidation composite coatings based on the AlSi10Mg selective laser-melted were studied to lay a foundation for its application in aerospace. The MO ion group diffused into the coatings and participated in the reaction, forming MoO compounds. The Mo content increased to 3.45 %, uniformly distributed across the surface and in-depth. The coatings mainly comprise γ-AlO, α-AlO, MoO, and MoO. The valence of Mo was Mo, Mo, and Mo in MoO, MoO and MoO, respectively. The average surface roughness increased from 0.729 μm to 2.784 μm. The corrosion current decreased from 1.122×10 A×cm to 2.774×10 A×cm. The micro-hardness of the coatings was improved from 536 HV to 925 HV. The corrosion products consist of Al (OH) and AlCl. The Cl content of the 4-week sample is close to that of the 1-week sample; the Cl content does not increase with the prolonged corrosion time, and MoO/AlO composite coatings excellently protect the substrate.

中文翻译：

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基于AlSi10Mg选区激光熔化MoOx/Al2O3微弧氧化涂层耐腐蚀性能研究


研究了基于AlSi10Mg选区激光熔化的MoO/Al2O微弧氧化复合涂层，为其在航空航天领域的应用奠定了基础。 MO离子基团扩散到涂层中并参与反应，形成MoO化合物。 Mo含量增加至3.45%，在表面和深处均匀分布。涂层主要成分为γ-Al2O、α-Al2O、MoO、MoO。 Mo的价态分别为MoO、MoO和MoO中的Mo、Mo和Mo。平均表面粗糙度从0.729μm增加到2.784μm。腐蚀电流从1.122×10 A×cm下降到2.774×10 A×cm。涂层的显微硬度从536 HV提高到925 HV。腐蚀产物由Al(OH)和AlCl组成。 4周样品的Cl含量与1周样品接近； Cl含量不随腐蚀时间的延长而增加，MoO/Al2O复合涂层对基体具有良好的保护作用。