Mechanical and Dielectric Properties of Ni/Al2O3 Composite Coatings Prepared by the Axial Plasma Spraying
Source abstract
Abstract
以轴向送粉等离子喷涂法制备了Ni/Al 2 O 3 陶瓷涂层, 分析了Ni含量变化对涂层材料的显微结构、力学性能及微波介电性能的影响. 结果表明, 随着Ni含量增加, 涂层中Ni粒子的分布逐渐由孤立向部分桥连方式转变; 陶瓷涂层的相对密度、抗弯强度呈下降趋势, 这主要是由于在陶瓷涂层中Ni与Al 2 O 3 不润湿, Ni与Al 2 O 3 热膨胀系数不匹配从而形成空隙引起的. 涂层断裂韧性随Ni含量的增加而升高, 则是由于材料中Ni粒子发生了延展变形和引起裂纹转向. 复介电常数性能测试结果表明, 在8.2~12.4GHz 微波频率范围内, 陶瓷涂层复介电常数的实部值随Ni粒子含量的增加先逐渐上升后逐渐下降, 复介电常数的虚部上升. 这与Ni粒子形成的桥连结构有关.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Copper Interconnects and Reliability · High-Temperature Coating Behaviors · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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