ABSTRACT

In this research, the microstructure and optical behaviour of a novel Al₂O₃–Ag composite coating have been investigated. The composite films were synthesised by the addition of silver nanoparticles into the anodizing electrolyte solution with the concentration of 100–1500 mg per 600 mL. SEM, EDS, XRD and Raman tests were employed to study the microstructure of the coatings. The optical properties were also characterized by FTIR and UV-Vis experiments. The results showed that the average pore diameter was increased by the co-deposition of silver nanoparticles into the alumina matrix from about 11 to 41 nm. Furthermore, silver nanoparticles could improve the optical properties of the anodic film, whereas the composite coating showed the higher absorption and emission associated with the ratio of α/ϵ ∼ 1.

摘要

在本研究中，新型 Al ₂ O ₃的微观结构和光学行为-Ag复合涂层已经过研究。通过在阳极氧化电解液中加入浓度为 100-1500 mg/600 mL 的银纳米颗粒来合成复合膜。采用SEM、EDS、XRD和拉曼测试来研究涂层的微观结构。光学特性还通过 FTIR 和 UV-Vis 实验表征。结果表明，通过将银纳米颗粒共沉积到氧化铝基质中，平均孔径从约 11 nm 增加到 41 nm。此外，银纳米粒子可以改善阳极薄膜的光学性能，而复合涂层显示出与α / ϵ  ∼ 1比率相关的更高吸收和发射。