Abstract Novel Ag wires reinforced composite coating is developed using a novel active screen plasma co-alloying process in the plasma ambient of methane and hydrogen, and silver wires were in-situ formed through a sputtering process. Scanning electron microscopy and transmission electron microscopy were applied to investigate the microstructures of the Ag wires and the composite coatings. It revealed that the Ag wires were randomly embedded in the composite coating which were formed by aggregated nano-Ag, whilst the composite coating was formed with silver, stainless steel and carbon. X-ray diffraction and X-ray photoelectron spectroscopy (XPS) were utilised to characterise the phases and chemical states of the composite coatings, which verified the metallic form of Ag and non-chemical bond between deposited metals and carbon. A vapor-solid mechanism was applied to explain the growth of the Ag wires during the duplex deposition. Excellent bactericidal effects of the composite coatings against both Gram-negative P. gingivalis and Gram-positive S. epidermidis bacteria were acquired through contacting with coated metallic samples.

中文翻译：

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新型银丝增强碳基复合涂层的合成及体外抗菌性能

摘要 在甲烷和氢气的等离子体环境中，采用新型活性屏等离子体共合金工艺开发了新型银丝增强复合涂层，并通过溅射工艺原位形成银丝。应用扫描电子显微镜和透射电子显微镜研究银线和复合涂层的微观结构。结果表明，Ag线随机嵌入纳米Ag聚集形成的复合涂层中，而复合涂层由银、不锈钢和碳形成。X射线衍射和X射线光电子能谱（XPS）用于表征复合涂层的相和化学状态，验证了Ag的金属形式以及沉积金属与碳之间的非化学键。应用气固机制来解释双相沉积过程中银线的生长。通过与涂层金属样品接触，复合涂层对革兰氏阴性牙龈卟啉单胞菌和革兰氏阳性表皮葡萄球菌具有优异的杀菌效果。