Nanocomposite tribological coatings with 'chameleon' surface adaptation
| Autor: | Andrey A. Voevodin, Jianjun Hu, T.A Fitz, Jeffrey S. Zabinski |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Nanocomposite
Materials science Energy-dispersive X-ray spectroscopy Surfaces and Interfaces Sputter deposition engineering.material Condensed Matter Physics Surfaces Coatings and Films Coating X-ray photoelectron spectroscopy Sputtering engineering Thin film Composite material Yttria-stabilized zirconia |
| Zdroj: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 20:1434-1444 |
| ISSN: | 1520-8559 0734-2101 |
| Popis: | Nanocomposite tribological coatings were designed to respond to changing environmental conditions by self-adjustment of their surface properties to maintain good tribological performance in any environment. These smart coatings have been dubbed “chameleon” because, analogous to a chameleon changing its skin color to avoid predators, the coating changes its “skin” chemistry and structure to avoid wear. The concept was originally developed using WC, diamondlike carbon, and WS2 material combination for adaptation to a humid/dry environment cycling. In order to address temperature variation, nanocomposite coatings made of yttria-stabilized zirconia (YSZ) in a gold matrix were developed with encapsulated nanosized reservoirs of MoS2 and diamondlike carbon (DLC). Coatings were produced using a combination of laser ablation and magnetron sputtering. They were characterized by x-ray photoelectron spectroscopy, x-ray diffraction, transmission electron microscopy, x-ray energy dispersive spectroscopy, and micro-Ram... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|