Wear-resistant and low-friction diamond-like-carbon (DLC)-layers for industrial tribological applications under humid conditions
Wear-resistant and low-friction diamond-like-carbon (DLC)-layers for industrial tribological applications under humid conditions
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DOI：
10.1016/j.surfcoat.2009.06.005
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发表时间：
2009-12
影响因子：
5.4
通讯作者：
W. Tillmann;E. Vogli;F. Hoffmann
中科院分区：
文献类型：
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作者：
W. Tillmann;E. Vogli;F. Hoffmann
优异的耐磨和摩擦性能是几乎所有工业部门的重要因素。它们以积极的方式增加了刀具寿命，同时也影响了功率消耗、工件表面光洁度和生产率。为了以更低的运营成本实现更高的生产率，使用具有增强的磨损和摩擦属性的工具尤为重要。新型无定形类金刚石碳（DLC）涂层工具在干燥甚至潮湿的环境中提供这些性能，这为木材加工行业提供了应用可能性。欧洲的林业、木材和造纸业每年的产值约为4000亿欧元。因此，供应行业非常有意识地开发高效的工具。特别是切削工具的磨损和高摩擦是散装木材加工中的限制因素。这项工作的重点是开发一种DLC系统，具有高耐磨性和摩擦阻力，也在潮湿的条件下，特别是存在于散装木材的加工过程中。使用物理气相沉积（PVD）工艺沉积了不同的DLC涂层系统，其中层特性与湿度条件相关。涂层性能和涂层参数进行了系统的分析，特别强调摩擦学属性。在磨损和摩擦试验期间使用碳化钨对应物来分析涂层的摩擦学行为。此外，拉曼光谱被用来表征层的微观结构。层结构和相应的磨损和摩擦性能之间的相关性已被仔细检查。
Excellent wear and friction properties are important factors in almost all branches of industry. They increase the tool life just as affecting the power consumption, the surface finish of the workpiece and the production rate in a positive way. To facilitate higher productivity at lower operating cost, it is of particular importance to use tools with enhanced wear and friction attributes. Novel amorphous diamond-like-carbon (DLC) coated tools provide these properties in dry and even in humid environment which offers application possibilities in the wood machining industry. The forestry, timber-, and paper-industry in Europe have a production value of approximately 400 billion Euros per year. For this reason, the supplying industry is very conscious to develop highly efficient tools. Especially wear and high friction of cutting tools are limiting factors in the processing of bulk wood. This work is focused on the development of a DLC-system with high wear and friction resistance also under humid conditions which especially exist during the processing of bulk wood. Using the Physical Vapor Deposition (PVD)-process different DLC-coating systems have been deposited, in which the layer properties have been designed related to the humidity conditions. The layer properties and coating parameters have been systematically analyzed with special emphasis on tribological attributes. Tungsten carbide counterparts were used during wear and friction tests to analyse the tribological behaviour of the coatings. Furthermore Raman spectroscopy was applied to characterize the layers microstructure. Correlations between layer structure and corresponding wear and friction properties have been scrutinized.