Deposition of the system Mo-N-(Ag) by using highly-ionized PVD methods and its investigation with regard to high performance wear protection and electrical sliding contact

采用高离子化 PVD ​​方法沉积 Mo-N-(Ag) 系统及其高性能磨损防护和电滑动接触的研究

• 批准号: 354352022
• 负责人: Dr. Martin Fenker
• 金额: --
• 依托单位: Forschungsinstitut Edelmetalle und Metallchemie (fem)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/354352022?language=en
• 关键词: Deposition; system; Mo; Ag; using

With the constraint of energy efficiency, materials are forced to the border of resilience. The combination of high temperature and mechanical wear for example is a heavy-duty mechanical process. Diamond-like carbon (DLC) coatings are of limited suitability for this application. Coatings on the basis of Mo-N seem to be more promising. Additionally, the system Mo-N-(Ag) which will be developed within the project, has certain relevance as coating material for electrical sliding contacts for the industrial sector of German electrical power industry. These coatings have the potential to fulfill the requirements with respect to power density for the electrical power supply.High performance wear protecting coatings made from Mo-N or from the less studied system Mo-N-Ag, respectively, show low friction coefficients due to the formation of the lamellar MoO3 phase, Magnéli phases or Ag molybdate phases. For the first time three different PVD techniques - dc magnetron sputtering (dcMS), high power impulse magnetron sputtering (HiPIMS) and pulsed laser deposition (PLD) - are utilized in parallel for the synthesis of those coatings. These techniques differ drastically with respect to the ionization degree of the sputtered species and to the ionization/dissociation degree of the N2 gas. The coating properties of the system Mo-N-(Ag) can be tailored by the control of the plasma conditions. The essential scientific-technological goals are the demanding deposition of stoichiometric Mo-N coatings, the development of new high performance Mo-N-(Ag) coatings by alloying with silver and the optimization of appropriate electrical and mechanical-tribological properties.Finally, a systematic understanding of the performance of the coating systems will be achieved by acquiring the plasma and coatings properties and by correlating them with each other. The obtained results will serve for the setting up of an empirical model for the tribological and electrical behavior of Mo-N-Ag coatings. The project will deliver an important contribution to the question of how much ionization in combination with kinetic energy do we need for the film-forming species to tailor selectively coating properties like for example to be able to control the stoichiometry of Mo-N.

在能源效率的约束下，材料被迫接近弹性边界。例如，高温和机械磨损的结合是一个重型机械过程。类金刚石碳 (DLC) 涂层对此应用的适用性有限。基于 Mo-N 的涂层似乎更有前途。此外，该项目将开发的Mo-N-(Ag)系统作为德国电力工业部门的电气滑动触点涂层材料具有一定的相关性。这些涂层有可能满足电源功率密度的要求。分别由 Mo-N 或研究较少的 Mo-N-Ag 系统制成的高性能耐磨涂层，由于形成层状 MoO3 相、Magnéli 相或钼酸银相，因此表现出较低的摩擦系数。首次并行利用三种不同的 PVD ​​技术——直流磁控溅射 (dcMS)、高功率脉冲磁控溅射 (HiPIMS) 和脉冲激光沉积 (PLD) 来合成这些涂层。这些技术在溅射物质的电离度和氮气的电离/离解度方面有很大不同。 Mo-N-(Ag)系统的涂层特性可以通过控制等离子体条件来定制。基本的科学技术目标是要求沉积化学计量的 Mo-N 涂层、通过与银合金化开发新型高性能 Mo-N-(Ag) 涂层以及优化适当的电气和机械摩擦学性能。最后，通过获取等离子体和涂层性能并将它们相互关联，将系统地了解涂层系统的性能。所得结果将有助于建立Mo-N-Ag涂层摩擦学和电学行为的经验模型。该项目将对成膜物质需要多少电离与动能相结合的问题做出重要贡献，以选择性地定制涂层性能，例如能够控制 Mo-N 的化学计量。