Tribological transfer mechanisms and large area micro-contact simulation of solid lubricant supply from PVD layers for dry running gear stages

干运转齿轮级 PVD ​​层固体润滑剂供应的摩擦学传递机制和大面积微接触模拟

• 批准号: 407625150
• 负责人: Professor Dr.-Ing. Christian Brecher
• 金额: --
• 依托单位: Forschungsbereich Werkzeugmaschinen
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/407625150?language=en
• 关键词: Tribological; transfer; mechanisms; large; area

The proposed second funding period of the project "Tribological transfer mechanisms and large-area microcontact simulation of solid lubricant supply from PVD coatings for dry-running gear stages" aims to investigate the transient loads in exclusively solid-lubricated, highly loaded gear stages within the DFG priority program 2074 "Fluid-free lubrication systems with high mechanical loads". In the first funding period, model- and gear analogy tests were carried out to systematically investigate coating and substrate material combinations, so that a database exists regarding the tribological behaviour of promising variants. In particular, two-layer coating systems based on MoSX and deposited by high power impulse magnetron sputtering (HPPMS) showed tolerable surface pressures of up to 1.6 GPa in the tooth flank analogy test, with a reduction of the friction coefficient to 0.02. The planned activities within 4 work fields are therefore targeted on a further development of the systems and the identification of additional effects in the real tribological system "gear". On the one hand, this includes the production, coating and initial characterisation of test specimens in work field 1, which are tested and characterised in detail in work field 2. The focus is on tests on the gear test rig in combination with a wear analysis, supplemented by high-temperature measurements of the mechanical coating properties and analyses of the fatigue resistance under cyclic loading. The third field of work extends the microcontact simulation of the first funding period, with a special focus on the contact properties of dry-running tooth flanks. In work field 4, the results from the first and second funding periods are combined in order to identify additional effects in the tooth flank contact on the one hand and to derive strategies and evaluation criteria for the use of solid lubricated systems on the other. At this point, there is an interaction with the other projects of the priority programme in order to increase the comparability of this type of lubrication systems.

“PVD涂层为干式齿轮级提供固体润滑剂的摩擦学传递机制和大面积微接触模拟”项目的第二个资助期旨在研究DFG优先计划2074“高机械负荷的无流体润滑系统”中纯固体润滑、高负荷齿轮级的瞬态载荷。在第一个资助期内，进行了模型和齿轮类比试验，以系统地研究涂层和基板材料组合，以便建立一个关于有希望的变体摩擦学行为的数据库。特别是，基于MoSX的高功率脉冲磁控溅射（HPPMS）沉积的两层涂层系统在齿侧模拟测试中显示出高达1.6 GPa的耐受表面压力，摩擦系数降低到0.02。因此，在4个工作领域内的计划活动的目标是进一步发展系统，并确定实际摩擦学系统“齿轮”的额外影响。一方面，这包括工作领域1中试件的生产、涂层和初始表征，在工作领域2中进行详细的测试和表征。重点是在齿轮试验台上进行试验，结合磨损分析，辅以机械涂层性能的高温测量和循环载荷下的抗疲劳分析。第三个工作领域扩展了第一个资助期的微接触模拟，特别关注干跑齿侧翼的接触特性。在工作领域4中，将第一和第二个资助期的结果结合起来，一方面确定齿侧接触的额外影响，另一方面得出使用固体润滑系统的策略和评价标准。在这一点上，与优先方案的其他项目相互作用，以增加这类润滑系统的可比性。