welding generation of wear protection coatings for high temperature applications

用于高温应用的磨损保护涂层的焊接生成

• 批准号: 274523861
• 负责人: Professor Dr.-Ing. Volker Wesling
• 金额: --
• 依托单位: Institut für Schweißtechnik und Trennende Fertigungsverfahren
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/274523861?language=en
• 关键词: welding; generation; wear; protection; coatings

The statistical distribution of hard phases by size, shape and orientation has a substantial influence to the wear resistance of hard alloys. At attacks of granular materials it is necessary that the space between the hard phases is smaller than the average particle diameter of abrasive. Hereby the hard phases are embedded in a comparatively matrix. Pseudo alloys for applications at room temperature are established. The goal of the project is the generation and qualification of pseudo alloys for high temperature applications. High-alloyed and high-temperature-resistant alloys on Ni- and Co-base are used. These alloys are reinforced with different dissimilar hard phases. The welding investigations will be done with the PTA-process, because this welding procedure has the necessary variability regarding the processible amount of hard phases and energy management for pseudo alloys. The welded alloys are characterized with abrasive and erosive wear tests up to a working temperature of 800°C. A main focus will be the change of wear mechanisms correlated to the microstructure and the composition of the hard phases at increasing temperatures.

硬质相的尺寸、形状和取向的统计分布对硬质合金的耐磨性有很大的影响。在颗粒材料的攻击下，硬质相之间的空间必须小于磨料的平均粒径。因此，硬相嵌入在相对基质中。建立了适用于室温的准合金。该项目的目标是生成和鉴定用于高温应用的伪合金。采用镍基和钴基高合金和耐高温合金。这些合金用不同的硬质相增强。焊接研究将采用PTA工艺进行，因为该焊接工艺在可加工的硬相量和伪合金的能量管理方面具有必要的可变性。焊接合金的特点是在高达800°C的工作温度下进行磨料和侵蚀磨损测试。一个主要的焦点将是磨损机制的变化相关的显微组织和组成的硬质相在升高的温度。