低压触头材料电弧侵蚀与微结构相关性研究

项目名称： 低压触头材料电弧侵蚀与微结构相关性研究

项目编号： No.51274163

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 王献辉

作者单位： 西安理工大学

项目金额： 80万元

中文摘要： 电弧放电和触头材料烧蚀之间的交互作用一直是电工材料领域研究的重要课题，目前对低压触头材料电弧运动行为与微结构之间的交互关系和物理本质缺乏深入的理解，尚不能明确解释具有不同微结构特征的低压触头材料的电弧运动行为和电弧侵蚀机理。本项目通过研究具有不同微结构特征的导电陶瓷TiB2增强的的AgTiB2和非导电陶瓷SnO2增强的AgSnO2两种触头材料的第二相粒子的尺寸、数量和分布对电弧运动行为的影响规律，确定影响电弧侵蚀的因素。在此基础上系统研究两种触头材料在电弧作用下组织形貌和成分的演变，构建材料微结构与电弧运动和电弧侵蚀之间的关联，揭示低压电触头材料电弧侵蚀的物理本质。研究结果一方面能使人们从更深的层次认识和理解电弧运动行为，获得触头材料的微结构与电弧运动特性及其电弧侵蚀之间的关联，另一方面能使人们对低压触头材料的强化相选择和控制有深入的理解，为新一代新型银基触头材料的设计和制备提供理论依据。

中文关键词： 银基触头材料；电弧侵蚀；微结构；导电陶瓷；非导电陶瓷

英文摘要： The interaction between arc discharge and erosion has been one of the important research fields in the electrical contact materials. Due to lack of deep understanding of the interaction between arc motion behavior and microstructure and their physical essence, the arc motion behavior of low voltage contact materials with different microstructures has not been clarified so far. In this research program, the arc emotion behaviors of the conductive TiB2 ceramic reinforced Ag matrix contact material and the non-conductive SnO2 ceramic reinforced Ag matrix contact material with different sizes, amount and distribution of second reinforced phase are explored, and the factors that affect arc erosion are determined. Based on the research, the evolutions of microstructural morphology and constituents are systematically researched, and the correlation among microstructure, arc motion and arc erosion is established so as to disclose the physical essence of arc erosion for the low voltage contact materials. From the investigation, more deep insights can be got on the arc motion behavior, the relevance between microstructure, arc motion characteristic and arc erosion, and the slection and regulation of strengthening phase as well. Thus, it can provide the theory basis for the design and fabrication of novel low voltage conta

英文关键词： Ag base contact materials；Arc erosion；Microstructure；Conductive TiB2 ceramic；Non-conductive SnO2 ceramic