AgSnO_2触头微观结构设计及电弧侵蚀模拟的进展

AgSnO_2作为一种无毒环保材料,因其优良的电接触性能而被广泛应用于低压开关和电源继电器领域。本文综述了近年来AgSnO_2触头材料的研发进展:在实验方面,分析比较了不同AgSnO_2电接触材料制备工艺的优缺点,介绍了AgSnO_2触头材料掺杂改性途径及其作用机理;在模拟方面,重点阐述了动、静触头电弧侵蚀过程以及触头微观结构演变行为,概述了基于第一性原理的触头掺杂体系的理论分析,介绍了考虑阳极蒸汽的真空电弧模拟研究。提出了结合实验和多尺度、多体系模拟来设计和研发新型AgSnO_2触头材料,对提高精密电气设备的可靠性和稳定性具有重要意义。

Research progress on microstructure design and arc-erosion simulation of AgSnO2 contact materials

As a non-toxic and environment friendly materials, AgSnO2 is widely used in the field of low voltage switches and power relays due to its excellent electrical contact performance. In this paper, the recent developments of AgSnO2 contact materials were introduced. In term of experiments, the advantages and disadvantages of the preparation processes in AgSnO2 contact materials were analyzed and compared, and the approach and mechanism of doping modification into AgSnO2 contact materials were introduced. In terms of simulation, the arc erosion process of moving and stationary contacts and the evolution behavior of the contact microstructure were mainly explained, and the theoretical analysis of the contact doping system based on the first principle was summarized, and the simulation of vacuum arc in the anode steam of contacts were introduced. It was proposed to design and develop a new type of AgSnO2 contact material combining experiments and multi-scale and multi-system simulation, which is of great significance to improve the reliability and stability of precision electrical equipment.