(1. 华中科技大学 材料成形与模具技术国家重点实验室，武汉 430074；
2. 华中科技大学 电气与电子工程学院，武汉 430074)
摘 要: 采用有限体积法计算电弧作用下AgMeO触头材料温度场，深入分析第二相MeO颗粒的密度、比热容、热导率、分解温度和分解焓等物性参数对熔池接触面积的影响，详细说明MeO含量(体积分数)对熔池接触面积和熔焊力的影响，着重讨论电弧输入触头的能量、燃弧时间和燃弧半径对熔池接触面积的影响。结果表明：与第二相MeO的密度、热导率及体积分数等物性参数对熔池接触面积的影响相比，电弧输入能量的影响才是最主要的。
关键字: 银−氧化物触头；温度场；电弧参数；氧化物性质；熔池接触面积
（1. State Key Laboratory of Materials Forming and Die and Mould Technology,
Huazhong University of Science and Technology, Wuhan 430074, China
2. College of Electrical and Electronic Engineering,
Huazhong University of Science and Technology, Wuhan 430074, China）
Abstract:Based on the calculation results of the temperature field in AgMeO contact materials after arc by finite volume method(FVM), the effects of density, heat capacity, thermal conductivity, decomposition temperature and decomposition enthalpy of MeO phase on the contact area of the molten pool (CAMP) were analyzed. The effect of the density of MeO (volume fraction, %) on the contact area of the molten pool and fusion force was discussed in details. Finally, the input energy of the arc, the arc duration and the arc radius were considered to affect the contact area of molten pool as well. Comparing with the effects of MeO phase density, thermal conductivity and volume fraction etc on the contact area of the molten pool, the input energy of the arc in contact materials is the most important factor. Therefore, reducing the input energy in materials as much as possible is crucial to the research of AgMeO contact materials.
Key words: AgMeO contact material; temperature field; arc properties; properties of MeO; contact area of molten pool
