非对称配对触头材料的电性能试验研究

Experimental Study on Electrical Contact Performance under Different Pairing

为进一步了解不同材料配对时触头电性能的优劣,本文开展了AgNi、AgCdO、AgSnO_2及其不同配对的抗熔焊能力、侵蚀量、燃弧时间等试验,利用SEM分析了材料表面成分变化规律。研究表明非对称配对触头在抗熔焊、抗侵蚀、燃弧时间等方面呈现"优化效应"、"劣化效应"、"中间效应"等多种模式。

In order to further evaluate the electrical contact performance of contacts under different pairing, experiments of the ability of anti-dynamic welding, erosion amounts and arc duration of AgNi, AgCdO, AgSnO2 and their different pairings are conducted and the change rules of material compositions of contact surface are analyzed by SEM in this paper. Research suggests that there exist ＂improving effect＂, ＂deteriorating effect＂ and ＂intermediate effect＂ for the anti-dynamic weld- ing, anti-erosion and arc duration when different contact materials are paired asymmetrically.