掺杂对AgSnO2触头材料润湿性及接触电阻的影响

The effects of doping additives on the wettability and contact resistance of AgSnO2 contact material

摘要:

润湿性反映了AgSnO2触头材料的物理性能，润湿性的改善会直接影响AgSnO2触头材料的电接触性能。而掺杂不同添加剂会改变AgSnO2触头材料的润湿性。本文选择TiO2、La2O3、Bi2O3三种添加剂，每种添加剂选取七种不同添加比例，测量掺杂后AgSnO2触头材料的润湿性。实验结果表明添加剂种类不同时，银对氧化物的润湿性会呈现出不同的变化规律，同一种添加剂对AgSnO2触头材料润湿性的影响程度与添加含量有直接关系。然后，对AgSnO2和掺杂三种不同添加剂的触头材料进行电接触性能测试，试验结果表明接触电阻的变化趋势与润湿性的变化规律基本吻合。

Abstract:

Wettability reflects the physical properties of AgSnO2 contact materials.Improving the wettability will directly affect the electrical contact performance of AgSnO2 contact materials.What’s more, doping with different additives can alter the wettability of the AgSnO2 contact material . In this paper, TiO2, La2O3, Bi2O3 three kinds of additives were chosen.Each additive was selected from seven different proportions, and the wettability of AgSnO2 contact material was measured.The results showed that the wetting angle of silver to oxide was different from the same time.What’s more,the influence of the same type of additives on the wettability of AgSnO2 contact material has a direct relationship with the addition content.In order to further verify,electrical properties of the contact materials for AgSnO2 and three kinds of additives were tested.The experimental results showed that the variation of contact resistance is basically consistent with the change of wettability.