Ag-La_2NiO_4触点材料电弧侵蚀研究

Study on Arc Erosion of Ag-La_2NiO_4 Contact Materials

研究了Ag-La2NiO4触点材料在直流阻性负载条件下的材料转移,以及接触电阻等电接触性能。实验结果表明:不同电压(DC 8V、DC 18V)、电流条件下,材料的转移方向、转移量及损耗均不同;DC 18V下接触电阻和熔焊力很不稳定,且随电流值增加有不同程度的波动。

The contact resistance and the material transfer of Ag-La2NiO4 contact materials was studied under the condition of different DC and resistance load. The results indicate that the amount and the direction of the material transfer are different with the change of the voltage and the current： the transfer is from anode to cathode as voltage DC 8V or DC 18V with current〉20A, and the transfer direction is opposite as voltage DC 18V with current〈20A. The contact resistance and the welding resistance force are unstable and change with the current value.