Research Progress on Reinforcing Phases of High Arc Resistance Silver-Based Electrical Contact Materials

doi:10.12068/j.issn.1005-3026.2025.20250074

Abstract

Abstract:

The arc resistance of silver-based electrical contact materials is directly related to electrical reliability. This paper reviews the research progress of the arc resistance of silver-based electrical contact materials from two perspectives： passive and active arc resistance. In terms of passive arc resistance， the improvement of the melt pool wettability of the reinforcements， the regulation of geometric shapes， and the application of high thermal conductivity and electrical conductivity ceramics are discussed in detail. The addition of components that improve the melt pool wettability and the use of reinforcements with special geometric shapes， such as nanoporous structures and sandwich structures， have effectively enhanced the arc resistance of silver-based electrical contact materials. Moreover， the incorporation of high thermal conductivity and electrical conductivity ceramics has provided new insights into the arc resistance of these materials. Regarding active arc resistance， the mechanisms of high voltage-resistant reinforcements， dissolving arc interruption reinforcements， vaporizing arc quenching reinforcements， and solid-state phase transformation arc quenching reinforcements are analyzed. Under the development trends of intelligence， electrification， and high power， only by synergistically improving both active and passive arc resistance can the increasingly complex working conditions be met， which is an important direction for the future development of electrical contact materials.

Key words: silver-based electrical contact materials, arc resistance performance, active arc resistance, passive arc resistance

CLC Number:

TB 331

Xu-dong SUN, Bin LIU, Zhi-jie LIN. Research Progress on Reinforcing Phases of High Arc Resistance Silver-Based Electrical Contact Materials[J]. Journal of Northeastern University(Natural Science), 2025, 46(8): 32-40.

Figures/Tables 4

Fig.1 Schematic illustration of crack tip blunting mechanism in the prepared Ag-SnO2 materials with CuO[32]

Fig.2 Combined action of heat and force on the Ag-SnO2 electrical contact materials under cathode arc erosion[34]

Fig.3 Anti-arc mechanism of new Ag-TiN electrical contact material[40]

Fig.4 Schematic diagram of the mechanism of action of Ag multiphase(MgCoNiCuZn)O high entropy oxide[61]

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