As a new type of electrical contact material, Ag/Ti3AlC2 electrical contact material has attracted widespread attention. Exploring the influence of Ti3AlC2 particle size on the properties of Ag/Ti3AlC2 electrical contact material is of great significance for promoting the industrial production of Ag/Ti3AlC2 electrical contact material. This study investigates the effect of Ti3AlC2 particle size on the properties of Ag/Ti3AlC2 electrical contact materials within the range of average Ti3AlC2 particle sizes from 7.6 to 69.1 μm. The results show that as the Ti3AlC2 particle size decreases, the hardness and density of the Ag/Ti3AlC2 electrical contact materials increase, while the electrical conductivity decreases, and the mass loss under arc erosion reduces gradually. When the average particle size of Ti3AlC2 is 7.6 μm, the Ag/Ti3AlC2 electrical contact material exhibits the maximum density, the highest hardness, and the minimum mass loss under arc erosion. The reason is that as the particle size of Ti3AlC2 decreases, the distribution of Ti3AlC2 particles in the silver matrix becomes more uniform, and the effect of dispersion strengthening becomes more significant, resulting in a gradual increase in the hardness of the Ag/Ti3AlC2 electrical contact material. Moreover, fine Ti3AlC2 particles have higher surface activity and stronger interface bonding with the silver matrix, thereby enhancing the density of the Ag/Ti3AlC2 electrical contact material. Compared with the Ag/Ti3AlC2 electrical contact material prepared using 200TAC, the Ag/Ti3AlC2 electrical contact material prepared using 400-60TAC shows a 4.7% increase in density, a 21.5% increase in hardness, and a 77.9% reduction in the mass loss under arc erosion. Combining the findings of this study with those from (Ref <CitationRef CitationID="CR18">18</CitationRef>), it can be concluded that when the particle size of Ti3AlC2 is around 7.6 μm, the Ag/Ti3AlC2 electrical contact material achieves the minimum mass loss under arc erosion and exhibits the best arc erosion resistance.

Effect of Ti₃AlC₂ Particle Size on the Properties of Ag/Ti₃AlC₂ Electrical Contact Materials

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发表日期：

2026年7月29日

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Suxing Chen,
Songtao Liu,
Jiangnan Liu,
Fengyang Jiang,
Fang Si,
Yaming Ma,
Zian Wang,
Xiaoqi Ma,
Junbo Wang

摘要

As a new type of electrical contact material, Ag/Ti₃AlC₂ electrical contact material has attracted widespread attention. Exploring the influence of Ti₃AlC₂ particle size on the properties of Ag/Ti₃AlC₂ electrical contact material is of great significance for promoting the industrial production of Ag/Ti₃AlC₂ electrical contact material. This study investigates the effect of Ti₃AlC₂ particle size on the properties of Ag/Ti₃AlC₂ electrical contact materials within the range of average Ti₃AlC₂ particle sizes from 7.6 to 69.1 μm. The results show that as the Ti₃AlC₂ particle size decreases, the hardness and density of the Ag/Ti₃AlC₂ electrical contact materials increase, while the electrical conductivity decreases, and the mass loss under arc erosion reduces gradually. When the average particle size of Ti₃AlC₂ is 7.6 μm, the Ag/Ti₃AlC₂ electrical contact material exhibits the maximum density, the highest hardness, and the minimum mass loss under arc erosion. The reason is that as the particle size of Ti₃AlC₂ decreases, the distribution of Ti₃AlC₂ particles in the silver matrix becomes more uniform, and the effect of dispersion strengthening becomes more significant, resulting in a gradual increase in the hardness of the Ag/Ti₃AlC₂ electrical contact material. Moreover, fine Ti₃AlC₂ particles have higher surface activity and stronger interface bonding with the silver matrix, thereby enhancing the density of the Ag/Ti₃AlC₂ electrical contact material. Compared with the Ag/Ti₃AlC₂ electrical contact material prepared using 200TAC, the Ag/Ti₃AlC₂ electrical contact material prepared using 400-60TAC shows a 4.7% increase in density, a 21.5% increase in hardness, and a 77.9% reduction in the mass loss under arc erosion. Combining the findings of this study with those from (Ref 18), it can be concluded that when the particle size of Ti₃AlC₂ is around 7.6 μm, the Ag/Ti₃AlC₂ electrical contact material achieves the minimum mass loss under arc erosion and exhibits the best arc erosion resistance.

Effect of Ti3AlC2 Particle Size on the Properties of Ag/Ti3AlC2 Electrical Contact Materials

摘要

Effect of Ti₃AlC₂ Particle Size on the Properties of Ag/Ti₃AlC₂ Electrical Contact Materials