Ag/Cr<sub>2</sub>AlC电接触材料的微观组织与耐电弧侵蚀性能

doi:10.11896/cldb.23080215

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Abstract Ag-based electrical contact materials are widely used in low-voltage circuit control devices, serving the role of carrying, breaking, and closing electrical currents in circuits. Cr₂AlC, as a representative of the M_n+1AX_n phases, possesses a combination of the excellent properties of both metals and ceramics, making it a promising reinforcing phase in Ag-based electrical contact materials. In this work, Ag/Cr₂AlC composites were prepared using powder metallurgy method. The microstructure including interfacial reactions, the physical properties and arc erosion resistance were investigated. The results indicated that due to the weak bonding of Al atoms, significant interfacial reactions occurred between Ag and Cr₂AlC after sintering, resulting in the formation of Ag₃Al and Cr-C compounds. In comparison to the green bodies, the density and hardness of the sintered Ag/Cr₂AlC were reduced, i.e., 9.04 g/cm³ and (78.9±5.5)HV, respectively. However, due to the occurrence of interfacial reactions, the electrical resistivity of the Ag/Cr₂AlC substantially increased to (141.9±0.4)×10^-9 Ω·m. Arc erosion tests revealed that the mass loss of the Ag/Cr₂AlC was 6.25%, and the main arc erosion product was Al₂O₃. Meanwhile, Ag undergone melting and sputtering, resulting in a noticeable protrusions.

Key words： electrical contact materials MAX phases Ag/Cr₂AlC interfacial reaction arc erosion resistance

Published: 10 November 2024 Online: 2024-11-11

CLC number:

TQ174

Fund:National Natural Science Foundation of China (52302057), Natural Science Foundation of Jiangsu Province (BK20220627), Appliecl Basic Research of Changzhou City (CJ20210114), Natural Science Research Project of Universities of Jiangsu Province (21KJB430001).

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	Articles by authors
	WANG Dandan
	ZHU Hongyu
	WEI Kunxia
	WEI Wei
	TIAN Wubian
	SUN Zhengming

Cite this article:

WANG Dandan,ZHU Hongyu,WEI Kunxia, et al. Microstructure and Arc Erosion Resistance Properties of Ag/Cr₂AlC Electrical Contact Materials[J]. Materials Reports, 2024, 38(21): 23080215-5.

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http://www.mater-rep.com/EN/10.11896/cldb.23080215 OR http://www.mater-rep.com/EN/Y2024/V38/I21/23080215

1 Li G, Yang T, Ma Y, et al. Ceramics International, 2020, 46(4),4897.
2 Romanov D, Moskovskii S, Konovalov S, et al. Journal of Materials Research and Technology, 2019, 8(6), 5515.
3 Li H, Wang X, Hu Z, et al. Vacuum, 2020, 175, 109290.
4 Kesim M T, Yu H, Sun Y, et al. Corrosion Science, 2018, 135, 12.
5 Kang X, Xie X, Zhang L. Wear, 2020, 460-461, 203458.
6 Chen Y L, Yang C F, Yeh J W, et al. Metallurgical and Materials Tran-sactions a-Physical Metallurgy and Materials Science, 2005, 36A(9), 2441.
7 Wang J, Duan C, Chen S, et al. Journal of Materials Engineering and Performance, DOI.org/10.1007/s11665-023-08300-x.
8 Wu C, Yuan M, Wu Q, et al. Journal of Alloys and Compounds, 2020, 826, 154146.
9 Sun Z. International Materials Reviews, 2011, 56(3), 143.
10 Yao Y W, Yang F Y, Zhao S, et al. Materials Reports, 2022, 36(23), 66.
姚亿文, 杨飞跃, 赵爽, 等.材料导报, 2022, 36(23), 66.
11 Mesquita G J, Ferreira N M, Reis R M S, et al. Journal of the European Ceramic Society, 2023, 43(14),5894.
12 Zhu X Y, Ding Z N, Ma G Z, et al. Materials Reports, 2022,36(7),75.
朱咸勇, 丁振宇, 马国政, 等.材料导报, 2022,36(7),75.
13 Tian W, Wang P, Zhang G, et al. Scripta Materialia, 2006, 54(5), 841.
14 Lin Z, Zhou Y, Li M, et al. Zeitschrift für Metallkunde, 2005, 96, 291.
15 Wang Q M, Mykhaylonka R, Flores Renteria A, et al. Corrosion Science, 2010, 52(11), 3793.
16 Zhang P, Ngai T L, Xie H, et al. Journal of Physics D: Applied Physics, 2013, 46(39), 395202.
17 Hu S, Li S, Li H, et al. Journal of Alloys and Compounds, 2018, 740, 77.
18 Tian W, Wang P, Kan Y, et al. Journal of Materials Science, 2008, 43(8), 2785.
19 Wang D, Zhu H, Zheng M, et al. Journal of Alloys and Compounds, 2023, 961, 170870.
20 Rong M Z, Feng J X, Yang W, et al. Low Voltage Apparatus,1998(1), 13.
荣命哲, 冯建兴, 杨武.低压电器, 1998(1), 13.
21 Wang D, Tian W, Ding J, et al. Journal of Alloys and Compounds, 2020, 820, 153136.