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Journal of Advanced Ceramics 2019, 8(1): 90-101 https://doi.org/10.1007/s40145-018-0296-y
Research Article | Open Access | Issue | Published: 13 March 2019

Preparation and arc erosion properties of Ag/Ti2SnC composites under electric arc discharging

Show Author's Information Jianxiang DINGa,  Wubian TIANa( ),  Peigen ZHANGa,  Min ZHANGa,  Jian CHENa,  Yamei ZHANGb,  Zhengming SUNa,b( )
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Keywords:
MAX phase, metal-ceramic composite, arc erosion properties, microstructures, oxidation
Cite this article:
DING J, TIAN W, ZHANG P, et al. Preparation and arc erosion properties of Ag/Ti2SnC composites under electric arc discharging. Journal of Advanced Ceramics, 2019, 8(1): 90-101. https://doi.org/10.1007/s40145-018-0296-y
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Abstract Full text About this article

New Ag/Ti2SnC (Ag/TSC) composites with uniform microstructure were prepared by powder metallurgy. The superior wettability between Ag and Ti2SnC was confirmed with a contact angle of 14°. Arc erosion properties of Ag/10wt%Ti2SnC (Ag/10TSC) and Ag/20wt%Ti2SnC (Ag/ 20TSC) contacts were investigated under 400 V/100 A/AC-3 and compared with Ag/CdO contact. The Ag/10TSC contact exhibited comparable arc erosion property to Ag/CdO contact. The fine arc erosion resistance was attributed to the good wettability between Ti2SnC and Ag, the good heat-conducting property of Ag/10TSC, and the slight decomposition of Ti2SnC that absorbed part of electric arc energy. The excessive Ti2SnC significantly decreased the thermal conducting property of the Ag/20TSC composite, resulting in the severe heat accumulation that decomposed Ti2SnC and deteriorated arc erosion property. The oxidation behavior of Ti2SnC under high electric arc temperature was also studied and then an arc erosion mechanism was proposed to get a comprehensive understanding on the arc erosion property of Ag/TSC composites.


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About this article

Preparation and arc erosion properties of Ag/Ti2SnC composites under electric arc discharging

Show Author's information Jianxiang DINGa, Wubian TIANa( ), Peigen ZHANGa, Min ZHANGa, Jian CHENa, Yamei ZHANGb, Zhengming SUNa,b( )
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

Abstract

New Ag/Ti2SnC (Ag/TSC) composites with uniform microstructure were prepared by powder metallurgy. The superior wettability between Ag and Ti2SnC was confirmed with a contact angle of 14°. Arc erosion properties of Ag/10wt%Ti2SnC (Ag/10TSC) and Ag/20wt%Ti2SnC (Ag/ 20TSC) contacts were investigated under 400 V/100 A/AC-3 and compared with Ag/CdO contact. The Ag/10TSC contact exhibited comparable arc erosion property to Ag/CdO contact. The fine arc erosion resistance was attributed to the good wettability between Ti2SnC and Ag, the good heat-conducting property of Ag/10TSC, and the slight decomposition of Ti2SnC that absorbed part of electric arc energy. The excessive Ti2SnC significantly decreased the thermal conducting property of the Ag/20TSC composite, resulting in the severe heat accumulation that decomposed Ti2SnC and deteriorated arc erosion property. The oxidation behavior of Ti2SnC under high electric arc temperature was also studied and then an arc erosion mechanism was proposed to get a comprehensive understanding on the arc erosion property of Ag/TSC composites.

Keywords: MAX phase, metal-ceramic composite, arc erosion properties, microstructures, oxidation

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Publication history
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Publication history

Received: 21 June 2018
Revised: 17 August 2018
Accepted: 02 September 2018
Published: 13 March 2019
Issue date: March 2019

Copyright

© The author(s) 2019

Acknowledgements

This research was financially supported by the National Natural Science Foundation of China (Grant Nos. 51731004, 51671054, and 51501038), and the Fundamental Research Funds for the Central Universities in China (Grant Nos. 2242018K40108 and 2242018K40109) were highly appreciated.

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