Study on Arc Erosion Behavior of a New Type of Ag-Ti_2AlN Electrical Contact Material AITranslate
Abstract AITranslate
A new type of Ag-Ti2AlN electrical contact materials were prepared by high energy ball milling and powder metallurgy.The arc erosion behavior and mechanism of the contact materials were studied.The surface microstructure of the contact after arc erosion was analyzed by scanning electron microscopy.The results show that Ti2AlN reinforcement has obvious advantages in improving the arc time,arc energy and welding resistance of Ag-matrix electrical contact materials.The average arc time,arc energy and welding strength of Ag-Ti2AlN contacts are 5.61 ms,59.8 mJ and 15 cN respectively in 70 000 on-off cycle tests. Under the action of vapor arc,the corrosion pit centers such as lava and sweat droplets are formed in the cathode of electric contacts.The Ti2 AlN reinforcement particles are fused into the silver melting pool by the diffusion of titanium and aluminum,which can improve the viscosity of the melt,and then enhance the arc erosion resistance.In addition,because of the preferential oxidation mechanism of Al element,the formed Al2O3 absorbs a lot of heat during vaporization,which reduces the mass gain of the anode and the height of the anode bulge,and effectively improves the reliability of electrical contact materials.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146[金属学及工艺—金属材料]
Citation Information:
A new type of Ag-Ti2AlN electrical contact materials were prepared by high energy ball milling and powder metallurgy.The arc erosion behavior and mechanism of the contact materials were studied.The surface microstructure of the contact after arc erosion was analyzed by scanning electron microscopy.The results show that Ti2AlN reinforcement has obvious advantages in improving the arc time,arc energy and welding resistance of Ag-matrix electrical contact materials.The average arc time,arc energy and welding strength of Ag-Ti2AlN contacts are 5.61 ms,59.8 mJ and 15 cN respectively in 70 000 on-off cycle tests. Under the action of vapor arc,the corrosion pit centers such as lava and sweat droplets are formed in the cathode of electric contacts.The Ti2 AlN reinforcement particles are fused into the silver melting pool by the diffusion of titanium and aluminum,which can improve the viscosity of the melt,and then enhance the arc erosion resistance.In addition,because of the preferential oxidation mechanism of Al element,the formed Al2O3 absorbs a lot of heat during vaporization,which reduces the mass gain of the anode and the height of the anode bulge,and effectively improves the reliability of electrical contact materials.
quote
| GB/T 7714-2015 | [1] JIA Hai-long, ZHU Gang, XIE Ming, et al. Study on Arc Erosion Behavior of a New Type of Ag-Ti_2AlN Electrical Contact Material[J]. Rare Metals and Cemented Carbides, 2019(1): 26-30. |
| MLA | [1] JIA Hai-long, et al., "Study on Arc Erosion Behavior of a New Type of Ag-Ti_2AlN Electrical Contact Material." Rare Metals and Cemented Carbides, no. 1, 2019, pp. 26-30. |
| APA | [1] JIA Hai-long, ZHU Gang, XIE Ming, LI Ai-kun, LIU Man-men, WU Di, & WU Xian-yue. (2019). Study on Arc Erosion Behavior of a New Type of Ag-Ti_2AlN Electrical Contact Material. Rare Metals and Cemented Carbides(1), 26-30. |
| IEEE | [1] JIA Hai-long, ZHU Gang, XIE Ming, LI Ai-kun, LIU Man-men, WU Di, and WU Xian-yue, "Study on Arc Erosion Behavior of a New Type of Ag-Ti_2AlN Electrical Contact Material," Rare Metals and Cemented Carbides, no. 1, pp. 26-30, 2019. keywords: {composite;Ag-matrix electrical contact material;Ti2 AlN reinforcement;electrical conductivity;arc erosion} |