Arc ablation properties of Ti3SiC2 material

Huang, Xiaochen; Feng, Yi; Qian, Gang; Zhou, Zijue

doi:10.1016/j.ceramint.2019.06.305

Cited by 25 publications

(9 citation statements)

References 53 publications

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“…At the first arc erosion test, since the cathode is covered with a gas layer, a high breakdown strength is occurred. As the number of arc erosion tests increases, the gas layer on the surface gradually thins out, resulting in the decrease in the breakdown strength 3 . Interestingly, in the last 20 or so arc erosion experiments, the breakdown strength tends to increase, which is called as the veteran phenomenon 26 .…”

Section: Resultsmentioning

confidence: 99%

“…The normal operations of these electric components mainly depend on the normal opening and closing of electric contact materials 1,2 . In the service process of electric contact materials, arc discharges between the mating electrodes are inevitable, which will greatly affect the performance of the electric contact materials 3 . Since sulfur hexafluoride (SF 6 ) gas possesses great insulating property and arc quenching performance, SF 6 gas is employed as the conventional insulating gaseous medium in power switching devices 4,5 .…”

Section: Introductionmentioning

confidence: 99%

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Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium

Zhou

Zhao

Feng

et al. 2021

Int J Applied Ceramic Tech

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To disclose the impact of SF6 gaseous medium on Ag/Ti3SiC2 contact materials, arc discharges on the Ag/Ti3SiC2 cathodes were performed 100 times in SF6 gas at 10 kV. After 1, 50, and 100 times of arc discharges, the morphologies of arc‐eroded surfaces were characterized. The changes in breakdown strength with the number of tests were recorded. After 100 times of arc erosion, the composition of the surface was characterized, and the morphologies and compositions of the cross section were measured. In the process of multiple arc breakdowns, the arc erosion position randomly changes. In the later stage of tests, the breakdown strength of Ag/Ti3SiC2 increased. The protrusion on the arc‐eroded surface is the ignition point for the arc, the down of protrusion height and the smooth of protrusion tip were observed after multiple arc discharges, which may result in the increase in breakdown strength. After multiple arc erosion tests, Ag2S was detected on the surface by XPS, and part of silicon elements were dissociated outward from Ti3SiC2. The composition change is inferred to be one of the reasons for the rise of breakdown strength.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium

Zhou

Zhao

Feng

et al. 2021

Int J Applied Ceramic Tech

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“…The bigger blue rectangle in Figure 3d is the enlarged image of the smaller blue rectangle. Obviously, pores are generated on the eroded surface, which is caused by the changed solubility of gases in air during the rapid solidification process [30]. Under the action of electromagnetic force, gravity, and plasma force, the molten liquid accumulates in one direction, as shown in the green rectangle in Figure 3e.…”

Section: Resultsmentioning

confidence: 99%

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Huang

Feng

et al. 2019

Materials

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A Cu-Ti3AlC2 cathode was eroded by arc discharging at 10 kV. The cross-sectional and horizontal morphologies of the eroded surface were recorded by a field emission scanning electron microscope (FE-SEM). The energy dispersive X-ray spectroscopy (EDS) and Raman spectrometry were carried out to analyze the compositions. The color-eroded surface was obtained by a three-dimensional laser scanning confocal microscope (3D LSCM). After 100 times of arc erosion, the Cu-Ti3AlC2 melted and resolidified. An eroded layer about 10 μm thick was formed, covered with pits, protrusions, and pores. The breakdown current was kept between 37 to 43 A. Under the action of a high temperature arc, Cu-Ti3AlC2 was oxidized to CuO and TiO2, accompanying the evaporation of the Al element.

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“…Its layered crystal structure is comparable to that of well-known graphite and MoS 2 solid lubricants, implying that it may be an excellent solid lubricant material with a low friction coe cient [6]. Thus, Ti 3 SiC 2 could nd potential applications in bearings, turbines, cutting tools, electrical contacts, heat exchangers [7][8][9][10][11], etc. However, this is severely hampered by low hardness (4.54 GPa) and wear resistance (0.21-1.87×10 −3 mm 3 /N•m) of Ti 3 SiC 2 ceramics [12].…”

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confidence: 99%

“…In this study, we prepared the TiC 0.4 (10,20, and 30 vol.%) particles-reinforced Ti 3 SiC 2 matrix composites using SPS. Meanwhile, the effect of TiC0.4 content on the microstructure, mechanical properties, and friction and wear behaviour of the composites was systematically investigated, and the related mechanism was discussed.…”

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Effect of TiC0.4 Addition on Microstructures and Properties of Ti3SiC2 Matrix Composites

Zou

Lou

Liu

et al. 2022

Preprint

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TiC0.4-Ti3SiC2 composites were manufactured using spark plasma sintering (SPS) at 1400°C for 10 min, with an applied pressure of 40 MPa. The effect of TiC0.4 additions on microstructures and properties of Ti3SiC2 matrix composites was investigated. The addition of TiC0.4 induced the formation of TiCx (0.4༜x≤1) and promoted the decomposition of Ti3SiC2, yielding TiCx and Ti5Si3. The mechanical and tribological properties of the TiC0.4-Ti3SiC2 composite improved with the TiC0.4 content due to C vacancy present in TiC0.4, although the friction distance in the initial stage of friction test was increased. The 30 vol.% TiC0.4-Ti3SiC2 composites exhibited the highest hardness and fracture toughness of 14.87 GPa and 5.45 MPa⋅m1/2. At the same conditions, the wear rate at room temperature reached a minimum value of 4.32×10−7mm3N−1m−1, while the friction coefficient was 0.74. The friction distance in the initial friction stage of 30 vol.% TiC0.4-Ti3SiC2 was about 38 m, and the wear mechanism of the composite at room temperature was mainly adhesive wear.

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Arc ablation properties of Ti3SiC2 material

Cited by 25 publications

References 53 publications

Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium

Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Effect of TiC0.4 Addition on Microstructures and Properties of Ti3SiC2 Matrix Composites

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Arc ablation properties of Ti3SiC2 material

Cited by 25 publications

References 53 publications

Arc erosion characteristics evolution of Ag/Ti3SiC2 composites during repetitive arc breakdowns in SF6 gaseous medium

Arc erosion characteristics evolution of Ag/Ti3SiC2 composites during repetitive arc breakdowns in SF6 gaseous medium

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Effect of TiC0.4 Addition on Microstructures and Properties of Ti3SiC2 Matrix Composites

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Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium

Arc erosion characteristics evolution of Ag/Ti₃SiC₂ composites during repetitive arc breakdowns in SF₆ gaseous medium