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

Abstract

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.

Effects of Ti2SnC MAX Phase on Microstructure, Mechanical, Electrical, and Wear Properties of Stir‐Extruded Copper Matrix Composite

“…[ 8 ] Combining these features has made using these materials in CMCs an excellent alternative to ceramic and metal reinforcing particles. [ 9,10 ]…”

“…[8] Combining these features has made using these materials in CMCs an excellent alternative to ceramic and metal reinforcing particles. [9,10] The FSBE process is a novel method for producing sound wires in a single step and is one of the techniques for applying severe plastic deformation. The basis of this process is friction stir welding, and in addition to wire production, it is used in manufacturing products such as rods, pipes, and others.…”

Microstructures and properties of copper matrix composite wires reinforced with Ti2SnC particles

“…Like ceramics, the MAX phases exhibit various properties, such as high elastic modulus, high ductility, and relatively low density, and similar to metals, it has machinability, and electrical and thermal conductivity [17]. The combination of these features has made the use of these materials in CMCs a good alternative to ceramic and metal reinforcing particles [18].…”

Erosion behavior and mechanism of Cu-B4C composites under arc discharge in different atmospheres

“…Electrical contact materials are required to have good electrical and thermal conductivity in addition to strength, resistance to welding and resistance to arc erosion. Typically, they consist of a high conductivity matrix and a high melting point component with high wear resistance and resistance to arc erosion [5,6] Copper is considered one of the best choices for electrical contact materials because of its excellent thermal conductivity (401 W mK −1 ) and electrical conductivity (5.96×10 7 S m −1 ), in combination with its low cost and ease of processing [7,8]. However, the poor hardness of copper and its tendency to oxidize at high temperatures limit its use as an electrical contact material [9].…”