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Anisotropic arc erosion resistance of Ag/Ti3AlC2 composites induced by the alignment of Ti3AlC2

Ag/Ti3AlC2 composites prepared by equal channel angular pressing (ECAP) exhibit preferential alignment of Ti3AlC2. Arc erosion behaviors of the Ag/Ti3AlC2 with the alignment of Ti3AlC2 particles parallel (ECAPed//) and perpendicular (ECAPed?) to contact surface were investigated. The ECAPed// sample shows superior arc erosion resistance to the ECAPed? one according to the results on surface and cross section examinations, and mass, area and thickness losses. The mechanisms responsible for arc erosion behaviors are discussed in terms of thermodynamic calculations and lattice anisotropic considerations on the oxidation process of Ti3AlC2. The present work provides practical guidance in designing high-performance Ag/MAX electrical contacts.

» Author: Dan Dan Wang, Wu Bian Tian, Jian Xiang Ding, Ai Bin Ma, Yong Fa Zhu, Pei Gen Zhang, Wei He, Zheng Ming Sun

» Publication Date: 15/07/2020

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