CuW alloys have been widely used as contact materials in high-voltage SF

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circuit breaker and gas-insulated switchgear

and their erosion resistance performance determines the service life of the switchgear. The main preparation process of CuW contact materials include infiltration and powder sintering methods. It is found by the latest research progress that the key point of infiltration CuW alloys lies in the connection strength of the W skeleton

while the key of liquid-phase sintered CuW alloys lies in the wettability between the molten Cu and the W particles

which clarifies the research direction of the two processes. The research on the preparation of CuW alloy based on aluminothermic reduction process is described

and the proposed idea is to perform the sintering of precursor to reduce the activation energy of the reactants so as to promote the self-propagating reaction. At the same time

it is summarized that the current research on the modification of CuW alloy lies in the addition of reinforcing phases and deformation processing with the aim of providing guidance to the improvement of the technology on the industrial level

however

it still takes a certain amount of time on how to apply it in the industrial level. Finally

with focus on the whole research of the arc contact

it is clarified that the bonding strength between CuW and CrCu is a key factor for the whole of the arc contact material. Furthermore

a new direction for the improvement and development of the subsequent whole materials is provided.