During the use of AgWC12C3 contacts material, found that there are also problems of performance and quality, at present, the scientific and technological workers and researchers at home and abroad have adopted a lot of methods to improve part performance of AgWC12C3 contacts, for example, add the second phase elements (Co, Ni, Fe, etc.); use a secondary sintering multi-pressure process or chemical coating technologies to achieve this goal. However, because wettablity of Ag and WC, Ag and C is relatively poor, the connection of Ag and WC interface is not firm, but also because it is impossible to get mechanical bonding interface due to plastic deformation when they are under pressure, so the function of adjusting material composition and improving process on performance improvement of contacts material is limited.
In recent years, studies have shown that anti-welding properties, arc erosion resistance and other physical properties of the contacts material have a close relation with its microstructure, when the second phase presents fiber distribution, contacts material performance can be greatly improved.
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