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(CP-Nb)/Cu-Cd electrical contact material, which contains 1.7 wt.% of Cd, 0.5 wt.% of CP (man-made diamond particles) and 2.0 wt.% of Nb, is fabricated by powder metallurgy process and is considered to be used as a low cost substitute of silver-based contacts in heavy duty AC contactors. The existing state of each element was analyzed and the improvement of arc erosion resistance was achieved by introducing...
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