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We studied the effects of binder addition on the mechanical properties of bulk Y–Ba–Cu–O superconductors. We prepared YBa2Cu3Oy, Y2BaCuO5 powders and polyvinyl alcohol mixed with water as a binder. These raw materials were mixed, and the binder-added powders were pressed into pellets. The hardness of the green compacts with binder is higher than that without the binder. However, the hardness of green...
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