Effects of Pt Content on Mechanical Properties of Dy123 Bulks

Mechanical properties of Dy123 (DyBa2Cu3Ox) dense bulks which had few pores and those of conventional Dy123 bulks which had micro-pores were evaluated. While the dense bulks were fabricated by heating precursors in O2 atmosphere, the porous bulks were fabricated in air. Mechanical properties of the dense bulks were superior to those of the porous bulks. The average sizes of Dy2BaCuO5 particles dispersed in the bulks with 0.5 wt.% Pt were smaller than those dispersed in the bulks with 0.25 wt.% Pt. Bending strength values of the former bulks were higher than those of the latter bulks.