Dry ball milling and wet ball milling for fabriing copper–yttria ...
· The weight ratios of balltopowder and 3 kinds of milling balls are 5:1 and 1:1:1, respectively. The rotation speed of the mill vessel is 140 r·min −1. Reduction was carried out in hydrogen atmosphere for DBM powders at 500 °C for 60 min before sintering. The powders after WBM were preserved in a vacuum drying oven at 80 °C for 120 min. The milled composites .
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