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The influence of mill power and grinding environment on the contamination of quartz by iron during vibration grinding was studied. It was found that the Fe content of ground powders increased with an increase in specific grinding energy that was independent of the conditions of energy supply, that is whether it was supplied by varying the mill power or the grinding time. The specific contamination...
YBa 2 Cu 3 O 7-x compound (T C = 90 K) was milled in a rotary mill for up to 30 h. Study of the thermal behaviour by differential scanning calorimetry revealed one exothermic peak in the temperature interval up to 400°C with the highest rate of heat release at T max . The thermal effect increased with the time of milling. The shift of...
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