Critical bending strains at room temperature and Ic values at 10–20 K of two kinds of in situ round MgB2 wires (“A” and “B” hereafter) were measured. Wire A is a mono-core wire with an Fe/Cu sheathe enclosing mechanically milled powder with coronene (C24H12) as a dopant. Wire B is a 10-filaments wire made with Fe, Cu, Monel, and ball-milled powder. These MgB2 wires were sintered at several temperature and times, and the influences of sintering conditions on critical bending strains and Ic values of the short sample wires were investigated. The results of the investigations revealed that critical bending strains of both wires were improved by raising sintering temperature from 600 °C to 700 °C.

中文翻译：

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烧结条件对原位 MgB2 丝在 RT 和 I c 处弯曲公差的影响


测量了两种原位圆形 MgB2 线（以下简称“A”和“B”）在室温下的临界弯曲应变和 10-20 K 时的 Ic 值。Wire A 是一种单芯线，带有 Fe/Cu 护套，包裹着机械研磨的粉末，其中用 coronene （C24H12） 作为掺杂剂。Wire B 是一种由 Fe、Cu、Monel 和球磨粉末制成的 10 丝线。这些 MgB2 丝材在多个温度和时间下烧结，并研究了烧结条件对短样品丝的临界弯曲应变和 Ic 值的影响。研究结果表明，通过将烧结温度从 600 °C 提高到 700 °C，两种线材的临界弯曲应变都得到了改善。