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- W2904343707 abstract "采用机械合金化和热处理相结合的方法制备了MgB2化合物；采用振动式高能球磨机进行球磨，研究了磨球尺寸、球磨时间、热处理温度、保温时间等对合金化效果的影响，获得了最佳制备工艺参数。结果表明，在保持磨球质量与粉末物料质量比不变的情况下，采用大尺寸不锈钢球（Φ10 mm）代替小尺寸球（Φ2 mm，Φ5 mm），可以提高球磨时的撞击能量，加速Mg-B粉末的机械合金化；热处理温度不宜超过Mg的熔点，否则Mg粉易发生氧化和挥发；热处理保温时间越长，对产物MgB2物相形成越有利；MgB2的最佳制备工艺参数为：Mg粉和B粉按摩尔比1:2混合，球磨介质为Φ10 mm的不锈钢球，磨球质量与粉末物料质量比20:1，球磨时间12 min，再将粉末在真空管式炉中进行热处理，升温速率为5℃/min，并在580℃下保温10 h。" @default.
- W2904343707 created "2018-12-22" @default.
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- W2904343707 date "2018-10-25" @default.
- W2904343707 modified "2023-09-23" @default.
- W2904343707 title "MgB 2 的制备及工艺优化" @default.
- W2904343707 doi "https://doi.org/10.14077/j.issn.1007-7812.2018.05.005" @default.
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