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首页> 外文期刊>Physica, C. Superconductivity and its applications >Fabrication of nanocrystalline and amorphous Chevrel phase PbMo6S8 powder by ball milling
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Fabrication of nanocrystalline and amorphous Chevrel phase PbMo6S8 powder by ball milling

机译：球磨法制备纳米晶和非晶Chevrel相PbMo6S8粉末

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Chevrel phase PbMo6S8 (PMS) superconducting powder ball-milled from 5 to 200 It has been investigated using Xray diffraction (XRD) and scanning and transmission electron microscopy. Ball milling produced particles with crystallites of PMS in the range 10-100 nm and amorphous phase. From XRD data, it was found that the crystallite size decreased and lattice strain increased with increasing milling time until by 200 h the material was predominantly amorphous. The powder ball-milled for 100 h was subsequently annealed at temperatures from 400 to 1000 degreesC for 8 h, Annealing at 600 degreesC and above released the lattice strain, At 800 degreesC and above the amorphous phase crystallised and grains coarsened with sizes in the range 50-100 nm. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 5]
机译：球磨5至200的雪佛尔相PbMo6S8（PMS）超导粉末已使用X射线衍射（XRD）以及扫描和透射电子显微镜进行了研究。球磨生产的颗粒具有10-100 nm范围内的PMS微晶和无定形相。从XRD数据可以看出，随着研磨时间的增加，微晶尺寸减小，晶格应变增加，直到200 h该材料主要为非晶态。球磨了100小时的粉末随后在400至1000摄氏度的温度下退火8个小时，在600摄氏度及以上的温度下退火释放出晶格应变，在800摄氏度及以上的温度下非晶态相结晶并晶粒粗化，尺寸范围为50-100纳米。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：5]

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