Phase transformation in Nb—16 at.% Si processed by high-energy ball milling
Phase transformation in Nb—16 at.% Si processed by high-energy ball milling
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DOI：
10.1016/s0022-3093(97)00325-6
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发表时间：
1997-10
影响因子：
3.5
通讯作者：
M. Perdigão;JoséA.R. Jordão;C. S. Kiminami;W. Botta
中科院分区：
文献类型：
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作者：
M. Perdigão;JoséA.R. Jordão;C. S. Kiminami;W. Botta
成分为Nb-16 at.%的Nb和Si元素粉末在高能球磨过程中的相演变Si作为球磨时间和球磨功率的函数进行研究。通过X射线衍射和量热法表征所获得的粉末。球磨既可以产生Nb <$Si过饱和固溶体，也可以产生非常细小的部分非晶化混合物。进一步研磨无定形混合物可导致机械结晶和转变，其导致Nb和Nb 5Si 3和Nb 3Si金属间化合物的形成。
Evolution of phases during high-energy ball-milling of elemental powders of Nb and Si of composition Nb—16 at.% Si were studied as a function of milling time and milling power. Powders obtained were characterized by X-ray diffraction and calorimetry. Milling can result either in NbSi supersaturated solidsolution or in a very fine partially amorphized mixture. Further milling of the amorphous mixture can result in mechanical crystallization and transformation that leads to formation of Nb, and Nb5Si3and Nb3Si intermetallic compounds.