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Citation: Wei Shi-Qiang, Zhang Xin-Yi, Liu Wen-Han, Wang Xiao-Guang, Yang Hong-Wei, Yan Wen-Sheng. Structural Study of Ni-B Ultrafine Amorphous Alloy during Annealed Crystallization[J]. Acta Physico-Chimica Sinica, ;2001, 17(08): 750-752. doi: 10.3866/PKU.WHXB20010817 shu

Structural Study of Ni-B Ultrafine Amorphous Alloy during Annealed Crystallization

1.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei　230029

Received Date: 8 January 2001
Available Online: 15 August 2001

Xray absorption fine structure (XAFS) and Xray diffraction (XRD) have been combined to investigate the structure of NiB ultrafine amorphous alloy prepared by chemical reduction during the crystallization process. The results demonstrate that a fcclike nanocrystalline Ni phase with a mediumrange order and a nanocrystalline Ni3B alloy are formed at 573 K where the first exothermic process is observed. At annealing temperature of 773 K, large amount of NiB ultrafine amorphous alloy decomposes into metal Ni.
- XAFS;XRD;Ni-B ultraine amorphous alloy
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