Amorphization reaction of Ni-Ta powders during mechanical alloying

Pee Yew Lee, J. U.Lung Yang, Chung Kwei Lin, Hong Ming Lin

研究成果: 雜誌貢獻文章同行評審

15 引文 斯高帕斯(Scopus)


This study examined the amorphization behavior of NixTa100-x alloy powders synthesized by mechanically alloying (MA) mixtures of pure crystalline Ni and Ta powders with a SPEX high energy ball mill. According to the results, after 20 hours of milling, the mechanically alloyed powders were amorphous for the composition range between Ni10Ta90 and Ni80Ta20. A supersaturated nickel solid solution formed for Ni90Ta10, as well. X-ray diffraction analysis reveals two different types of amorphization reactions. Through an intermediate solid solution and by direct formation of amorphous phase. The thermal stability of the amorphous powders was also investigated by differential thermal analysis. As the results demonstrated, the crystallization temperature of amorphous Ni-Ta powders increased with increasing Ta content. In addition, the activation energy of amorphous Ni-Ta powders reached a maximum near the eutectic composition.
頁(從 - 到)1429-1435
期刊Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
出版狀態已發佈 - 1997

ASJC Scopus subject areas

  • 凝聚態物理學
  • 材料力學
  • 金屬和合金


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