TY - JOUR
T1 - Amorphization reaction of Ni-Ta powders during mechanical alloying
AU - Lee, Pee Yew
AU - Yang, J. U.Lung
AU - Lin, Chung Kwei
AU - Lin, Hong Ming
N1 - Funding Information:
The authors would like to thank the National Science Council of the Republic of China for financially supporting this work under Grant No. NSC 83-0405-E-019-002.
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
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U2 - 10.1007/s11661-997-0205-4
DO - 10.1007/s11661-997-0205-4
M3 - Article
AN - SCOPUS:0031192234
SN - 1073-5623
VL - 28
SP - 1429
EP - 1435
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 7
ER -