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Gaseous Hydrogenation and Its Effect on Thermal Stability of Mg63Ni22Pr15 Metallic Glass |
| DU Yu-Lei1;DENG Yan-Hui1;XU Feng1;CHEN Guang1,
CHEN Guo-Liang1;ZHANG Qing-An2 |
| ¹Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094
²School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002
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| Cite this article: |
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DU Yu-Lei, DENG Yan-Hui, XU Feng et al 2006 Chin. Phys. Lett. 23 3320-3322 |
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Abstract Mg63Ni22Pr15 metallic glasses are produced by a single roller melt-spinning technique. The hydrogen absorption and desorption capacities are respectively 0.38 and 0.14 wt.% at 313 K obtained by pressure-composition isotherm. The amorphous structure is found to be retained after gaseous hydrogenation. The glass transition temperature, the onset crystallization temperature, and the crystallization temperature of the hydrogenated Mg63Ni22Pr15 metallic glass are 550, 570 and 577 K, respectively, much higher than the corresponding values of 440, 470 and 499 K of the as-quenched sample. This means that dramatic enhancement of thermal stability occurs in Mg63Ni22Pr15 metallic glass due to hydrogenation.
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| Keywords:
61. 43. Dq
64. 70. Pf
65. 60. +a
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Published: 01 December 2006
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