Hydrogen-Induced Amorphization of Nd_3Ga and Sm_3Ga Compounds with D0_<19> Structure
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概要
- 論文の詳細を見る
Structural changes of c-R_3Ga ( R=Nd, Sm ) compounds having the D0_<19> structure during the hydrogen absorption process were investigated by x-ray diffraction, electron microscopy, and the thermal analysis. By hydrogenation of c-Nd_3Ga and c-Sm_3Ga compounds, an amorphous single phase a-Nd_3GaH_<6.2> and a-Sm_3GaH_<5.9> was formed between 300 K and 400 K, respectively. However, hydrogenation of the compounds gave rise to the transformation from the D0_<19> phase to c-Nd_3GaH_x and c-Sm_3GaH_x having the fcc structure above 450 K. Crystallization of the hydrogen-induced amorphous alloys was studied by differential scanning calorimetry from which the crystallization temperature, the enthalpy change, and the activation energy of crystallization were determined.
- 東北大学の論文
- 1989-03-20
著者
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MASUMOTO Tsuyoshi
Institute for Materials Research, Tohoku University
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Masumoto T
The Research Institute Of Electrical And Magnetic Materials
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Aoki K
Tohoku Univ. Sendai Jpn
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Aoki Kiyoshi
The Research Institute For Iron Steel And Other Metals
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Aoki Kiyoshi
Institute For Materials Research
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Aoki Kiyoshi
Institute For Materials Research Tohoku University
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Li XingGuo
Institute for Materials Research
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Masumoto Tsuyoshi
Institute For Materials Research
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Aoki Kiyoshi
Institute for Materials Research, Tohoku University
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