SHS hydrogenation of group IV metals as studied by time-resolved XRD

被引：2
|
作者：
Kovalev D.Y. [1 ]
Sytschev A.E. [1 ]
Kovalev I.D. [1 ]
Dekhtyar A.I. [2 ]
Moiseeva I.V. [2 ]
机构：
[1] Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow
[2] Kurdyumov Institute of Metallophysics, National Academy of Sciences, Kiev
来源：
Kovalev, D. Yu. | 1600年 / Allerton Press Incorporation卷 / 23期
关键词：
metal hydrides; reaction mechanism; SHS hydrogenation; time-resolved XRD;
D O I：
10.3103/S1061386214040062
中图分类号：
学科分类号：
摘要：
Reactions of SHS hydrogenation in Me-H systems (Me = Ti, Zr, Hf) were explored by time-resolved XRD. The SHS reaction yielding TiH2 was found to proceed in the following stages: α-Ti → α-Ti[H] → β-Ti[H] → δ-TiH2 (here β-Ti[H] stands for solid solution of hydrogen in β-Ti). SHS hydrogenation of Zr took place by the following scheme: α-Zr → β-Zr[H] → δ-ZrH1.5 → ɛ-ZrH2. The α-Hf → δ-HfHx transformation happened in one stage, without formation of intermediate β-Hf[H]. Our results shed new light on the kinetics and mechanism of SHS hydrogenation of metals. © 2014, Allerton Press, Inc.
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页码：198 / 202
页数：4
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