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.

引用

页码：198 / 202

页数：4

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