Influence of Processing Techniques on the Surface Microstructure of V85Ni15 Membrane Alloy

被引：2

作者：

Sipatov, I. S. ^{[1
]}

Sidorov, N. I. ^{[1
]}

Petrova, S. A. ^{[1
]}

Shubin, A. B. ^{[1
]}

Pastukhov, E. A. ^{[1
]}

Fetisov, A. V. ^{[1
]}

Esin, A. A. ^{[2
]}

Vostryakov, A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met, Ural Branch, St Amundsen 101, Ekaterinburg 620016, Russia

[2] Ural Fed Univ, St Mira 19, Ekaterinburg 620000, Russia

来源：

INORGANIC MATERIALS | 2018年 / 54卷 / 07期

关键词：

membrane alloy; V85Ni15; ion etching; electrolytic etching; surface layers; HYDROGEN; PURIFICATION; METALS;

D O I：

10.1134/S0020168518070178

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Vanadium-based alloys with a BCC structure are considered to be an alternative to palladium alloys for hydrogen purification. Since the performance of membranes is influenced by not only their bulk characteristics but also their surface condition, we have investigated the effect of different surface preparation techniques (abrasive grinding and polishing, electrolytic polishing, and ion etching) on the surface microstructure of V85Ni15 membrane alloy using X-ray photoelectron spectroscopy. After electrolytic polishing and ion etching, we observed an increase in the percentages of vanadium and nickel metals in the surface layer of the alloy in comparison with its state after abrasive polishing. Such changes are expected to be favorable for an increase in the rate of hydrogen dissociation and recombination on the surface of the membrane material, eventually improving hydrogen transport efficiency.

引用

页码：645 / 651

页数：7

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