X-ray diffraction reinvestigation of the Ni-Pt phase diagram

被引：15

作者：

Popov, Anton A. ^{[1
]}

Varygin, Andrey D. ^{[1
,2
]}

Plyusnin, Pavel E. ^{[1
]}

Sharafutdinov, Marat R. ^{[3
]}

V. Korenev, Sergey ^{[1
]}

Serkova, Alexandra N. ^{[4
]}

V. Shubin, Yury ^{[1
]}

机构：

[1] Nikolaev Inst Inorgan Chem, Lavrenteva Ave 3, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Str Pirogova 2, Novosibirsk 630090, Russia

[3] Inst Solid State Chem & Mechanochem, Str Kutateladze 18, Novosibirsk 630128, Russia

[4] Boreskov Inst Catalysis, Lavrenteva Ave 5, Novosibirsk 630090, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 891卷

基金：

俄罗斯基础研究基金会;

关键词：

Nickel; Platinum; Disorder-order transformations; Phase diagram; Experimental X-ray study; OXYGEN REDUCTION; NANOPARTICLES; ALLOY; CONVERSION; CATALYSTS; PROGRAM;

D O I：

10.1016/j.jallcom.2021.161974

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Ni-Pt phase diagram was corrected in the range of 15-85 at.% Pt and in the temperature range of 400-525 degrees C using powder X-ray diffraction data. To reduce the time required to achieve the equilibrium state, Ni-Pt alloys, consisting of 80-140 nm nanocrystalline particles (nanoalloys) were used as initial samples. The nanoalloys were synthesized by thermolysis of specially prepared multicomponent precursors. Phase transformations in the system at high temperatures were studied in situ by X-ray diffraction. The boundary positions of Ni1-xPtx (A1), Ni3Pt (L1(2)), NiPt (L1(0)), NiPt3 (L1(2)) single-phase regions were corrected. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：10

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