Understanding the Oxidation Behavior of Fe/Ni/Cr and Fe/Cr/Ni Core/Alloy Nanoparticles

被引：19
作者：
Pathade, Laxmikant [1 ]
Doane, Tennyson L. [1 ]
Slaton, Rahiem Davon [1 ]
Maye, Mathew M. [1 ]
机构：
[1] Syracuse Univ, Dept Chem, Syracuse, NY 13244 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 38期
基金：
美国国家科学基金会;
关键词：
AUSTENITIC STAINLESS-STEEL; MAGNETIC NANOPARTICLES; METAL NANOPARTICLES; OXIDE NANOCRYSTALS; OPTICAL-PROPERTIES; PITTING CORROSION; FE NANOPARTICLES; CORE-SHELL; ALLOY; GROWTH;
D O I：
10.1021/acs.jpcc.6b06926
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：
In this work we describe a method to prepare core/alloy nanopartides (CA-NPs) based on transition metal alloys with tunable oxidation properties. We investigated the use of chromium and nickel carbonyl based precursors to control shell deposition and thickness at alpha-Fe cores producing Fe/Cr/Ni and Fe/Ni/Cr CA-NPs. We compared the systems by monitoring resistance to oxidation and found that it is highly dependent on the shell and alloy sequence as well as thickness, with thin Fe/Cr/Ni having the best stainless behavior. The CA-NP growth was monitored by TEM, and composition was assessed by XPS. Oxidation was quantified by both powder XRD and XPS. The results were analyzed in light of alloy miscibility and diffusion, as well as lattice strains and interfacial oxidation rates.
引用
收藏
页码：22035 / 22044
页数：10
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