Enhanced analysis of nanoporous gold by atom probe tomography

被引：43

作者：

El-Zoka, A. A. ^{[1
]}

Langelier, B. ^{[2
]}

Botton, G. A. ^{[2
]}

Newman, R. C. ^{[1
]}

机构：

[1] Univ Toronto, Dept Chem Engn & Appl Chem, 200 Coll St, Toronto, ON M5S 3E5, Canada

[2] McMaster Univ, Dept Mat Sci & Engn, 1280 Main St W, Hamilton, ON, Canada

来源：

MATERIALS CHARACTERIZATION | 2017年 / 128卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Dealloying; Nanoporous gold; Atom probe tomography; LOCAL MAGNIFICATION; ELECTRON-MICROSCOPY; CATALYST; SCALE; HYDROGENATION; DISSOLUTION; FABRICATION; EVOLUTION; OVERLAPS; ALLOYS;

D O I：

10.1016/j.matchar.2017.03.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atom probe tomography (APT) analysis on nanoporous materials is typically a difficult task, owing to their inferior mechanical properties and their complex field evaporation behaviour, compared with solid consolidated materials. A method for pore infiltration by electrodeposition, detailed in this study, makes it possible to prepare APT samples of nanoporous gold (NPG) using conventional FIB processes, and obtain APT data of good quality with high yield. APT analysis of the NPG material, produced by dealloying, reveals detailed compositional variation within the structures of the nanoscale ligaments. Profiles of the ligaments show exteriors rich in Au, with Ag-rich cores that are very close to the original alloy composition. With this approach the extended analysis into NPG and other nanoporous materials becomes practical, using as a foundation for future work the sample preparation and analysis methodology of this study. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：269 / 277

页数：9

共 39 条

[1] Relationship between the parting limit for de-alloying and a particular geometric high-density site percolation threshold [J].

Artymowicz, D. M. ;

Erlebacher, J. ;

Newman, R. C. .

PHILOSOPHICAL MAGAZINE, 2009, 89 (21) :1663-1693

[2] A model accounting for spatial overlaps in 3D atom-probe microscopy [J].

Blavette, D ;

Vurpillot, F ;

Pareige, P ;

Menand, A .

ULTRAMICROSCOPY, 2001, 89 (1-3) :145-153

[3] THE TOMOGRAPHIC ATOM-PROBE - A QUANTITATIVE 3-DIMENSIONAL NANOANALYTICAL INSTRUMENT ON AN ATOMIC-SCALE [J].

BLAVETTE, D ;

DECONIHOUT, B ;

BOSTEL, A ;

SARRAU, JM ;

BOUET, M ;

MENAND, A .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1993, 64 (10) :2911-2919

[4] INSITU ATOMIC FORCE MICROSCOPY OF UNDERPOTENTIAL DEPOSITION OF AG ON AU(111) [J].

CHEN, CH ;

VESECKY, SM ;

GEWIRTH, AA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (02) :451-458

[5] In situ imaging of dealloying during nanoporous gold formation by transmission X-ray microscopy [J].

Chen-Wiegart, Yu-chen Karen ;

Wang, Steve ;

Lee, Wah-Keat ;

McNulty, Ian ;

Voorhees, Peter W. ;

Dunand, David C. .

ACTA MATERIALIA, 2013, 61 (04) :1118-1125

[6] Structural evolution of nanoporous gold during thermal coarsening [J].

Chen-Wiegart, Yu-chen Karen ;

Wang, Steve ;

Chu, Yong S. ;

Liu, Wenjun ;

McNulty, Ian ;

Voorhees, Peter W. ;

Dunand, David C. .

ACTA MATERIALIA, 2012, 60 (12) :4972-4981

[7] An improved reconstruction procedure for the correction of local magnification effects in three-dimensional atom-probe [J].

De Geuser, F. ;

Lefebvre, W. ;

Danoix, F. ;

Vurpillot, F. ;

Forbord, B. ;

Blavette, D. .

SURFACE AND INTERFACE ANALYSIS, 2007, 39 (2-3) :268-272

[8]

Erlebacher J, 2012, RSC NANOSCI NANOTECH, P11

[9] Pattern formation during dealloying [J].

Erlebacher, J ;

Sieradzki, K .

SCRIPTA MATERIALIA, 2003, 49 (10) :991-996

[10] Hard Materials with Tunable Porosity [J].

Erlebacher, Jonah ;

Seshadri, Ram .

MRS BULLETIN, 2009, 34 (08) :561-568

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