Free volume in nanostructured Ni

被引：81

作者：

Van Petegem, S

Dalla Torre, F

Segers, D

Van Swygenhoven, H

机构：

[1] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

[2] Paul Scherrer Inst, GFA, ASQ, CH-5232 Villigen, Switzerland

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 01期

关键词：

nanocrystalline Ni; positron annihilation; free volume; nanovoids;

D O I：

10.1016/S1359-6462(02)00322-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The free volume in nanostructured Ni, synthesized by different techniques, was measured by electron microscopy and positron lifetime spectroscopy. Even in the fully dense samples 1-2 nm sized pores as well as smaller nanovoids were observed indicating that these nanovoids are an intrinsic property of the microstructure of nanostructured materials. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：17 / 22

页数：6

共 22 条

[1] NUCLEATION AND GROWTH OF HELIUM BUBBLES IN NICKEL STUDIED BY POSITRON-ANNIHILATION SPECTROSCOPY [J].

AMARENDRA, G ;

VISWANATHAN, B ;

BHARATHI, A ;

GOPINATHAN, KP .

PHYSICAL REVIEW B, 1992, 45 (18) :10231-10241

[2] Nanocrystalline electrodeposited Ni: microstructure and tensile properties [J].

Dalla Torre, F ;

Van Swygenhoven, H ;

Victoria, M .

ACTA MATERIALIA, 2002, 50 (15) :3957-3970

[3]

Hautojarvi P, 1995, P INT SCH PHYS, V125, P491

[4] Thermal stability of submicron grained copper and nickel [J].

Islamgaliev, RK ;

Chmelik, F ;

Kuzel, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 237 (01) :43-51

[5] CALCUL1TONS OF SMALL VACANCY AND INTERSTITIAL CLUSTERS FOR AN FCC LATTICE [J].

JOHNSON, RA .

PHYSICAL REVIEW, 1966, 152 (02) :629-&

[6] Microcomputer program for analysis of positron annihilation lifetime spectra [J].

Kansy, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 374 (02) :235-244

[7] Estimating grain-size distributions in nanocrystalline materials from X-ray diffraction profile analysis [J].

Krill, CE ;

Birringer, R .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1998, 77 (03) :621-640

[8] Monte-Carlo simulation of texture and microstructure development in nanocrystalline electrodeposits [J].

Li, H ;

Czerwinski, F ;

Szpunar, JA .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :673-676

[9]

MacKenzie K., 1983, POSITRON SOLID STATE, P196

[10]

MERCHANT HD, 1995, P TMS M DEF STRUCT M, P1

← 1 2 3 →