Chemo-elastic equilibrium in nanocrystalline Pd-Au-H

被引：7

作者：

Weissmüller, J ^{[1
]}

Lang, C

Lemier, C

机构：

[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] Univ Saarlandes, Fachbereich Phys, D-6600 Saarbrucken, Germany

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 8-9期

关键词：

grain boundaries; interstitial lattice defects; phase equilibria; thermodynamics;

D O I：

10.1016/S1359-6462(01)00815-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present an experimental study of the hydrogen solubility in nanocrystalline Pd-Au. Hydrogen enrichment and depletion at grain boundaries results in a strongly size dependent interface stress, which is compensated by a pressure in the bulk. We determine the interface stress and the pressure as a function of the hydrogen concentration in the bulk from data for the macroscopic strain and for the change in lattice constant upon alloying. (C) 2001 Acm Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1899 / 1903

页数：5

共 13 条

[1]

BEHM RJ, 1982, CHEM PHYS, V78, P7486

[2]

CZICHOS H, 1989, HUTTE

[3]

Gurtin ME, 1998, PHILOS MAG A, V78, P1093, DOI 10.1080/01418619808239977

[4] GRAIN-BOUNDARY ATOMIC-STRUCTURE IN NANOCRYSTALLINE PALLADIUM FROM X-RAY ATOMIC DISTRIBUTION-FUNCTIONS [J].

LOFFLER, J ;

WEISSMULLER, J .

PHYSICAL REVIEW B, 1995, 52 (10) :7076-7093

[5]

MAELAND A, 1965, J PHYS CHEM-US, V60, P3375

[6] HYDROGEN AS A PROBE FOR THE AVERAGE THICKNESS OF A GRAIN-BOUNDARY [J].

MUTSCHELE, T ;

KIRCHHEIM, R .

SCRIPTA METALLURGICA, 1987, 21 (08) :1101-1104

[7]

Peisl H., 1978, HYDROGEN METALS, V2

[8]

SAKAMOTO Y, 1982, J LESS-COMMON MET, V88, P115, DOI 10.1016/0022-5088(82)90021-2

[9] THE SURFACE TENSION OF SOLIDS [J].

SHUTTLEWORTH, R .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1950, 63 (365) :444-457

[10] Lattice constants of solid solution microstructures:: The case of nanocrystalline Pd-H [J].

Weissmüller, J ;

Lemier, C .

PHYSICAL REVIEW LETTERS, 1999, 82 (01) :213-216

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