Positron annihilation study on interaction between hydrogen and defects in AISI 304 stainless steel

被引：12

作者：

Chen, Y. Q. ^{[1
]}

Wu, Y. C. ^{[1
]}

Wang, Z. ^{[1
]}

Wang, S. J. ^{[1
]}

机构：

[1] Wuhan Univ, Dept Phys, Hubei Prov Key Lab Nucl Solid State Phys, Wuhan 430072, Peoples R China

来源：

RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 02期

基金：

中国国家自然科学基金;

关键词：

positron annihilation; coincidence doppler broadening (CDB); hydrogen; defect; stainless steel;

D O I：

10.1016/j.radphyschem.2006.03.057

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：

Interaction between hydrogen and defects in AISI 304 stainless steel was investigated by positron annihilation lifetime spectra (PALS) and coincidence Doppler broadening (CDB) measurements. PALS results show that long lifetime component tau(2) is about 260-270 ps, and does not change with current density, which is ascribed to the formation of three-dimensional vacancy cluster of 5-7 vacancies. Furthermore, the CDB ratio curves show that an obvious peak appears in the high-momentum region after hydrogen charging, and the peak site does not vary with current density. The mechanism of interaction between hydrogen with defects is discussed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：308 / 312

页数：5

共 18 条

[1] CHARACTERIZATION OF HYDROGEN-INDUCED DEFECTS IN IRON BY POSITRON-ANNIHILATION [J].

CAO, BS ;

ICHINOSE, H ;

YAMAMOTO, S ;

LI, H ;

ISHIDA, Y .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1993, 67 (05) :1177-1186

[2] Hydrogen-induced defects in bulk niobium -: art. no. 224106 [J].

Cízek, J ;

Procházka, I ;

Becvár, F ;

Kuzel, R ;

Cieslar, M ;

Brauer, G ;

Anwand, W ;

Kirchheim, R ;

Pundt, A .

PHYSICAL REVIEW B, 2004, 69 (22) :224106-1

[3]

Cizek J, 2004, MATER SCI FORUM, V445-6, P63

[4]

DUPAQUIER A, 1995, POSITRON SPECTROSCOP

[5] The recovery of gas-vacancy-complexes in Fe irradiated with high energy H or He ions [J].

Ishizaki, T ;

Xu, Q ;

Yoshiie, T ;

Nagata, S .

MATERIALS TRANSACTIONS, 2004, 45 (01) :9-12

[6]

Johnston I. A., 1970, Proceedings of the Royal Society of London, Series A (Mathematical and Physical Sciences), V315, P231, DOI 10.1098/rspa.1970.0039

[7] TEM and PAS study of neutron irradiated VVER-type RPV steels [J].

Kocík, J ;

Keilová, E ;

Cízek, J ;

Procházka, I .

JOURNAL OF NUCLEAR MATERIALS, 2002, 303 (01) :52-64

[8] POSITRON-ANNIHILATION MOMENTUM PROFILES IN ALUMINUM - CORE CONTRIBUTION AND INDEPENDENT-PARTICLE MODEL [J].

LYNN, KG ;

MACDONALD, JR ;

BOIE, RA ;

FELDMAN, LC ;

GABBE, JD ;

ROBBINS, MF ;

BONDERUP, E ;

GOLOVCHENKO, J .

PHYSICAL REVIEW LETTERS, 1977, 38 (05) :241-244

[9] VACANCIES STUDIED BY POSITRON-ANNIHILATION WITH HIGH-MOMENTUM CORE ELECTRONS [J].

LYNN, KG ;

DICKMAN, JE ;

BROWN, WL ;

ROBBINS, MF ;

BONDERUP, E .

PHYSICAL REVIEW B, 1979, 20 (09) :3566-3572

[10] Positron-lifetime study of electrically hydrogen charged Ni, austenitic stainless steel and Fe [J].

Ohkubo, H ;

Sugiyama, S ;

Fukuzato, K ;

Takenaka, M ;

Tsukuda, N ;

Kuramoto, E .

JOURNAL OF NUCLEAR MATERIALS, 2000, 283 :858-862

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