Acoustic emission monitoring of activation behavior of LaNi5 hydrogen storage alloy

被引：6

作者：

De Rosa, Igor Maria ^{[1
]}

Dell'Era, Alessandro ^{[2
]}

Pasquali, Mauro ^{[1
]}

Santulli, Carlo ^{[1
]}

Sarasini, Fabrizio ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Chem Engn Mat Environm, I-00184 Rome, Italy

[2] Univ Guglielmo Marconi, Dept DME, Rome, Italy

来源：

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2011年 / 12卷 / 04期

关键词：

hydrogen-absorbing materials; intermetallics; acoustic emission; ABSORPTION-DESORPTION CYCLES; LATTICE-DEFECTS; IN-SITU; MICROSTRUCTURE; DIFFRACTION; SYSTEM;

D O I：

10.1088/1468-6996/12/4/045004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The acoustic emission technique is proposed for assessing the irreversible phenomena occurring during hydrogen absorption/desorption cycling in LaNi5. In particular, we have studied, through a parametric analysis of in situ detected signals, the correlation between acoustic emission (AE) parameters and the processes occurring during the activation of an intermetallic compound. Decreases in the number and amplitude of AE signals suggest that pulverization due to hydrogen loading involves progressively smaller volumes of material as the number of cycles increases. This conclusion is confirmed by electron microscopy observations and particle size distribution measurements.

引用

页数：7

共 20 条

[1]

[Anonymous], 2003, Mater. Today, DOI [10.1016/S1369-7021(03)00922-2, DOI 10.1016/S1369-7021(03)00922-2]

[2]

ASNT, 1987, NOND TEST HDB, V5

[3] Review on hydrogen absorbing materials - structure, microstructure, and thermodynamic properties [J].

Bououdina, M ;

Grant, D ;

Walker, G .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2006, 31 (02) :177-182

[4] In-situ study of the cracking of metal hydride electrodes by acoustic emission technique [J].

Didier-Laurent, S. ;

Idrissi, H. ;

Roue, L. .

JOURNAL OF POWER SOURCES, 2008, 179 (01) :412-416

[5] Characterization of initial activation behavior for hydrogen storage alloys by acoustic emission technique [J].

Inoue, Hiroshi ;

Tsuzuki, Ryosuke ;

Nohara, Shinji ;

Iwakura, Chiaki .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 446 :681-686

[6] Lattice defects introduced during hydrogen absorption-desorption cycles and their effects on P-C characteristics in some intermetallic compounds [J].

Inui, H ;

Yamamoto, T ;

Hirota, M ;

Yamaguchi, M .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 330 :117-124

[7] Hydrogen cycling induced degradation in LaNi5-type materials [J].

Joubert, JM ;

Latroche, M ;

Cerny, R ;

Percheron-Guégan, A ;

Yvon, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 330 :208-214

[8] THE HYDROGEN ACTIVATION OF LANI5 [J].

KISI, EH ;

BUCKLEY, CE ;

GRAY, EM .

JOURNAL OF ALLOYS AND COMPOUNDS, 1992, 185 (02) :369-384

[9] ON THE NATURE OF THE ELECTROCHEMICAL CYCLING STABILITY OF NONSTOICHIOMETRIC LANI5-BASED HYDRIDE-FORMING COMPOUNDS .2. IN-SITU X-RAY-DIFFRACTOMETRY [J].

NOTTEN, PHL ;

DAAMS, JLC ;

EINERHAND, REF .

JOURNAL OF ALLOYS AND COMPOUNDS, 1994, 210 (1-2) :233-241

[10] Neutron diffraction study of the LaNi5-D system during activation [J].

Pitt, MP ;

Gray, EM ;

Kisi, EH ;

Hunter, BA .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 293 :118-123

← 1 2 →