Titre du document / Document title

Studies of defect behavior in large-grain, polycrystalline ice using synchrotron X-ray topography

Auteur(s) / Author(s)

DUDLEY M. ⁽¹⁾ ; FUPING LIU ; BAKER I. ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ SUNY Stony Brook, dep. materials sci. eng., Stony Brook NY 11794-2275, ETATS-UNIS

Résumé / Abstract

Synchrotron White Beam X-ray Topography (SWBXT) has been used to conduct in situ, low temperature studies of the behavior of defects introduced into large-grain, polycrystalline ice of very low «as-grown» defect density. The generation of faulted and unfaulted interstitial dislocation loops as a function of imposed temperature changes was observed. Variations in the distribution of these loops in the vicinity of grain boundaries are discussed in the context of diffusion mobilities on the basal plane and the relative orientation between the basal plane and the grain boundary plane. Dislocation generation mechanisms under applied compressive stresses were also investigated in situ using a specially-designed compression stage

Revue / Journal Title

Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals    ISSN  1058-725X 

Source / Source

Congrès
International conference on the chemistry of the organic solid state N^o11, Ramat Rachel , ISRAEL (04/07/1993)
1994, vol. 240 (16 ref.), pp. 73-80

Langue / Language

Anglais

Editeur / Publisher

Gordon and Breach, Philadelphia, PA, ETATS-UNIS  (1992-2002) (Revue)

Mots-clés anglais / English Keywords

Experimental study

;

Ice

;

Polycrystals

;

X-ray topography

;

Synchrotron radiation

;

Dislocation loops

;

Grain boundaries

;

Dislocation nucleation

;

Compressive stress

;

Czochralski method

;

Thermal stresses

;

Mots-clés français / French Keywords

Etude expérimentale

;

Glace

;

Polycristal

;

Topographie RX

;

Rayonnement synchrotron

;

Boucle dislocation

;

Joint grain

;

Germination dislocation

;

Contrainte compression

;

Méthode Czochralski

;

Contrainte thermique

;

Mots-clés espagnols / Spanish Keywords

Germinación dílocación

;

Tensión compresión

;

Localisation / Location

INIST-CNRS, Cote INIST : 12857, 35400004188158.0080