Faceting of the interface between Al<inf>2</inf>O<inf>3</inf> and anorthite glass

M. P. Mallamaci; C. Barry Carter

doi:10.1016/S1359-6454(97)00463-1

Faceting of the interface between Al<inf>2</inf>O<inf>3</inf> and anorthite glass

M. P. Mallamaci
, C. Barry Carter

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The {101̄0} and {112̄0} Al2O3 surfaces have been equilibrated in contact with anorthite liquid at 1600°C. The structure of the resulting Al2O3/glass interfaces has been characterized using transmission electron microscopy. Both interfaces were unstable in the presence of the liquid and reconstructed to give regular arrays of facets. The (10̄0) interface developed (101̄1) and (1̄012) facets while the (112̄0) interface developed {hh2̄h̄3} facets. It is proposed that the (101̄0) glass/crystal interface is thermodynamically stable, but that the (112̄0) interface facets due to interface-step migration. The microstructure thus shows that both the crystallography and the anisotropic interface energies are important in determining the wetting/ dewetting behavior of glass on Al2O3. © 1998 Acta Metallurgica Inc.

Original language	English
Pages (from-to)	2895-2907
Number of pages	13
Journal	Acta Materialia
Volume	46
Issue number	8
DOIs	https://doi.org/10.1016/S1359-6454(97)00463-1
State	Published - May 1 1998
Externally published	Yes

Access to Document

10.1016/S1359-6454(97)00463-1

Cite this

@article{b415b6604093479fae91b07ad5eb1c34,

title = "Faceting of the interface between Al2O3 and anorthite glass",

abstract = "The \{10{\=1}0\} and \{11{\=2}0\} Al2O3 surfaces have been equilibrated in contact with anorthite liquid at 1600°C. The structure of the resulting Al2O3/glass interfaces has been characterized using transmission electron microscopy. Both interfaces were unstable in the presence of the liquid and reconstructed to give regular arrays of facets. The (1{\=0}0) interface developed (10{\=1}1) and ({\=1}012) facets while the (11{\=2}0) interface developed \{hh{\=2}{\=h}3\} facets. It is proposed that the (10{\=1}0) glass/crystal interface is thermodynamically stable, but that the (11{\=2}0) interface facets due to interface-step migration. The microstructure thus shows that both the crystallography and the anisotropic interface energies are important in determining the wetting/ dewetting behavior of glass on Al2O3. {\textcopyright} 1998 Acta Metallurgica Inc.",

author = "Mallamaci, \{M. P.\} and Carter, \{C. Barry\}",

year = "1998",

month = may,

day = "1",

doi = "10.1016/S1359-6454(97)00463-1",

language = "English",

volume = "46",

pages = "2895--2907",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Acta Materialia Inc",

number = "8",

}

TY - JOUR

T1 - Faceting of the interface between Al2O3 and anorthite glass

AU - Mallamaci, M. P.

AU - Carter, C. Barry

PY - 1998/5/1

Y1 - 1998/5/1

N2 - The {101̄0} and {112̄0} Al2O3 surfaces have been equilibrated in contact with anorthite liquid at 1600°C. The structure of the resulting Al2O3/glass interfaces has been characterized using transmission electron microscopy. Both interfaces were unstable in the presence of the liquid and reconstructed to give regular arrays of facets. The (10̄0) interface developed (101̄1) and (1̄012) facets while the (112̄0) interface developed {hh2̄h̄3} facets. It is proposed that the (101̄0) glass/crystal interface is thermodynamically stable, but that the (112̄0) interface facets due to interface-step migration. The microstructure thus shows that both the crystallography and the anisotropic interface energies are important in determining the wetting/ dewetting behavior of glass on Al2O3. © 1998 Acta Metallurgica Inc.

AB - The {101̄0} and {112̄0} Al2O3 surfaces have been equilibrated in contact with anorthite liquid at 1600°C. The structure of the resulting Al2O3/glass interfaces has been characterized using transmission electron microscopy. Both interfaces were unstable in the presence of the liquid and reconstructed to give regular arrays of facets. The (10̄0) interface developed (101̄1) and (1̄012) facets while the (112̄0) interface developed {hh2̄h̄3} facets. It is proposed that the (101̄0) glass/crystal interface is thermodynamically stable, but that the (112̄0) interface facets due to interface-step migration. The microstructure thus shows that both the crystallography and the anisotropic interface energies are important in determining the wetting/ dewetting behavior of glass on Al2O3. © 1998 Acta Metallurgica Inc.

UR - https://www.scopus.com/pages/publications/0032058099

U2 - 10.1016/S1359-6454(97)00463-1

DO - 10.1016/S1359-6454(97)00463-1

M3 - Article

SN - 1359-6454

VL - 46

SP - 2895

EP - 2907

JO - Acta Materialia

JF - Acta Materialia

IS - 8

ER -

Faceting of the interface between Al<inf>2</inf>O<inf>3</inf> and anorthite glass

Abstract

Access to Document

Fingerprint

Cite this