Solgel processing and crystallization of yttrium aluminosilicates

James C. Walck; Carlo G. Pantano

doi:10.1016/0022-3093(90)90257-M

Solgel processing and crystallization of yttrium aluminosilicates

James C. Walck, Carlo G. Pantano

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

9 Scopus citations

Abstract

Glass in the yttria-alumina-silica system was synthesized using solgel techniques. Crystallization behavior of the gel and the glass was examined using variable heating rate data obtained by differential thermal analysis (DTA). The reaction rate constants for crystallization followed an Arrhenius temperature dependence, and the activation energies for crystallization were readily determined. Surface nucleation/crystallization dominated but no appreciable difference in crystallization between the gel and glass powders was evident. It was verified that, in this system, densification of the gel occurred before the onset of crystallization. Isothermal heat treatment of the gels and glasses produced 3Al₂O₃·2SiO₂ and various polymorphs of Y₂O₃·2SiO₂.

Original language	English (US)
Pages (from-to)	145-154
Number of pages	10
Journal	Journal of Non-Crystalline Solids
Volume	124
Issue number	2-3
DOIs	https://doi.org/10.1016/0022-3093(90)90257-M
State	Published - Oct 1990

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/0022-3093(90)90257-M

Fingerprint Dive into the research topics of 'Solgel processing and crystallization of yttrium aluminosilicates'. Together they form a unique fingerprint.

Cite this

@article{a418dce8611d4d789ac62f743a379d34,

title = "Solgel processing and crystallization of yttrium aluminosilicates",

abstract = "Glass in the yttria-alumina-silica system was synthesized using solgel techniques. Crystallization behavior of the gel and the glass was examined using variable heating rate data obtained by differential thermal analysis (DTA). The reaction rate constants for crystallization followed an Arrhenius temperature dependence, and the activation energies for crystallization were readily determined. Surface nucleation/crystallization dominated but no appreciable difference in crystallization between the gel and glass powders was evident. It was verified that, in this system, densification of the gel occurred before the onset of crystallization. Isothermal heat treatment of the gels and glasses produced 3Al2O3·2SiO2 and various polymorphs of Y2O3·2SiO2.",

author = "Walck, {James C.} and Pantano, {Carlo G.}",

year = "1990",

month = oct,

doi = "10.1016/0022-3093(90)90257-M",

language = "English (US)",

volume = "124",

pages = "145--154",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

number = "2-3",

}

TY - JOUR

T1 - Solgel processing and crystallization of yttrium aluminosilicates

AU - Walck, James C.

AU - Pantano, Carlo G.

PY - 1990/10

Y1 - 1990/10

N2 - Glass in the yttria-alumina-silica system was synthesized using solgel techniques. Crystallization behavior of the gel and the glass was examined using variable heating rate data obtained by differential thermal analysis (DTA). The reaction rate constants for crystallization followed an Arrhenius temperature dependence, and the activation energies for crystallization were readily determined. Surface nucleation/crystallization dominated but no appreciable difference in crystallization between the gel and glass powders was evident. It was verified that, in this system, densification of the gel occurred before the onset of crystallization. Isothermal heat treatment of the gels and glasses produced 3Al2O3·2SiO2 and various polymorphs of Y2O3·2SiO2.

AB - Glass in the yttria-alumina-silica system was synthesized using solgel techniques. Crystallization behavior of the gel and the glass was examined using variable heating rate data obtained by differential thermal analysis (DTA). The reaction rate constants for crystallization followed an Arrhenius temperature dependence, and the activation energies for crystallization were readily determined. Surface nucleation/crystallization dominated but no appreciable difference in crystallization between the gel and glass powders was evident. It was verified that, in this system, densification of the gel occurred before the onset of crystallization. Isothermal heat treatment of the gels and glasses produced 3Al2O3·2SiO2 and various polymorphs of Y2O3·2SiO2.

UR - http://www.scopus.com/inward/record.url?scp=0025508910&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025508910&partnerID=8YFLogxK

U2 - 10.1016/0022-3093(90)90257-M

DO - 10.1016/0022-3093(90)90257-M

M3 - Article

AN - SCOPUS:0025508910

VL - 124

SP - 145

EP - 154

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

IS - 2-3

ER -