Effect of dopants on anisotropic grain growth in oxide-matrix materials

T. N. Tiegs; M. R. Snyder; F. C. Montgomery; J. L. Schroeder; D. W. Coffey

Effect of dopants on anisotropic grain growth in oxide-matrix materials

T. N. Tiegs, M. R. Snyder, F. C. Montgomery, J. L. Schroeder, D. W. Coffey

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Abstract

Anisotropic grain growth is of interest for altering the microstructure and improving the properties of oxide ceramics, such as alumina and mullite. The effect of several dopants (at levels from 0.5 to 7 wt. %) on the growth behavior was examined. Anisotropic growth was associated with the additions of SrO, MnO, NiO, Fe₂O₃ or Y₂O₃ in mullite and with Na₂O, Na₃AlF₆, or La₂O₃ in alumina. Fracture surfaces showed predominantly transgranular fracture occurs in all of the compositions indicating strong bonding between the intergranular phase and the matrix. Only modest improvements in toughness were observed.

Original language	English
Pages (from-to)	199-206
Number of pages	8
Journal	Ceramic Engineering and Science Proceedings
Volume	20
Issue number	3
State	Published - 1999
Event	Proceedings of the 1999 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - Cocoa Beach, FL, USA Duration: Jan 25 1999 → Jan 29 1999

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title = "Effect of dopants on anisotropic grain growth in oxide-matrix materials",

abstract = "Anisotropic grain growth is of interest for altering the microstructure and improving the properties of oxide ceramics, such as alumina and mullite. The effect of several dopants (at levels from 0.5 to 7 wt. %) on the growth behavior was examined. Anisotropic growth was associated with the additions of SrO, MnO, NiO, Fe2O3 or Y2O3 in mullite and with Na2O, Na3AlF6, or La2O3 in alumina. Fracture surfaces showed predominantly transgranular fracture occurs in all of the compositions indicating strong bonding between the intergranular phase and the matrix. Only modest improvements in toughness were observed.",

author = "Tiegs, {T. N.} and Snyder, {M. R.} and Montgomery, {F. C.} and Schroeder, {J. L.} and Coffey, {D. W.}",

year = "1999",

language = "English",

volume = "20",

pages = "199--206",

journal = "Ceramic Engineering and Science Proceedings",

issn = "0196-6219",

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note = "Proceedings of the 1999 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures ; Conference date: 25-01-1999 Through 29-01-1999",

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TY - JOUR

T1 - Effect of dopants on anisotropic grain growth in oxide-matrix materials

AU - Tiegs, T. N.

AU - Snyder, M. R.

AU - Montgomery, F. C.

AU - Schroeder, J. L.

AU - Coffey, D. W.

PY - 1999

Y1 - 1999

N2 - Anisotropic grain growth is of interest for altering the microstructure and improving the properties of oxide ceramics, such as alumina and mullite. The effect of several dopants (at levels from 0.5 to 7 wt. %) on the growth behavior was examined. Anisotropic growth was associated with the additions of SrO, MnO, NiO, Fe2O3 or Y2O3 in mullite and with Na2O, Na3AlF6, or La2O3 in alumina. Fracture surfaces showed predominantly transgranular fracture occurs in all of the compositions indicating strong bonding between the intergranular phase and the matrix. Only modest improvements in toughness were observed.

AB - Anisotropic grain growth is of interest for altering the microstructure and improving the properties of oxide ceramics, such as alumina and mullite. The effect of several dopants (at levels from 0.5 to 7 wt. %) on the growth behavior was examined. Anisotropic growth was associated with the additions of SrO, MnO, NiO, Fe2O3 or Y2O3 in mullite and with Na2O, Na3AlF6, or La2O3 in alumina. Fracture surfaces showed predominantly transgranular fracture occurs in all of the compositions indicating strong bonding between the intergranular phase and the matrix. Only modest improvements in toughness were observed.

UR - http://www.scopus.com/inward/record.url?scp=0033317575&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0033317575

SN - 0196-6219

VL - 20

SP - 199

EP - 206

JO - Ceramic Engineering and Science Proceedings

JF - Ceramic Engineering and Science Proceedings

IS - 3

T2 - Proceedings of the 1999 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures

Y2 - 25 January 1999 through 29 January 1999

ER -

Effect of dopants on anisotropic grain growth in oxide-matrix materials

Abstract

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