Microstructure and sintering kinetics of highly reactive ZrO2-Y2O3 ceramics

M.A.C.G. van de Graaf; J.H.H. Ter Maat; A.J. Burggraaf

doi:10.1007/BF01026338

Microstructure and sintering kinetics of highly reactive ZrO₂-Y₂O₃ ceramics

M.A.C.G. van de Graaf^*, J.H.H. Ter Maat, A.J. Burggraaf

^*Corresponding author for this work

Inorganic Materials Science

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

120 Citations (Scopus)

Abstract

Ultra-fine stabilized zirconia powders, which only contain extremely small aggregates were prepared. The control of agglomerates and aggregates in these powders is of utmost importance in order to obtain highly sinter-reactive ceramics. The very small aggregates appear to be the smallest microstructural units which determine the ultimate packing situation after compaction. Resulting green microstructures and sintering behaviour were studied extensively. The sintering process is seen to proceed via several stages of micro-structural development. During the most important stage, where the ceramic material approaches full density, the observed occurrence of abnormal grain growth strongly influences the ultimate grain size. The extent of abnormal growth is highly dependent on aggregate sizes present in the starting powder.

Original language	English
Pages (from-to)	1407-1418
Number of pages	12
Journal	Journal of materials science
Volume	20
Issue number	4
DOIs	https://doi.org/10.1007/BF01026338
Publication status	Published - 1 Apr 1985

Keywords

Polymer
Grain size
Microstructure
Zirconia
Compaction

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10.1007/BF01026338

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title = "Microstructure and sintering kinetics of highly reactive ZrO2-Y2O3 ceramics",

abstract = "Ultra-fine stabilized zirconia powders, which only contain extremely small aggregates were prepared. The control of agglomerates and aggregates in these powders is of utmost importance in order to obtain highly sinter-reactive ceramics. The very small aggregates appear to be the smallest microstructural units which determine the ultimate packing situation after compaction. Resulting green microstructures and sintering behaviour were studied extensively. The sintering process is seen to proceed via several stages of micro-structural development. During the most important stage, where the ceramic material approaches full density, the observed occurrence of abnormal grain growth strongly influences the ultimate grain size. The extent of abnormal growth is highly dependent on aggregate sizes present in the starting powder.",

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AU - van de Graaf, M.A.C.G.

AU - Ter Maat, J.H.H.

AU - Burggraaf, A.J.

PY - 1985/4/1

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N2 - Ultra-fine stabilized zirconia powders, which only contain extremely small aggregates were prepared. The control of agglomerates and aggregates in these powders is of utmost importance in order to obtain highly sinter-reactive ceramics. The very small aggregates appear to be the smallest microstructural units which determine the ultimate packing situation after compaction. Resulting green microstructures and sintering behaviour were studied extensively. The sintering process is seen to proceed via several stages of micro-structural development. During the most important stage, where the ceramic material approaches full density, the observed occurrence of abnormal grain growth strongly influences the ultimate grain size. The extent of abnormal growth is highly dependent on aggregate sizes present in the starting powder.

AB - Ultra-fine stabilized zirconia powders, which only contain extremely small aggregates were prepared. The control of agglomerates and aggregates in these powders is of utmost importance in order to obtain highly sinter-reactive ceramics. The very small aggregates appear to be the smallest microstructural units which determine the ultimate packing situation after compaction. Resulting green microstructures and sintering behaviour were studied extensively. The sintering process is seen to proceed via several stages of micro-structural development. During the most important stage, where the ceramic material approaches full density, the observed occurrence of abnormal grain growth strongly influences the ultimate grain size. The extent of abnormal growth is highly dependent on aggregate sizes present in the starting powder.

KW - Polymer

KW - Grain size

KW - Microstructure

KW - Zirconia

KW - Compaction

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Microstructure and sintering kinetics of highly reactive ZrO₂-Y₂O₃ ceramics

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Keywords

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