Subeutectic Densification and Second-phase Formation in Al₂O₃CaO

Editor(s)

Green, David J. and Halloran, John and Johnson, David W. and Klein, Lisa

Abstract

The early and intermediate stages of densification of alumina containing calcia were examined at subeutectic temperatures. Up to 0.15 wt% calcia causes a decrease in the densification rate; from 0.15 to 0.7 wt% calcia, the densification rate increases initially but then decreases at longer times; more than 0.75 wt% calcia leads to a monotonically decreasing densification rate. the data for materials containing more than 0.15 wt% calcia may be interpreted as a competition between enhanced subeutectic densification and the presence of densification-retarding second phases.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Aluminum Oxides; Calcium Oxides; Densification; Grain Boundaries; Powder Metallurgy; Sintering; Crystal Defects; Electron Microscopy; Eutectics; Phase Transformations; X Ray Diffraction

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1985 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 1985

Link to Full Text

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