Degradation of Magnesium Aluminum Spinel by Lithium Fluoride Sintering Aid

The effect of LiF sintering aid on the degradation of transparent magnesium aluminate spinel during hot‐pressing was studied. LiF is used to etch spinel particles during the hot pressing process. The LiF was found to react with the aluminum in the spinel structure, thereby leaving Mg‐rich regions be...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 88; no. 5; pp. 1321 - 1322
Main Authors Villalobos, Guillermo R., Sanghera, Jasbinder S., Aggarwal, Ishwar D.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Inc 01.05.2005
Blackwell
Wiley Subscription Services, Inc
Subjects
Aluminum
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Ceramic matrix composites
Ceramic sintering
Chemical industry and chemicals
Exact sciences and technology
Hot pressing
Miscellaneous
Technical ceramics
Aluminium Magnesium Oxides Mixed
Lithium fluoride
Laser induced fluorescence
Experimental study
X ray diffraction
Oxide ceramics
Degradation
Hot pressing
Additive
Spinel
Sintering
Technical ceramics
Manufacturing
Transparent material
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Summary:The effect of LiF sintering aid on the degradation of transparent magnesium aluminate spinel during hot‐pressing was studied. LiF is used to etch spinel particles during the hot pressing process. The LiF was found to react with the aluminum in the spinel structure, thereby leaving Mg‐rich regions behind that do not sinter well and result in opaque white regions in the otherwise transparent matrix.
Bibliography:ArticleID:JACE00209
ark:/67375/WNG-2901G8LX-8
istex:4D77054879BCB3E683772DE3EC70DF852E0019A2
L. C. Klein—contributing editor
*
Member, American Ceramic Society.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2005.00209.x