Effects of boron addition and intensive grinding on synthesis of anorthite ceramics

Anorthite ceramics were synthesized starting from mixtures prepared by using mechanochemical methods with boron oxide addition. The raw materials used in this study were Sivas Kaolin, calcined alumina/Al(OH) 3 and calcite. Statistical experimental design techniques (SED) were used in order to determ...

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Bibliographic Details
Published in:Ceramics international 2008-09, Vol.34 (7), p.1629-1635
Main Authors: Kavalci, Sedat, Yalamaç, Emre, Akkurt, Sedat
Format: Article
Language:English
Subjects:
A: Milling
A: Powders: Solid state reaction
Anorthite
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Statistical experimental design
Technical ceramics
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Summary:Anorthite ceramics were synthesized starting from mixtures prepared by using mechanochemical methods with boron oxide addition. The raw materials used in this study were Sivas Kaolin, calcined alumina/Al(OH) 3 and calcite. Statistical experimental design techniques (SED) were used in order to determine and analyze the more important process variables for synthesizing anorthite ceramics. Phase characterizations of synthesized powders were performed by XRD using Cu Kα radiation. Microstructural characterization was performed by SEM. The results of screening experimental design clarified that the temperature was the most important process variable. Second most important process variable was grinding speed of starting mixture which was followed by additive amount and additive type. The effect of both additive use and grinding on anorthite synthesis helped decrease the synthesis temperature down to 900 °C.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2007.07.007