The Formation Mechanism for Dendritic Phase(s) in Batio3 Ceramcs
The formation mechanism for a dendritic phase in BaTiO3 ceramics was investigated. Results show that the needle-like Ba6Ti17O40 only appeared at sintering temperatures above the eutectic point in TiO2 excess BaTiO3. The dendritic phases in BaTiO3 only occur with the presence of both Nb 5+ dopant and an excess of TiO2. The composition of the dendritic phase is close to Ba6Ti14O40 and Ba6Ti14Nb2O39 based on EDS analysis. Both the Ba6Ti17O40 and the Ba6Ti14Nb2O39 phases are linear dielectrics with low dielectric constants of 59 and 57, respectively.
X. Xu and G. Hilmas, "The Formation Mechanism for Dendritic Phase(s) in Batio3 Ceramcs," Proceedings of the 27th International Cocoa Beach Conference on Advanced Ceramics and Composites: B (200, Cocoa Beach, FL), vol. 24, no. 4, pp. 27-33, Wiley-Blackwell, Jan 2003.
The definitive version is available at http://dx.doi.org/10.1002/9780470294826.ch5
27th International Cocoa Beach Conference on Advanced Ceramics and Composites: B (2003: Jan. 26-31, Cocoa Beach, FL)
Materials Science and Engineering
Keywords and Phrases
Dopants; Barium compounds; Composition; Dendrimers; Doping (additives); Energy dispersive spectroscopy; Eutectics; Permittivity; Sintering; Ceramic materials
International Standard Serial Number (ISSN)
Article - Conference proceedings
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