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Microwave Pyrolysis of Emulsified Ceramic Precursor Compounds

Title data

Willert-Porada, Monika ; Dennhöfer, S. ; Hachmeister, D.:
Microwave Pyrolysis of Emulsified Ceramic Precursor Compounds.
In: MRS Proceedings. Vol. 347 (January 1994) . - pp. 571-578.
ISSN 1946-4274
DOI: https://doi.org/10.1557/PROC-347-571

Official URL: Volltext

Abstract in another language

Application of paraffin as a MW-transparent matrix for microwave pyrolysis of metalorganic compounds enables synthesis of large quantities of nanosized powders with excellent storability and packing behavior. Fully crystalline, nanosized t-ZrO₂ powders with specific surface area > 200 m²g⁻¹ are obtained from Zr-alcoholate, and alumina powders with > 500 m²g⁻¹ from Al-alcoholates. Some differences exist between microwave pyrolysis and conventional pyrolysis of such mixtures. Powders from microwave pyrolysis transform at lower calcination temperature to α-A1₂O₃ and exhibit after calcination a more homogeneous morphology as compared to powders from conventional pyrolysis. Furthermore, a different composition of the volatile pyrolysis products is found. t-ZrO₂ powder from the microwave processing route exhibits an increased stability towards transformation to monoclinic ZrO₂ as well as smaller initial grain sizes than a conventionally synthesized powder.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Ehemalige Professoren > Chair Materials Processing - Univ.-Prof. Dr. Monika Willert-Porada
Faculties
Faculties > Faculty of Engineering Science > Ehemalige Professoren
Result of work at the UBT: No
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 24 Aug 2017 06:54
Last Modified: 24 Aug 2017 06:54
URI: https://eref.uni-bayreuth.de/id/eprint/11813