Sinterization of Alumina and of the Alumina/Zirconia System in Microwave Ovens

Maria Zilda A.A. Maia; Ana Marly A. Maia; Valmir José da Silva; Renato Correia Santos; Gelmires de Araújo Neves; Romualdo Rodrigues Menezes; Lisiane Navarro de Lima Santana

doi:10.4028/www.scientific.net/MSF.820.341

Paper Titles

Evaluation of Mechanical Properties of Composite Materials Used in Dentistry Varying the Inorganic Composition
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Analysis of Flexural Strength of Ceramics Based on Zirconia Stabilized by Yttria with Ceramic Cover
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Phase Stability of 3Y-TSZ Ceramics after Different Surface Treatments
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Europium-Doped Hydroxyapatite: Influence of Excitation Wavelength on the Eu³⁺ Luminescence in the Hydroxyapatite
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Sinterization of Alumina and of the Alumina/Zirconia System in Microwave Ovens
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Evaluation of Organoclay Addition in Surface Modified Sintered UHMWPE Membranes for Oil Separation
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PP/EPDM Blends Compatibilized by Organically Modified Clays
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Selective Occupancy of Sites by Rare Earths in K₂Nd_(1-X)Eu_xNb₅O₁₅ Nanopowders, where X = 0, 0.0025, 0.025, 0.05 and 0.1, Prepared by Modified Polyol Method
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Changing of the Spontaneous Polarization in Niobate Nanoparticles Induced by Non Isovalent Doping
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HomeMaterials Science ForumMaterials Science Forum Vol. 820Sinterization of Alumina and of the...

Sinterization of Alumina and of the Alumina/Zirconia System in Microwave Ovens

Abstract:

Aluminum and zirconia oxides are ceramic materials widely used in the manufacturing of dental products, however, the thermal treatment stages demand high temperatures. Aiming at the reduction of the energy consumption and of the time necessary for the thermal treatments, this work intends to evaluate the influence of the microwave energy over the thermal processes of alumina substrate and of the alumina/zirconia system. The samples were made by slip-casting and then submitted to different thermal treatments. For the microwave oven, we used powers of 1.44 and 1.66 kW and heating times of 10, 15 and 20 minutes. The samples were submitted to the determination of physico-mechanical properties: flexural strength at three points, porosity and Vickers microhardness. Based on the analysis, we conclude that the microwaves energy is promising for the processing of dental ceramic, causing a significant reduction in the firing time.

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Periodical:

Materials Science Forum (Volume 820)

Pages:

341-346

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.820.341

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Online since:

June 2015

Authors:

Maria Zilda A.A. Maia*, Ana Marly A. Maia, Valmir José da Silva, Renato Correia Santos, Gelmires de Araújo Neves, Romualdo Rodrigues Menezes, Lisiane Navarro de Lima Santana

Keywords:

Alumina, Microwave Oven, Thermal Treatment, Zirconia

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