Results 221 to 230 of about 6,918 (265)
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Nanostructured Hydroxyapatite by Microwave Sintering
Journal of Nanoscience and Nanotechnology, 2008In this work, nanostructured HA ceramics with dense microstructure were prepared by microwave sintering process and their microstructures were compared with the case of conventional sintering. Commercially obtained HA powder with Ca/P molar ratio of 1.67 was used as a starting material. The powder of granular type consists of nanocrystalline particles
Dong Seok, Seo +2 more
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Microwave Sintering Process Model
Journal of Microwave Power and Electromagnetic Energy, 2003In order to simulate and optimize the microwave sintering of a silicon nitride and tungsten carbide/cobalt toolbits process, a microwave sintering process model has been built. A cylindrical sintering furnace was used containing a heat insulating layer, a susceptor layer, and an alumina tube containing the green toolbit parts between parallel ...
Hu, Peng +3 more
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Temperature Measurement by Microwave Radiometry: Application to Microwave Sintering
IEEE Transactions on Instrumentation and Measurement, 2009Temperature is a key parameter in industrial manufacturing, and its control is very often directly related to the quality of the products. Microwave-assisted processing has gained worldwide acceptance in powder technologies, in particular for the sintering of ceramic parts.
Beaucamp-Ricard, C. +5 more
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Microwave Sintering of Titania
Transactions of the Indian Ceramic Society, 2005Microwave processing was employed to sinter commercial titania powder to obtain rutile as the major phase in the sintered product. About 96% of theoretical density was achieved by exposing the powder in microwave for 1 h at 1300°C. The maximum density obtained for titania ceramics sintered with identical parameters in a conventional muffle furnace was ...
S. Das +3 more
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Microwave Sintering of Ceramics
MRS Proceedings, 1988ABSTRACTTheoretical considerations regarding microwave sintering of ceramics are discussed. It is shown how the rigorous application of multiple scattering theory may permit a better understanding of this interesting process. The possibility of thermal runaway being chaotic is discussed.
Vuay K. Varadan +3 more
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Microwave sintering of ceramics
1988., IEEE MTT-S International Microwave Symposium Digest, 2003An overview of microwave sintering is presented, and the basic theory for the design of impedance applicators is derived. Examples of applicators for ribbon materials and rods are developed and sintering results are presented. The problems imposed by radiation loss and plasma breakdown are examined and their solution by use of thermally reflecting high-
M.E. Brodwin, D.L. Johnson
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Materials Letters, 1996
Abstract Class F flyash has been sintered by microwave and conventional processes. The sintering was carried out in a temperature range of 800 to 1000 °C. Densities up to 2.2 g/cm 3 , and diametral tensile strength up to 26 MPa (corresponding diametral compressive strength 78 MPa) were achieved after sintering for 10–20 min.
Y. Fang, Y. Chen, M.R. Silsbee, D.M. Roy
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Abstract Class F flyash has been sintered by microwave and conventional processes. The sintering was carried out in a temperature range of 800 to 1000 °C. Densities up to 2.2 g/cm 3 , and diametral tensile strength up to 26 MPa (corresponding diametral compressive strength 78 MPa) were achieved after sintering for 10–20 min.
Y. Fang, Y. Chen, M.R. Silsbee, D.M. Roy
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Microwave sintering of tungsten
International Journal of Refractory Metals and Hard Materials, 2009This study aims at microwave sintering of pure tungsten powder of as-received grade and tungsten powder activated by high-energy milling (HEM). Both the powder compacts are sintered under identical conditions and their sinterability is compared and analyzed for process optimization.
G. Prabhu +2 more
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Sintering of Titanium in Vacuum by Microwave Radiation
Metallurgical and Materials Transactions A, 2011The effectiveness of microwave (MW) sintering has been demonstrated on many ceramic systems, a number of metallic systems, metal-ceramic composites, but remains ambiguous for Ti powder materials. This work presents a detailed comparative study of MW and conventional sintering of Ti powder compacts in vacuum.
Luo, S. D. +3 more
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Microwave sintering of Ca0.6La0.2667TiO3 microwave dielectric ceramics
International Journal of Minerals, Metallurgy, and Materials, 2012Ca0.6La0.2667TiO3 ceramics were prepared by conventional and microwave sintering techniques and their sinterability, microstructure, and microwave dielectric properties were investigated in detail for comparison. Densified Ca0.6La0.2667TiO3 ceramics were obtained by microwave sintering at 1350°C for 30 min and by conventional sintering at 1450°C for 4 ...
Jia-mao Li, Tai Qiu
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