Search Results - "Francis, John S.C."

Field-assisted sintering of undoped BaTiO3: Microstructure evolution and dielectric permittivity by M’Peko, Jean-Claude, Francis, John. S.C., Raj, Rishi

“…We report, for first time, how electric fields influence the sintering of undoped BaTiO3, a ferroelectric material, and how this process affects the…”
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Field assisted and flash sintering of alumina and its relationship to conductivity and MgO-doping by Cologna, Marco, Francis, John S.C., Raj, Rishi

“…We show that flash-sintering in MgO-doped alumina is accompanied by a sharp increase in electrical conductivity. Experiments that measure conductivity in fully…”
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Flash-Sinterforging of Nanograin Zirconia: Field Assisted Sintering and Superplasticity by Francis, John S.C., Raj, Rishi

“…We report on the influence of a uniaxial applied stress on flash‐sintering and field assisted superplastic behavior of cylindrical powder preforms of 3 mol%…”
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Flash Sintering of Anode-Electrolyte Multilayers for SOFC Applications by Francis, John S. C., Cologna, Marco, Montinaro, Dario, Raj, Rishi

“…We show that multilayer green tapes constituted from sandwiched layers of NiO–zirconia anode and cubic zirconia electrolyte can be sintered below 1000°C in a…”
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Particle size effects in flash sintering by Francis, John S.C., Cologna, Marco, Raj, Rishi

“…The study of 3mol% yttria stabilized zirconia (3YSZ) with different particle sizes provides new insights into flash sintering. Four powders, all with the same…”
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Influence of the Field and the Current Limit on Flash Sintering at Isothermal Furnace Temperatures by Francis, John S. C., Raj, Rishi

“…We report, for the first time, the observation of an incubation time for the onset of flash sintering in experiments carried out at isothermal furnace…”
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Influence of Externally Imposed and Internally Generated Electrical Fields on Grain Growth, Diffusional Creep, Sintering and Related Phenomena in Ceramics by Raj, Rishi, Cologna, Marco, Francis, John S. C.

“…Microwaves and spark plasma sintering (SPS) enhance sinterability. Simple electrical fields, applied by means of a pair of electrodes to bare specimens, have…”
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Emergence and Extinction of a New Phase During On-Off Experiments Related to Flash Sintering of 3YSZ by Lebrun, Jean-Marie, Morrissey, Timothy G., Francis, John S. C., Seymour, Kevin C., Kriven, Waltraud M., Raj, Rishi

“…The flash phenomenon occurs when oxide ceramics are heated above a threshold temperature under an applied electric field. It is defined as an abrupt increase…”
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Defect Structure of Flash-Sintered Strontium Titanate by Karakuscu, Aylin, Cologna, Marco, Yarotski, Dmitry, Won, Jonghan, Francis, John S. C., Raj, Rishi, Uberuaga, Blas P.

“…Flash sintering of strontium titanate (SrTiO3) is studied at different applied fields to understand its effect on density and grain growth. In particular, the…”
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