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As a consequence, new ceramic properties can be envisioned.
In its physicochemical characteristics, this ceramic can be used as a solid electrolyte of intermediate-temperature fuel cells.
Open accessJournal ArticleDOI
Joseph L. Katz, Cheng-Hung Hung 
01 Jan 1991
18 Citations
These results suggest that an electric field can be successfully used as a control variable in the formation of ceramic oxide powders.
The ceramic materials studied can be used as solid-electrolyte sensors.
The conductivity of the glass–ceramic is higher in humidified air than in dry air, consistent with proton conduction.
The sealing process of the glass–ceramic was optimized and joined ceramic/seal/metal samples were morphologically characterized and tested for 400 h in air atmosphere followed by 200 h in H2–3H2O atmosphere at the fuel-cell operating temperature of 800 ◦ C. The study showed that the use of the glass–ceramic was successful in joining the ceramic electrolyte to the metallic interconnect and in preventing adverse corrosion effects at the interface.
Journal ArticleDOI
Otto J. Gregory, Tao You 
63 Citations
Based on these results, a versatile ceramic sensor system has been envisioned where a ceramic thermocouple and strain sensor can be combined to yield a multifunctional ceramic sensor array.
The resulting α-cordierite glass-ceramic coatings had a good wettability and adhesion with the porous ceramic substrate.
Overall, a high-density Y2O3 ceramic was found, which retained its initial surface roughness regardless of plasma exposure time, with an ideal microstructure for use as a plasma-resistant ceramic material that can be used as the inner ceramic components in the plasma etching equipment.
The procedure has exciting implications for the miniaturization of ceramic circuits and for the fabrication of solid oxide fuel cells, ordered ceramic composites and small monolithic ceramic components of complex shape.

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The grain size of alumina increases significantly after traditional sintering from the powder. Research indicates that the grain growth behavior in alumina compacts during sintering falls into two distinct regions. In the region where the porosity remains interconnected, grain growth is negligible; however, when the continuous pore network collapses into isolated pores, grains grow rapidly. This transition in grain growth behavior is observed at around 90% of theoretical density. Additionally, the final grain sizes of alumina can increase after post-HIP treatment, depending on the HIPing temperature or presintering temperature, with maximal strength reaching about 650 MPa when the grain size is around 1 μm.
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