Materials Chemistry
Forming of Self-Sustaining Ce0.9Gd0.1O1.95 Film by Aqueous Tape Casting Method
2021 Volume 62 Issue 6 Pages 770-773
Details
2021 Volume 62 Issue 6 Pages 770-773
Self-sustaining Ce0.9Gd0.1O1.95 (GDC) film was fabricated by aqueous tape casting method. An aqueous tape casting of slurry was performed using poly acrylic acid (PAA) as dispersant, poly carboxylate ammonium (PCA) as binder, poly ethylene glycol (PEG) as plasticize, and deionized water as solvent. The rheology of the slurries was evaluated with cone-plate viscometer. The conditions for preparing stable slurries were studied, regarding with solid concentration and ball-milling period, and were optimized by viscosity measurements and aging experiments. Green tapes with thickness in the range of 65 to 130 µm were prepared by conditions; solid concentration of 25–26 vol% and gate height of 0.2–0.3 mm with moving rate of 45 cm min−1. Conventional sintering techniques were available for densification, and semi-transparent GDC film of 47–95 µm thickness was successfully fabricated by heating a green sheet at 1500°C in air.
This Paper was Originally Published in Japanese in J. Soc. Mater. Sci., Japan 68 (2019) 543–548. The caption is slightly changed.
