摘要
Zirconia aqueous slurry was prepared with fine zirconia powder. Injection process for making zirconia fiber was demonstrated, including preparation of aqueous slurry, injection of slurry, fiber setting in acetone, and fiber firing. The principle of the process was discussed. The effects of solid loading in the zirconia slurry, addition of dispersant in the slurry, and ball milling time on the rheological properties of the slurry, especially yield stress, were illustrated. The role of acetone as curing agent was discussed. Zirconia poly-crystalline fiber with its density of 6. 05 g · cm^-3 was obtained after sintering at 1 530 ℃ for 5 h. Microstructure of the sintered zirconia fiber was investigated.
Zirconia aqueous slurry was prepared with fine zirconia powder. Injection process for making zirconia fiber was demonstrated, including preparation of aqueous slurry, injection of slurry, fiber setting in acetone, and fiber firing. The principle of the process was discussed. The effects of solid loading in the zirconia slurry, addition of dispersant in the slurry, and ball milling time on the rheological properties of the slurry, especially yield stress, were illustrated. The role of acetone as curing agent was discussed. Zirconia poly-crystalline fiber with its density of 6. 05 g · cm^-3 was obtained after sintering at 1 530 ℃ for 5 h. Microstructure of the sintered zirconia fiber was investigated.
