TY  - JOUR
AU  - LI, Fang-Zhe
AU  - LUO, Hui-Jia-Dai
AU  - ZHANG, Meng
AU  - JI, Dong-Ning
AU  - ZHOU, Yu
AU  - KE, Hua
PY  - 2026
TI  - Preparation and Particle Size Control of Scandium-Doped Zirconia Submicron Powders via Homogeneous Co-precipitation Method
JO  - Advanced Ceramics
SN  - 1005-1198
SP  - 354
EP  - 365
VL  - 47
IS  - 4
AB  - (ZrO2)0.9(Sc2O3)0.1 (10ScSZ) is an important commercial material for intermediate-to-high temperature solid oxide fuel cells. However, most 10ScSZ powders currently prepared by the solid-state reaction method suffer from large crystallite sizes and poor particle size uniformity; therefore, developing a simple, low-cost synthesis method with controllable particle and crystallite sizes remains crucial. This paper proposes an improved homogeneous co-precipitation method. By maintaining a stable pH value in the co-precipitation environment, 10ScSZ powder with controllable grain size and particle size was prepared. The three-step transformation process of the precursor—removal of water of crystallization, combustion decomposition of organic matter, and solid-state transformation—is also investigated. The crystallite size of the as-prepared 10ScSZ powders can be adjusted over a wide range of 10.5~31.9 nm by varying the pH of the co-precipitation environment and the calcination temperature. The primary particle size is 0.40~0.70 μm, and the powders exhibit a pure cubic phase. This synthesis route can also be extended to other rare-earth doped zirconia systems.
UR  - https://doi.org/10.16253/j.cnki.37-1226/tq.2026.04.005
DO  - 10.16253/j.cnki.37-1226/tq.2026.04.005