Preparation of Nano-Al2O3-Coated ZrO2 Modified by Silane Coupling Agent
Core-shell nano-Al2O3-coated ZrO2 materials were prepared via a liquid co-deposition method using ZrO2 as cores. Surface of ZrO2 was modified by silane coupling agent. The mechanism of A-151[CH2=CH-Si-(OC2H5)3] was studied under the condition of HAc. The composite powders were characterized by FT-IR, TEM, EDS and SEM. TEM observation confirmed that amorphous Al2O3 layer deposited on the surface of ZrO2 and the thickness of the Al2O3 coating ranged from 5 to 10 nm. After sintered at 1650°C for 10 h, the size distribution narrowed down and the compactness of composite sintered body was better in comparison with pure zirconia.
Zhengyi Jiang, Jingtao Han and Xianghua Liu
R. R. Tian et al., "Preparation of Nano-Al2O3-Coated ZrO2 Modified by Silane Coupling Agent", Advanced Materials Research, Vols. 152-153, pp. 648-652, 2011