摘要
This study is aiming at controlling the microstructure of plasma sprayed Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite coatings using freeze granulated powders. As sprayed and sintered Al<sub>2</sub>O<sub>3</sub> + 3wt%TiO<sub>2</sub> powders were air plasma sprayed with industry process parameters and compared with a commercial powder. The resulting coatings were investigated with respect to powder flowability, porosity and microstructure of the granules. The results showed that microstructure and melting fraction in the coatings could be tailored with the freeze granulation process and heat treatment conditions.
This study is aiming at controlling the microstructure of plasma sprayed Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite coatings using freeze granulated powders. As sprayed and sintered Al<sub>2</sub>O<sub>3</sub> + 3wt%TiO<sub>2</sub> powders were air plasma sprayed with industry process parameters and compared with a commercial powder. The resulting coatings were investigated with respect to powder flowability, porosity and microstructure of the granules. The results showed that microstructure and melting fraction in the coatings could be tailored with the freeze granulation process and heat treatment conditions.
作者
Yiming Yao
Ola Lyckfeldt
Aurélien Tricoire
Aurélien Tricoire
Yiming Yao;Ola Lyckfeldt;Aurélien Tricoire;Aurélien Tricoire(Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden;Swerea IVF AB, Material Applications-Ceramics, M?lndal, Sweden;GKN Aerospace Sweden AB, Trollh?ttan, Sweden)
