Chiang Mai Journal of Science

Paper Type 

Title 

Author 

Email 

BaTiO₃/xAl₂O₃ nanocomposite ceramics (where x = 0, 3, 5, 10 and 15 mol%) were fabricated from commercially available BaTiO₃ powder and Al₂O₃ nano-powder using a simple solid-state mixed oxide method. The densities of the composite ceramics decreased with increasing content of Al₂O₃ dispersoid. Phase characterization by XRD suggested the reaction between BaTiO3 and Al₂O₃ occurred during sintering and resulted in BaAl₂O₄ and Ba₄Ti₁₀Al₂O₂₇ phases. Microstructures of the composite ceramics showed different grain morphologies with a decrease in grain size as the Al₂O₃ content increased. Knoop hardness showed the values between 3.63-5.42 GPa. The maximum hardness was achieved in the BaTiO₃/15mol% Al₂O₃ ceramic. In this investigation, the hardness tended to be affected by the degree of dispersion and the content of Al₂O₃ addition.

Start & End Page 

Received Date 

Revised Date 

Accepted Date 

Full Text 

Keyword 

Volume 

DOI 

SDGs