TY - GEN
T1 - Effect of the two-step sintering to the phase structure, microstructure and dielectric properties of undoped K0.5Na0.5NbO3-Based lead-free ceramics
AU - Saari, Muhammad Qusyairie
AU - Mohamed, Julie Juliewatty
AU - Bahanurddin, Nor Fatin Khairah
AU - Jumali, Mohammad Hafizuddin
AU - Rahman, Mohd Fariz Ab
AU - Yuwono, Akhmad Herman
N1 - Publisher Copyright:
© 2022 Author(s).
PY - 2022/6/9
Y1 - 2022/6/9
N2 - The two-step sintering with a low temperature in synthesizing a homogeneous microstructure in Potassium Sodium Niobate (K0.5N0.5Nb3 @ KNN) piezoceramic without not normal grain growth was studied. The KNN ceramics prepared through conventional sintering at temperatures up to 1120 °C resulted in homogeneous microstructures with a bimodal grain size distribution. In contrast, the two-step sintering (1120°C for 10 minutes in the first step and 1070 °C for 10 hours in the second step) resulted in a homogeneous microstructure with a grain size of a few micrometers. The samples prepared by two-step sintering had high dielectric properties comparable to samples prepared through conventional sintering for Lead Zirconate Titanate (PZT). KNN bulk ceramic with homogeneous microstructures was successfully synthesized by a two-step sintering method and their dielectric properties were measured. The key requirements are piezoelectric ceramics with a small grain size, near-full density and the intended stoichiometric one to one ratio to fabricate colossol-performance energy harvesters.
AB - The two-step sintering with a low temperature in synthesizing a homogeneous microstructure in Potassium Sodium Niobate (K0.5N0.5Nb3 @ KNN) piezoceramic without not normal grain growth was studied. The KNN ceramics prepared through conventional sintering at temperatures up to 1120 °C resulted in homogeneous microstructures with a bimodal grain size distribution. In contrast, the two-step sintering (1120°C for 10 minutes in the first step and 1070 °C for 10 hours in the second step) resulted in a homogeneous microstructure with a grain size of a few micrometers. The samples prepared by two-step sintering had high dielectric properties comparable to samples prepared through conventional sintering for Lead Zirconate Titanate (PZT). KNN bulk ceramic with homogeneous microstructures was successfully synthesized by a two-step sintering method and their dielectric properties were measured. The key requirements are piezoelectric ceramics with a small grain size, near-full density and the intended stoichiometric one to one ratio to fabricate colossol-performance energy harvesters.
UR - http://www.scopus.com/inward/record.url?scp=85132811351&partnerID=8YFLogxK
U2 - 10.1063/5.0079067
DO - 10.1063/5.0079067
M3 - Conference contribution
AN - SCOPUS:85132811351
T3 - AIP Conference Proceedings
BT - International Conference on Bioengineering and Technology, IConBET2021
A2 - Mohamad, Mardawani
A2 - Sulaiman, Muhammad Azwadi
A2 - Wan Osman, Wan Hasnidah
A2 - Mohammad, Rosmawan
A2 - Amini, Mohd Hazim Mohamad
A2 - Wee, Seng Kew
A2 - Shoparwe, Noor Fazliani
A2 - Boon, Jia Geng
A2 - Wong, Yee Ching
A2 - Mamat, Sarizam
PB - American Institute of Physics Inc.
T2 - 2021 International Conference on Bioengineering and Technology, IConBET2021
Y2 - 24 May 2022 through 25 May 2022
ER -