FLASH Sintered Potassium Sodium Niobate: High-Performance Piezoelectric Ceramics at Low Thermal Budget Processing

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6 Oct by Joana Sousa

FLASH Sintered Potassium Sodium Niobate: High-Performance Piezoelectric Ceramics at Low Thermal Budget Processing

Ricardo Serrazina, Alexander Tkach, Luis Pereira, Ana M. O. R. Senos, Paula M. Vilarinho

CICECO, University of Aveiro, Portugal

CENIMAT-I3N, Universidade NOVA de Lisboa, Portugal

Materials 2022, 15, 6603

  • High thermal budgets and CO2 footprint of conventional ceramic sintering, are currently an issue
  • Alternative sintering technologies are needed
  • FLASH sintering, an electric field- and current-assisted technique, might be a solution
  • Here we report FLASH sintered KNN ceramics (Tsinteringmax = 900 ◦C, timeTotal = 210 min) have room-temperature remnant polarization Pr = 21 μC/cm2, Ec = 10 kV/cm and longitudinal piezoelectric coefficient d33 = 117 pC/N, slightly superior to that of conventional ones (Tsinteringmax = 1125 ◦C, timeTotal = 620 min)
  • High-performance KNN ceramics FLASH sintered at a low-thermal budget have implications for the development of innovative low carbon technologies, electroceramics stakeholders, and piezoelectric energy harvesters

FOR MORE INFOS SUGGEST READING https://doi.org/10.3390/ma15196603

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