Fast-firing of potassium sodium niobate (KNN)
Potassium sodium niobate (KNN) is one of the most promising Pb-free piezo-ceramics. In the present work, KNN was produced by fast-firing with different cooling strategies, i.e., fast and slow cooling. Dielectric, ferroelectric, and piezoelectric properties of fast-fired pellets were determined and c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Open Ceramics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539524000051 |
| _version_ | 1797249084087599104 |
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| author | Levent Karacasulu Merve Karakaya Umut Adem Vincenzo M. Sglavo Mattia Biesuz Cekdar Vakifahmetoglu |
| author_facet | Levent Karacasulu Merve Karakaya Umut Adem Vincenzo M. Sglavo Mattia Biesuz Cekdar Vakifahmetoglu |
| author_sort | Levent Karacasulu |
| collection | DOAJ |
| description | Potassium sodium niobate (KNN) is one of the most promising Pb-free piezo-ceramics. In the present work, KNN was produced by fast-firing with different cooling strategies, i.e., fast and slow cooling. Dielectric, ferroelectric, and piezoelectric properties of fast-fired pellets were determined and compared with those of conventional-sintered products. Although the samples produced by fast-firing had higher density than those obtained by conventional sintering, fast-cooled samples following fast firing show relatively low electrical properties. When fast-firing was combined with slow cooling, the electrical properties, especially piezoelectric d33 values, were improved. The material subjected to fast-firing at 1120 °C using slow cooling gave the highest relative density (about 95 %) with fine grains microstructure and a d33 of 112 pC/N whereas that produced by conventional sintering resulted in d33 of 80 pC/N with a relative density of 88 % for the same dwell time (30 min). |
| first_indexed | 2024-03-08T12:47:23Z |
| format | Article |
| id | doaj.art-779dd794bce84e36ba4c2adfc24e943d |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-04-24T20:24:51Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-779dd794bce84e36ba4c2adfc24e943d2024-03-22T05:40:55ZengElsevierOpen Ceramics2666-53952024-03-0117100541Fast-firing of potassium sodium niobate (KNN)Levent Karacasulu0Merve Karakaya1Umut Adem2Vincenzo M. Sglavo3Mattia Biesuz4Cekdar Vakifahmetoglu5Department of Materials Science and Engineering, İzmir Institute of Technology, 35430, İzmir, Türkiye; Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, Italy; Corresponding author Department of Materials Science and Engineering, Izmir Institute of Technology, 35430, Izmir, Turkiye.Department of Materials Science and Engineering, İzmir Institute of Technology, 35430, İzmir, TürkiyeDepartment of Materials Science and Engineering, İzmir Institute of Technology, 35430, İzmir, TürkiyeDepartment of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, ItalyDepartment of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, ItalyDepartment of Materials Science and Engineering, İzmir Institute of Technology, 35430, İzmir, TürkiyePotassium sodium niobate (KNN) is one of the most promising Pb-free piezo-ceramics. In the present work, KNN was produced by fast-firing with different cooling strategies, i.e., fast and slow cooling. Dielectric, ferroelectric, and piezoelectric properties of fast-fired pellets were determined and compared with those of conventional-sintered products. Although the samples produced by fast-firing had higher density than those obtained by conventional sintering, fast-cooled samples following fast firing show relatively low electrical properties. When fast-firing was combined with slow cooling, the electrical properties, especially piezoelectric d33 values, were improved. The material subjected to fast-firing at 1120 °C using slow cooling gave the highest relative density (about 95 %) with fine grains microstructure and a d33 of 112 pC/N whereas that produced by conventional sintering resulted in d33 of 80 pC/N with a relative density of 88 % for the same dwell time (30 min).http://www.sciencedirect.com/science/article/pii/S2666539524000051Potassium sodium niobateFast-firingDielectric propertiesFerroelectric propertiesPiezoelectric properties |
| spellingShingle | Levent Karacasulu Merve Karakaya Umut Adem Vincenzo M. Sglavo Mattia Biesuz Cekdar Vakifahmetoglu Fast-firing of potassium sodium niobate (KNN) Open Ceramics Potassium sodium niobate Fast-firing Dielectric properties Ferroelectric properties Piezoelectric properties |
| title | Fast-firing of potassium sodium niobate (KNN) |
| title_full | Fast-firing of potassium sodium niobate (KNN) |
| title_fullStr | Fast-firing of potassium sodium niobate (KNN) |
| title_full_unstemmed | Fast-firing of potassium sodium niobate (KNN) |
| title_short | Fast-firing of potassium sodium niobate (KNN) |
| title_sort | fast firing of potassium sodium niobate knn |
| topic | Potassium sodium niobate Fast-firing Dielectric properties Ferroelectric properties Piezoelectric properties |
| url | http://www.sciencedirect.com/science/article/pii/S2666539524000051 |
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