Journals Information
Universal Journal of Materials Science Vol. 8(1), pp. 1 - 10
DOI: 10.13189/ujms.2020.080101
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Effect of Manganese Addition on 94NBT-6BT Lead Free Multilayer Ceramics
Mert Gul 1,2,*, Mevl眉t Gurbuz 3, Abdi B. Gokceyrek 4, Ayseg眉l Tokta艧 4, Taner Kavas 1, Ayd谋n Dogan 2,4
1 Department of Materials Science and Engineering, Afyon Kocatepe University, Turkey
2 Nanotech High Tech Ceramics Co., Eskisehir, Turkey
3 Department of Mechanical Engineering, Ondokuz May谋s University, Turkey
4 Department of Materials Science and Engineering, Iki Eyl眉l Technical University, Turkey
ABSTRACT
In this study, lead-free 94Bi0,5Na0,5TiO3-6BaTiO3 (94NBT-6BT) ceramics were fabricated by solid-state synthesis method at ambient atmosphere. Glassy phase and rounded particles in 94NBT-6BT was observed with increasing Mn content. The effects of doping manganese on the ferroelectric properties of 94NBT-6BT bulk ceramics were evaluated. From the XRD results of the calcined powders, peaks were slightly changed to higher 2 theta value while increasing manganese ratio. Multivalence additive Mn ions act as acceptor dopant in 94NBT-6BT structure at ambient atmosphere. Samples were sintered from 1075 ℃ to 1175 ℃ for 2 hours to obtain highest piezoelectric values. SEM results show that glassy phase and rounded particles in 94NBT-6BT was observed with increasing Mn content so, bulk density was enhanced up to 1125C. From the results, 0.3 wt% manganese doped 94NBT-6BT samples have highest electromechanical coupling factor about 0.23, mechanical coupling factor (Qm) 150 and d33 110 pC/N respectively. Further work, 94NBT-6BT and Mn-doped 94NBT-6BT multilayer actuators were manufactured by water-based tape casting technique. The active area was 49 mm2 MLA and was fabricated by using Ag-Pd internal electrode without Pd-Bi reaction at the electrode-ceramic interface. Hysterisis loop measurements of manufactured lead free actuators were done by using Aixacct CMA module. Remnant polarization values of Mn-doped 94NBT-6BT MLA for a layer were higher than 6 碌C/cm2.
KEYWORDS
Lead-Free, 94NBT-6BT, Manganese Doped, Multilayer, Electrical Properties
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Mert Gul , Mevl眉t Gurbuz , Abdi B. Gokceyrek , Ayseg眉l Tokta艧 , Taner Kavas , Ayd谋n Dogan , "Effect of Manganese Addition on 94NBT-6BT Lead Free Multilayer Ceramics," Universal Journal of Materials Science, Vol. 8, No. 1, pp. 1 - 10, 2020. DOI: 10.13189/ujms.2020.080101.
(b). APA Format:
Mert Gul , Mevl眉t Gurbuz , Abdi B. Gokceyrek , Ayseg眉l Tokta艧 , Taner Kavas , Ayd谋n Dogan (2020). Effect of Manganese Addition on 94NBT-6BT Lead Free Multilayer Ceramics. Universal Journal of Materials Science, 8(1), 1 - 10. DOI: 10.13189/ujms.2020.080101.