Life cycle assessment and environmental profile evaluation of lead-free piezoelectrics in comparison with lead zirconate titanate

Contrary to conventional knowledge, LCA of PZT vs. KNN indicates the presence of niobium in KNN constitutes far greater impact across all the 16 categories considered in comparison with PZT. The increased environmental impact of KNN occurs in the early stages of the LCA due to raw material extraction and processing.

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Vibrational piezoelectric energy harvester’s performance using lead-zirconate titanate versus lead-free potassium sodium niobate

Materials Research Express ◽

10.1088/2053-1591/ab492e ◽

2019 ◽

Vol 6 (11) ◽

pp. 115708

Author(s):

M H Maziati Akmal ◽

A R M Warikh ◽

A A M Ralib

Keyword(s):

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Lead Free ◽

Sodium Niobate ◽

Potassium Sodium Niobate ◽

Potassium Sodium ◽

Piezoelectric Energy ◽

Zirconate Titanate

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Lead-free piezoelectric (K,Na)NbO3-based ceramic with planar-mode coupling coefficient comparable to that of conventional lead zirconate titanate

Japanese Journal of Applied Physics ◽

10.7567/jjap.56.061501 ◽

2017 ◽

Vol 56 (6) ◽

pp. 061501 ◽

Cited By ~ 8

Author(s):

Kazushige Ohbayashi ◽

Takayuki Matsuoka ◽

Kazuaki Kitamura ◽

Hideto Yamada ◽

Tomoko Hishida ◽

...

Keyword(s):

Lead Zirconate Titanate ◽

Coupling Coefficient ◽

Mode Coupling ◽

Lead Zirconate ◽

Lead Free ◽

Zirconate Titanate ◽

Planar Mode ◽

Mode Coupling Coefficient

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Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143961 ◽

1986 ◽

Vol 44 ◽

pp. 482-483

Author(s):

M.L.A. Dass ◽

T.A. Bielicki ◽

G. Thomas ◽

T. Yamamoto ◽

K. Okazaki

Keyword(s):

Lead Zirconate Titanate ◽

Direct Proof ◽

Lead Zirconate ◽

Subsolidus Phase ◽

Pzt Ceramics ◽

Subsolidus Phase Diagram ◽

Zirconate Titanate ◽

Two Phases ◽

Cbd Method ◽

Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

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