- Multilaminati piezoelettrici a gradiente funzionale
- Mercadelli, Elisa <1982>
Subject
- CHIM/04 Chimica industriale
Description
- Aim of this thesis was the production of porosity-graded piezoelectric ceramics for ultrasonic applications by tape casting and screen printing. The study and optimization of each single step of the tape casting process allowed to produce flat and crack-free multilayers of Pb0.988(Zr0.52Ti0.48)0.976Nb0.024O3 (PZTN) of uniform and graded porosity. The multilayers of thickness ranging between 400 and 800 µm were produced stacking optimized green layers with different amount of pore former. The functionally graded materials showed porosity ranging between 10 and 30% with piezoelectric properties suitable for the specific ultrasonic applications. Screen printing inks of PZTN for deposition onto four different substrates were studied and optimized. Thick films with thickness ranging between 4 and 20 µm were produced tailoring the screen printing parameters and number of depositions.
Date
- 2010-03-29
Type
- Doctoral Thesis
- PeerReviewed
Format
- application/pdf
Identifier
urn:nbn:it:unibo-2110
Mercadelli, Elisa (2010) Multilaminati piezoelettrici a gradiente funzionale, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Chimica industriale