Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 39, Issue 1, Pages 2-8Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.11.035
Keywords
Continuous hydrothermal synthesis; Nanomaterial; Zirconia; Inkjet; Thin films
Categories
Funding
- Fuel Cells and Hydrogen 2 Joint Undertaking [700266]
- European Union
- Hydrogen Europe
- N.ERGHY
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Water dispersions of nanometric yttria stabilized zirconia (YSZ) particles synthesized by Continuous Hydrothermal Synthesis are transferred into nano-inks for thin film deposition. YSZ nanoparticles are synthesized in supercritical conditions resulting in highly dispersed crystals of 10 nm in size. The rheology of the colloid is tailored to achieve inkjet printability (Z) by using additives for regulating viscosity and surface tension. Inks with a wide range of properties are produced. A remarkable effect of nanoparticles on the ink printability is registered even at solid load < 1%vol. In particular, nanoparticles hinder the droplet formation at low values of the printability while suitable jetting is observed at high Z values, i.e. Z approximate to 20. For the optimized inks, we achieve high quality printing with lateral and thickness resolutions of 70 mu m and ca. 250 nm respectively, as well as self-levelling effect with a reduction of the substrate roughness. Densification is achieved at sintering temperatures below 1200 degrees C.
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