Preparation of high solid loading and low viscosity ceramic slurry for dip-coating method

Year 2022, Volume: 11 Issue: 3, 776 - 780, 18.07.2022

Berceste Beyribey , Joshua Persky

https://doi.org/10.28948/ngumuh.1096585

Abstract

BaCe0.7Zr0.1Y0.16Zn0.04O3-δ (BCZYZ) ceramic slurry has been prepared with different solid loading and the maximum solid loading of the slurry has been predicted as 25 vol.% using the Krieger-Dougherty equation. The slurry with the maximum solid loading has been formulated and applied as an electrolyte on porous NiO/BCZYZ tubular supports by the dip-coating method. Cells sintered at 1500°C for 10h have been characterised by Scanning Electron Microscopy (SEM) analysis. The 30μ thick, very dense electrolyte layer has successfully been achieved with some closed pores.

Keywords

Ceramic electrolyte, Dip-coating, NiO/BCZYZ, SOFC

Daldırarak kaplama yöntemi için katı yüklemesi yüksek ve viskozitesi düşük seramik kaplama çözeltisinin hazırlanması

Abstract

Farklı katı yüklemelerine sahip BaCe0.7Zr0.1Y0.16Zn0.04O3-δ (BCZYZ) seramik çözeltileri hazırlandı ve çözelti için maksimum katı yüklemesi Krieger- Dougherty eşitliği yardımı ile hacimce %25 olarak belirlendi. Maksimum katı yüklemesine sahip kaplama çözeltisi hazırlanarak, daldırarak kaplama yöntemi ile elektrolit olarak gözenekli NiO/BCZYZ tüp seklindeki desteklerin üzerine kaplandı. 1500°C’deki 10 saatlik sinterleme işleminden sonra, taramalı elektron mikroskopu yardımı ile elektrolit karakterize edildi. 30μ kalınlıkta, kapalı gözenekler içeren, geçirimsiz elektrolit kaplaması elde edildi.

Keywords

NiO/BCZYZ, Seramik elektrolit, Daldırarak kaplama, NiO/BCZYZ, KOYP

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