English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The present study was devoted to an investigation of the synthesis conditions and the influence of Sn ions on the production of a CaZrO3 porous structure. Porous ceramics based on CaZrO3 with a SnO addition were prepared by means of pressureless sintering. The study presents the influence of the type of the starting materials and the firing procedures on the microstructures of the CaZrO3 materials. Two different firing procedures were applied. The samples were obtained from pure chemical reagents CaCO3 or CaO and ZrO2. SnO was added in the mass fraction of 2 %. The prepared materials were investigated in terms of phase composition with the XRD. The microstructure was analyzed using the SEM/EDS and mercury porosimetry methods. It was found that using CaCO3 in a one-step firing process at 1650 °C with a soaking time of 10 h allowed us to obtain porous zirconate ceramics with a porosity of about 44 %. The second synthesis, where CaO was used, allowed us to obtain a porosity of about 36 %. During the firing solid solutions containing Sn ions in CaZrO3 and ZrO2 were formed. No other compounds containing Sn ions were identified. It was found that these ions played a significant role in the formation of a stable porous microstructure. The final materials mainly consisted of CaZrO3 and a small amount of ZrO2. The obtained porous CaZrO3 materials with an excellent oxidation and alkali resistance in a wide temperature range could be potential candidates for the use as membranes and filters.

Preparation of porous ceramic materials based on CaZrO3