STRONTIUM ZIRCONATE (cas 12036-39-4) as silicon and aluminum scavenger in yttria stabilized zirconia
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Add time:07/29/2019 Source:sciencedirect.com
Here we report on STRONTIUM ZIRCONATE (cas 12036-39-4) as a getter for silicon dioxide and aluminum oxide in yttria stabilized zirconia (YSZ) single crystals for cleaning purposes. YSZ single crystals were covered with strontium zirconate powder and heat treated at 1450 °C in water vapor. After treatment the YSZ single crystals showed homogeneously distributed ball-sectioned features (bumps) across the external surface of the crystal. The composition as quantified by energy-dispersive X-ray spectroscopy (EDS) showed a large enrichment of silicon and aluminum in the bumps. From cross-section analysis by transmission electron microscopy (TEM) the interface region between bump and YSZ single crystal bulk was examined. EDS showed a homogeneous distribution of silicon and aluminum through the cross section of a bump. The results suggest strontium zirconate as a good getter for silicon and aluminum from bulk materials at elevated temperatures and prove a route to remove trace bulk impurities in YSZ.
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