Nano-engineering of zirconia–noble metals composites
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- 作者：Vasylkiv ; Oleg ; Sakka ; Yoshio ; Maeda ; Yasuaki ; Skorokhod ; Valeriy V.
- 关键词：Nanocomposites ; Powders-chemical preparation ; Suspensions ; ZrO2 ; Metallic inclusions
- 刊名：Journal of the European Ceramic Society
- 出版年：2004
- 出版时间：2004
- 年：2004
- 卷：24
- 期：2
- 页码：469-473
- 全文大小：217 K
文摘
The possibility of preparation of Pt–3Y-TZP and Pd–3Y-TZP nano-composites was studied. The sonochemically synthesized Pt (Pd) nano-particles (
2 nm) were impregnated into zirconia nano-aggregates (20–45 nm). The morphology manipulation technique allowed production of the composite zirconia-based aggregates in which a significant fraction of the Pt (Pd) crystallites was embedded into the zirconia dense aggregates. Using the colloidal technique and low-temperature (1150 °C) sintering, we prepared the Pt (Pd)–zirconia (0.5–1.5 wt. % of platinum) nano-composites with average 3Y-TZP grain sizes of 120 nm, and with the Pt (Pd) grain size in the range of 20–60 nm.
2 nm) were impregnated into zirconia nano-aggregates (20–45 nm). The morphology manipulation technique allowed production of the composite zirconia-based aggregates in which a significant fraction of the Pt (Pd) crystallites was embedded into the zirconia dense aggregates. Using the colloidal technique and low-temperature (1150 °C) sintering, we prepared the Pt (Pd)–zirconia (0.5–1.5 wt. % of platinum) nano-composites with average 3Y-TZP grain sizes of 120 nm, and with the Pt (Pd) grain size in the range of 20–60 nm.