Preparation method of porous (Zr0. 2Ti0. 2Nb0. 2Hf0. 2Y0. 2) O2-x high-entropy oxide ceramic

The invention discloses a preparation method of porous (Zr0. 2Ti0. 2Nb0. 2Hf0. 2Y0. 2) O2-x high-entropy oxide ceramic. The preparation method comprises the following steps: weighing reactants according to the molar ratio of metal atoms of a target product; the preparation method comprises the follo...

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Hauptverfasser:	HE XIAOJIANG, FU ZHIBING, HUANG CHUANQUN, NA HYUN, YANG RUI ZHUANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The invention discloses a preparation method of porous (Zr0. 2Ti0. 2Nb0. 2Hf0. 2Y0. 2) O2-x high-entropy oxide ceramic. The preparation method comprises the following steps: weighing reactants according to the molar ratio of metal atoms of a target product; the preparation method comprises the following steps: weighing reactants, dissolving the weighed reactants in ethanol, uniformly mixing, sequentially adding citric acid, water and epoxypropane into a reactant system, standing, carrying out gel aging, putting the reactant system into absolute ethyl alcohol, sufficiently carrying out ion exchange, and drying by virtue of supercritical ethanol, so as to obtain a ceramic raw material; and carrying out high-temperature sintering on the ceramic raw material, setting a heating rate and a heating temperature, carrying out heat preservation and then carrying out natural cooling in a furnace so as to obtain the porous (Zr0. 2Ti0. 2Nb0. 2Hf0. 2Y0. 2) O2-x high-entropy oxide ceramic. The porous (Zr < 0.2 > Ti < 0.2 >