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The Preparation and XRD Analysis of Nanocrysalline ZrO_2/Al_2O_3 Composite Ceramic Powders

Guo Hai-feng

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Abstract

Nanocrystalline ZrO_2/Al_2O_3 composite powders are synthesized successfully from aqueous solution of metal nitrate containing citric acid as chelating agent by sol-gel method.The construct and phase purity of the powders are analyzed by means of XRD.And the two key factors,initial solution concentration and the heat decomposition temperature of the gel are studied.From the experiment we can get the conclusions that when the initial solution concentration is 0.6mol/L and the heat decomposition temperature is 1200℃,we can get the best result.The size of ZrO_2/Al_2O_3composite powders made in the best parameters range from 30nm to 41nm.

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What this paper is about

Nanocrystalline ZrO_2/Al_2O_3 composite powders are synthesized successfully from aqueous solution of metal nitrate containing citric acid as chelating agent by sol-gel method.The construct and phase purity of the powders are analyzed by means of XRD.And the two key factors,initial solution concentration and the heat decomposition temperature of the gel are studied.From the experiment we can get the conclusions that when the initial solution concentration is 0.6mol/L and the heat decomposition temperature is 1200℃,we can get the best result.The size of ZrO_2/Al_2O_3composite powders made in the best parameters range from 30nm to 41nm.

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Available abstract

Nanocrystalline ZrO_2/Al_2O_3 composite powders are synthesized successfully from aqueous solution of metal nitrate containing citric acid as chelating agent by sol-gel method.The construct and phase purity of the powders are analyzed by means of XRD.And the two key factors,initial solution concentration and the heat decomposition temperature of the gel are studied.From the experiment we can get the conclusions that when the initial solution concentration is 0.6mol/L and the heat decomposition temperature is 1200℃,we can get the best result.The size of ZrO_2/Al_2O_3composite powders made in the best parameters range from 30nm to 41nm.

Key concepts: Citric acid, Materials science, Nanocrystalline material, Composite number, Aqueous solution, Ceramic, Decomposition, Phase (matter)

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The Preparation and XRD Analysis of Nanocrysalline ZrO_2/Al_2O_3 Composite Ceramic Powders — Research Paper | ScholarLens