Novel monolithic yttria-alumina aerogel with low thermal conductivity made from inorganic precursors

Peilei Hu; Yinjie Sun; Benzheng Gao; Min Gong; Bo Luo; Jinpeng Fan

doi:10.1016/j.ceramint.2022.03.143

Novel monolithic yttria-alumina aerogel with low thermal conductivity made from inorganic precursors

Peilei Hu, Yinjie Sun, Benzheng Gao, Min Gong, Bo Luo, Jinpeng Fan^*

^*Corresponding author for this work

Institute of Advanced Structure Technology

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

A novel monolithic yttria-alumina aerogel was successfully prepared using inorganic precursors through the sol-gel method. The yttria-alumina aerogel possesses a three-dimensional network structure composed of numerous nanoscale flake like particles and nanoscale pores. In addition, the aerogel is mainly made up of nano Y₂O₃ grains, and Al atoms are dissolved in the Y₂O₃ grains to form the solid solution. The aerogel with a low density of 0.203 g/cm³ exhibits low thermal conductivity of 0.016 W/(m·K). Therefore, the yttria-alumina aerogel shows promise for application as a thermal insulation material.

Original language	English
Pages (from-to)	18699-18703
Number of pages	5
Journal	Ceramics International
Volume	48
Issue number	13
DOIs	https://doi.org/10.1016/j.ceramint.2022.03.143
Publication status	Published - 1 Jul 2022

Keywords

Sol–gel processes
Thermal conductivity
Yttria-alumina aerogels

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10.1016/j.ceramint.2022.03.143

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title = "Novel monolithic yttria-alumina aerogel with low thermal conductivity made from inorganic precursors",

abstract = "A novel monolithic yttria-alumina aerogel was successfully prepared using inorganic precursors through the sol-gel method. The yttria-alumina aerogel possesses a three-dimensional network structure composed of numerous nanoscale flake like particles and nanoscale pores. In addition, the aerogel is mainly made up of nano Y2O3 grains, and Al atoms are dissolved in the Y2O3 grains to form the solid solution. The aerogel with a low density of 0.203 g/cm3 exhibits low thermal conductivity of 0.016 W/(m·K). Therefore, the yttria-alumina aerogel shows promise for application as a thermal insulation material.",

keywords = "Sol–gel processes, Thermal conductivity, Yttria-alumina aerogels",

author = "Peilei Hu and Yinjie Sun and Benzheng Gao and Min Gong and Bo Luo and Jinpeng Fan",

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T1 - Novel monolithic yttria-alumina aerogel with low thermal conductivity made from inorganic precursors

AU - Hu, Peilei

AU - Sun, Yinjie

AU - Gao, Benzheng

AU - Gong, Min

AU - Luo, Bo

AU - Fan, Jinpeng

PY - 2022/7/1

Y1 - 2022/7/1

N2 - A novel monolithic yttria-alumina aerogel was successfully prepared using inorganic precursors through the sol-gel method. The yttria-alumina aerogel possesses a three-dimensional network structure composed of numerous nanoscale flake like particles and nanoscale pores. In addition, the aerogel is mainly made up of nano Y2O3 grains, and Al atoms are dissolved in the Y2O3 grains to form the solid solution. The aerogel with a low density of 0.203 g/cm3 exhibits low thermal conductivity of 0.016 W/(m·K). Therefore, the yttria-alumina aerogel shows promise for application as a thermal insulation material.

AB - A novel monolithic yttria-alumina aerogel was successfully prepared using inorganic precursors through the sol-gel method. The yttria-alumina aerogel possesses a three-dimensional network structure composed of numerous nanoscale flake like particles and nanoscale pores. In addition, the aerogel is mainly made up of nano Y2O3 grains, and Al atoms are dissolved in the Y2O3 grains to form the solid solution. The aerogel with a low density of 0.203 g/cm3 exhibits low thermal conductivity of 0.016 W/(m·K). Therefore, the yttria-alumina aerogel shows promise for application as a thermal insulation material.

KW - Sol–gel processes

KW - Thermal conductivity

KW - Yttria-alumina aerogels

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DO - 10.1016/j.ceramint.2022.03.143

M3 - Article

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VL - 48

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EP - 18703

JO - Ceramics International

JF - Ceramics International

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ER -

Novel monolithic yttria-alumina aerogel with low thermal conductivity made from inorganic precursors

Abstract

Keywords

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