Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K2Ti6O13 whiskers

Hao Liu; Nan Wei; Zhou-fu Wang; Xi-tang Wang; Yan Ma

doi:10.1007/s12613-017-1525-z

Volume 24 Issue 11

Nov. 2017

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文章导航 > 矿物冶金与材料学报（英文） > 2017 > 24(11): 1335-1340

Hao Liu, Nan Wei, Zhou-fu Wang, Xi-tang Wang, and Yan Ma, Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers, Int. J. Miner. Metall. Mater., 24(2017), No. 11, pp. 1335-1340. https://doi.org/10.1007/s12613-017-1525-z

Cite this article as:

Hao Liu, Nan Wei, Zhou-fu Wang, Xi-tang Wang, and Yan Ma, Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K2Ti6O13 whiskers, Int. J. Miner. Metall. Mater., 24(2017), No. 11, pp. 1335-1340. https://doi.org/10.1007/s12613-017-1525-z

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研究论文

Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers

The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

通讯作者:
Hao Liu E-mail: wustlh@163.com

中文摘要

To improve their mechanical and thermal insulation properties, aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers were prepared by firing a mixture of short aluminum silicate fibers and gel powders obtained from a sol-gel process. During the preparation process, the fiber surface was coated with K₂Ti₆O₁₃ whiskers after the fibers were subjected to a heat treatment carried out at various temperatures. The effects of process parameters on the microstructure, compressive strength, and thermal conductivity were analyzed systematically. The results show that higher treatment temperatures and longer treatment durations promoted the development of K₂Ti₆O₁₃ whiskers on the surface of aluminum silicate fibers; in addition, the intersection structure between whiskers modulated the morphology and volume of the multi-aperture structure among fibers, substantially increasing the fibers' compressive strength and reducing their heat conduction and convective heat transfer at high temperatures.

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Research Article

Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers

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Abstract

Abstract

To improve their mechanical and thermal insulation properties, aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers were prepared by firing a mixture of short aluminum silicate fibers and gel powders obtained from a sol-gel process. During the preparation process, the fiber surface was coated with K₂Ti₆O₁₃ whiskers after the fibers were subjected to a heat treatment carried out at various temperatures. The effects of process parameters on the microstructure, compressive strength, and thermal conductivity were analyzed systematically. The results show that higher treatment temperatures and longer treatment durations promoted the development of K₂Ti₆O₁₃ whiskers on the surface of aluminum silicate fibers; in addition, the intersection structure between whiskers modulated the morphology and volume of the multi-aperture structure among fibers, substantially increasing the fibers' compressive strength and reducing their heat conduction and convective heat transfer at high temperatures.
- aluminum silicate fiber;
- potassium hexatitanate whiskers;
- compressive strength;
- thermal conductivity

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Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers

中文摘要

Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K₂Ti₆O₁₃ whiskers

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