Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts

In the present study, the fibrous fumed alumina compact with low thermal conductivity is prepared with a mechanical processing technique. The thermal conductivity of the compact remains low up to a temperature of 350°C. For the fibrous compact, the mechanical processing parameters play important rol...

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Main Authors: Tseng-Wen Lian, Akira Kondo, Takahiro Kozawa, Takahiro Ohmura, Wei-Hsing Tuan, Makio Naito
Format: Article
Language:English
Published: Taylor & Francis Group 2018-04-01
Series:Journal of Asian Ceramic Societies
Subjects:
Online Access:http://dx.doi.org/10.1080/21870764.2018.1465659
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author Tseng-Wen Lian
Akira Kondo
Takahiro Kozawa
Takahiro Ohmura
Wei-Hsing Tuan
Makio Naito
author_facet Tseng-Wen Lian
Akira Kondo
Takahiro Kozawa
Takahiro Ohmura
Wei-Hsing Tuan
Makio Naito
author_sort Tseng-Wen Lian
collection DOAJ
description In the present study, the fibrous fumed alumina compact with low thermal conductivity is prepared with a mechanical processing technique. The thermal conductivity of the compact remains low up to a temperature of 350°C. For the fibrous compact, the mechanical processing parameters play important role on controlling the thermal insulation capability. The thermal conductivity of compact increases from 0.036 to 0.042 W/m∙K by increasing the rotating speed of rotor. On the other hand, the value remains low by increasing processing time. The strength is decreased due to the increase of processing time. Thus, a lower rotating speed and a shorter processing time could result in a compact with favorable thermal insulation and strength. The results can be related to the surface structure of the coated alumina fibers and granulated structure within the compacts.
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spelling doaj.art-39da29fb9bdf4da99166d74b8e7123f32022-12-21T22:33:50ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642018-04-016215616110.1080/21870764.2018.14656591465659Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compactsTseng-Wen Lian0Akira Kondo1Takahiro Kozawa2Takahiro Ohmura3Wei-Hsing Tuan4Makio Naito5Osaka UniversityOsaka UniversityOsaka UniversityNational Institute of Technology, Wakayama CollegeNational Taiwan UniversityOsaka UniversityIn the present study, the fibrous fumed alumina compact with low thermal conductivity is prepared with a mechanical processing technique. The thermal conductivity of the compact remains low up to a temperature of 350°C. For the fibrous compact, the mechanical processing parameters play important role on controlling the thermal insulation capability. The thermal conductivity of compact increases from 0.036 to 0.042 W/m∙K by increasing the rotating speed of rotor. On the other hand, the value remains low by increasing processing time. The strength is decreased due to the increase of processing time. Thus, a lower rotating speed and a shorter processing time could result in a compact with favorable thermal insulation and strength. The results can be related to the surface structure of the coated alumina fibers and granulated structure within the compacts.http://dx.doi.org/10.1080/21870764.2018.1465659Fumed aluminathermal conductivitymechanical processingthermal insulationstrength
spellingShingle Tseng-Wen Lian
Akira Kondo
Takahiro Kozawa
Takahiro Ohmura
Wei-Hsing Tuan
Makio Naito
Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
Journal of Asian Ceramic Societies
Fumed alumina
thermal conductivity
mechanical processing
thermal insulation
strength
title Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
title_full Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
title_fullStr Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
title_full_unstemmed Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
title_short Effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
title_sort effect of mechanical processing on thermal and mechanical properties of fibrous fumed alumina compacts
topic Fumed alumina
thermal conductivity
mechanical processing
thermal insulation
strength
url http://dx.doi.org/10.1080/21870764.2018.1465659
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