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Thermoresponsive Gelcasting: Improved Drying of Gelcast Bodies

An improved ceramic processing method, thermoresponsive gelcasting, has been developed. The method uses a rapid thermoresponsive gel system to solve the problem of inefficient drying within the conventional gelcasting procedure. The gel system of poly(N-isopropylacrylamide) gel containing poly-(ethy... Full description

Journal Title: American Ceramic Society. Journal of the American Ceramic Society Jun 2011, Vol.94(6), p.1679
Main Author: Wang, Xiaofeng
Other Authors: Wang, Richu , Peng, Chaoqun , Li, Haipu , Liu, Bing , Wang, Zhiyong
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 00027820
Link: http://search.proquest.com/docview/874932804/?pq-origsite=primo
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title: Thermoresponsive Gelcasting: Improved Drying of Gelcast Bodies
format: Article
creator:
  • Wang, Xiaofeng
  • Wang, Richu
  • Peng, Chaoqun
  • Li, Haipu
  • Liu, Bing
  • Wang, Zhiyong
subjects:
  • Ceramics
  • Alumina
  • Aqueous Solutions
  • Microstructure
  • Ceramic Sintering
ispartof: American Ceramic Society. Journal of the American Ceramic Society, Jun 2011, Vol.94(6), p.1679
description: An improved ceramic processing method, thermoresponsive gelcasting, has been developed. The method uses a rapid thermoresponsive gel system to solve the problem of inefficient drying within the conventional gelcasting procedure. The gel system of poly(N-isopropylacrylamide) gel containing poly-(ethylene oxide) graft chains with a freely mobile end was taken as an example for thermoresponsive gelcasting of alumina. The gelling behavior of organic aqueous solution was evaluated. The slurries (solids loading, 50 vol%) with the new gelcasting system were prepared. The wetting ceramic parts were almost completely dried in 70 min at 50°C. The microstructure of the green body is homogeneous. The flexural strength of the sintered ceramics is 282 ± 37 MPa with a theoretical density of 97.6%. [PUBLICATION ]
language: eng
source:
identifier: ISSN: 00027820
fulltext: fulltext
issn:
  • 00027820
  • 0002-7820
url: Link


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identifierISSN: 00027820
subjectCeramics ; Alumina ; Aqueous Solutions ; Microstructure ; Ceramic Sintering
descriptionAn improved ceramic processing method, thermoresponsive gelcasting, has been developed. The method uses a rapid thermoresponsive gel system to solve the problem of inefficient drying within the conventional gelcasting procedure. The gel system of poly(N-isopropylacrylamide) gel containing poly-(ethylene oxide) graft chains with a freely mobile end was taken as an example for thermoresponsive gelcasting of alumina. The gelling behavior of organic aqueous solution was evaluated. The slurries (solids loading, 50 vol%) with the new gelcasting system were prepared. The wetting ceramic parts were almost completely dried in 70 min at 50°C. The microstructure of the green body is homogeneous. The flexural strength of the sintered ceramics is 282 ± 37 MPa with a theoretical density of 97.6%. [PUBLICATION ]
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abstractAn improved ceramic processing method, thermoresponsive gelcasting, has been developed. The method uses a rapid thermoresponsive gel system to solve the problem of inefficient drying within the conventional gelcasting procedure. The gel system of poly(N-isopropylacrylamide) gel containing poly-(ethylene oxide) graft chains with a freely mobile end was taken as an example for thermoresponsive gelcasting of alumina. The gelling behavior of organic aqueous solution was evaluated. The slurries (solids loading, 50 vol%) with the new gelcasting system were prepared. The wetting ceramic parts were almost completely dried in 70 min at 50°C. The microstructure of the green body is homogeneous. The flexural strength of the sintered ceramics is 282 ± 37 MPa with a theoretical density of 97.6%. [PUBLICATION ABSTRACT]
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doi10.1111/j.1551-2916.2011.04557.x
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date2011-06-01