Mandal, Pijush Kanti and Majumdar, Rabindranath and Mukherjee, Kalyan Kumar and Chakrabarti, Omprakash and Maiti, Himadri Sekhar (2009) An ultralight porous alumina ceramic in the image of jute stem. Journal of Ceramic Processing Research, 10 (4). pp. 457-461. ISSN 1229-9162

PDF - Published Version Restricted to Registered users only Download (6Mb) | Request a copy

Abstract

A carbonaceous preform (C-preform) was prepared by thermal and microwave (MW) processing of short lengths (0.02-0.06 m) of dry stems of jute (Corchorus capsularis L). Infiltration of an Al(2)O(3)-sol into the C-preforms and a subsequent oxidising heat treatment (1273-1723 K) resulted in the formation of an ultralight monophasic Al(2)O(3) ceramic (bulk density similar to 200 kg.m(-3)) with perfect replication of the pore structure of the starting C-preforms derived from the jute stems (JS). The cellular porous alumina ceramics derived from JS having special morphologies with a long, large and oriented growth of alpha alumina grains are likely to be suitable for devices such as high temperature insulators, catalyst supports, permeators for gas phase reactions at elevated temperatures, and biomaterials such as for controlled drug release devices.

Item Type:	Article
Uncontrolled Keywords:	Jute stem; Cellular carbonaceous preform; Ultralight cellular alumina
Subjects:	Engineering Materials
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	27 Feb 2012 11:59
Last Modified:	27 Feb 2012 11:59
URI:	http://cgcri.csircentral.net/id/eprint/1038

Actions (login required)

View Item