Colloidal Shaping of Alumina Ceramics by Thermally Induced Gelation of Methylcellulose

Authors: Hareesh, Unnikrishnan Nair Saraswathy; Anantharaju, Rakesh; Biswas, Papiya; Rajeswari, Kotikalapudi; Johnson, Roy

Source: Journal of the American Ceramic Society, Volume 94, Number 3, March 2011 , pp. 749-753(5)

Publisher: Wiley-Blackwell

Buy & download fulltext article:

OR

Price: $48.00 plus tax (Refund Policy)

Abstract:

Dense alumina ceramics have been fabricated by the colloidal shaping of alumina slurry using methylcellulose as the networking additive. Concentration as low as 0.08 wt% of methylcellulose had been found to be sufficient enough to convert an alumina slurry of 74–75 wt% solid loading, to consolidated shapes by thermal gelation at 70°–80°C. Cast shapes could be sintered to dense alumina (99% TD) at temperatures in the range of 1500°–1525°C at a minimum heating rate of 180°C/h. The effect of methylcellulose concentration on the viscosity of suspensions was studied and green strengths of samples are investigated.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2010.04188.x

Affiliations: Centre for Ceramic Processing, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad-500005, India

Publication date: March 1, 2011

Tools

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page