Granulation of Nano Alumina Powder for Improved Flowability by Spray Drying

Sathish, S and Geetha, M and UdayaKumar, A and Senthil Kumar, S (2012) Granulation of Nano Alumina Powder for Improved Flowability by Spray Drying. Transactions of the Indian Institute of Metals, 65 (5). pp. 485-490. ISSN 0019-493X

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Official URL: http://dx.doi.org/10.1007/s12666-012-0158-1

Abstract

This paper reports on the methodology adopted for obtaining near spherical agglomerated Al2O3 powders which enables them to be coated by plasma spray technique on titanium alloys. An attempt was made on spray drying alumina slurries with polyethylene glycol as binder and sodium hexametaphosphate as a dispersant. The effect of pH on the stability and viscosity of the slurry was established and also the rheological behavior of the slurry was studied in detail. Uniform agglomerated particles were obtained by spray drying the slurry containing 22 vol% alumina, 6 wt% polyethylene glycol and 0.02 wt% sodium hexametaphosphate as a dispersant.

Item Type: Article
Additional Information: Copyright to this article belongs to M/s. Indian Institute of Metals
Uncontrolled Keywords: Alumina;Polyethylene glycol;Sodium hexametaphosphate;Spray drying
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 11 not found.
Date Deposited: 01 Apr 2013 10:17
Last Modified: 01 Apr 2013 10:17
URI: http://nal-ir.nal.res.in/id/eprint/11559

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