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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    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: Journal 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)
    Division/Department: Other, Other, Materials Science Division, Materials Science Division
    Depositing User: Ms. Alphones Mary
    Date Deposited: 01 Apr 2013 15:47
    Last Modified: 01 Apr 2013 15:47
    URI: http://nal-ir.nal.res.in/id/eprint/11559

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