A Comparative Analysis of the Flow Properties between Two Alumina-Based Dry Powders
Joint Authors
Ferreira, Maria do Carmo
de Campos, Milene Minniti
Source
Advances in Materials Science and Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-04
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
We measured and compared the flow properties of two alumina-based powders.
The alumina powder (AP) is irregularly shaped and has a smooth surface and moisture content of 0.16% (d.b.), and the ceramic powder (CP), obtained after atomization in a spray dryer, is spherical and has a rough surface and moisture content of 1.07%.
We measured the Hausner ratio (HR), the static angle of repose (AoR), the flow index (FI), the angle of internal friction, and the wall's friction angle.
The properties measured using aerated techniques (AoR and HR) demonstrated that AP presents true cohesiveness (and therefore a difficult flow), while CP presents some cohesiveness and its flow might be classified as half way between difficult and easy flow.
Their FI values, which were obtained using a nonaerated technique, enable us to classify the alumina as cohesive and the ceramic powder as an easy-flow powder.
The large mean diameter and morphological characteristics of CP reduce interparticle forces and improve flowability, in spite of the higher moisture content of their granules.
The angles of internal friction and of wall friction were not significantly different when comparing the two powders.
American Psychological Association (APA)
de Campos, Milene Minniti& Ferreira, Maria do Carmo. 2013. A Comparative Analysis of the Flow Properties between Two Alumina-Based Dry Powders. Advances in Materials Science and Engineering،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-478213
Modern Language Association (MLA)
de Campos, Milene Minniti& Ferreira, Maria do Carmo. A Comparative Analysis of the Flow Properties between Two Alumina-Based Dry Powders. Advances in Materials Science and Engineering No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-478213
American Medical Association (AMA)
de Campos, Milene Minniti& Ferreira, Maria do Carmo. A Comparative Analysis of the Flow Properties between Two Alumina-Based Dry Powders. Advances in Materials Science and Engineering. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-478213
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478213