DAIS - Digital Archive of the Serbian Academy of Sciences and Arts
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   DAIS
  • Институт техничких наука САНУ / Institute of Technical Sciences SASA
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
  • View Item
  •   DAIS
  • Институт техничких наука САНУ / Institute of Technical Sciences SASA
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The effect of ball milling on properties of sintered manganese-doped alumina

Authorized Users Only
2019
Authors
Filipović, Suzana
Obradović, Nina
Marković, Smilja
Mitrić, Miodrag
Balać, Igor
Đorđević, Antonije
Pavlović, Vladimir B.
Article (Published version)
Metadata
Show full item record
Abstract
Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver pa...ste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.

Keywords:
alumina / ceramics / properties / sintering
Source:
Advanced Powder Technology, 2019, 30, 11, 2533-2540
Publisher:
  • Elsevier
Projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)

DOI: 10.1016/j.apt.2019.07.033

ISSN: 0921-8831

WoS: 000490130200009

Scopus: 2-s2.0-85070548925
[ Google Scholar ]
2
2
URI
http://www.sciencedirect.com/science/article/pii/S0921883119302596
http://dais.sanu.ac.rs/123456789/6951
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

DSpace software copyright © 2002-2015  DuraSpace
About DAIS - Digital Archive of the Serbian Academy of Sciences and Arts | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About DAIS - Digital Archive of the Serbian Academy of Sciences and Arts | Send Feedback

re3dataOpenAIRERCUB