Effect of cobalt oxide on the sintering and grain growth of Al2O3-YAG composite nanopowder | Zendy

S.A. Hassanzadeh-Tabrizi | Zendy; E. Taheri-Nassaj | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Effect of cobalt oxide on the sintering and grain growth of Al2O3-YAG composite nanopowder

Author(s) -

S.A. Hassanzadeh-Tabrizi,

E. Taheri-Nassaj

Publication year - 2010

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos1003321h

Subject(s) - materials science , cobalt oxide , sintering , composite number , cobalt , grain growth , oxide , amorphous solid , grain size , nanoparticle , grain boundary , doping , particle size , metallurgy , chemical engineering , composite material , microstructure , nanotechnology , crystallography , chemistry , optoelectronics , engineering

In the present study, the effect of cobalt oxide on the densification of Al2O3-YAG composite nanopowder was investigated. An amorphous nanopowder was synthesized and crystallized to Al2O3-YAG after heat-treatment via a solid-state reaction. The average particle size of heat-treated powder at 800°C was about 80 nm. Cobalt oxide improved the sintering rate of Al2O3-YAG composite nanopowders and promoted grain boundary mobility. Cobalt oxide doping increased the ratio of densification/grain growth rate. The activation energy for grain growth decreased from 590 to 485 kJ/mol by adding cobalt oxide to the composite nanopowder

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research