Grain Growth Control in Sb2O3-Doped Zinc Oxide

Grain growth is inevitable in the sintering of pure nanopowder zinc oxide. Sintering depend on diffusion kinetics, thus this growth could be controlled by ultra-fast sintering techniques, as microwave sintering. The purpose of this work was to investigate the nanostructural evolution of zinc oxide nanopowder compacts (average grain size of 80 nm) subjected to ultra-rapid microwave sintering at a constant holding temperature of 900°C, applying different heating rates and temperature holding times. Fine dense microstructures were obtained, with controlled grain growth (grain size from 200 to 450nm at high heating rate) when compared to those obtained by conventional sintering (grain size around 1.13µm), which leads to excessively large average final grain sizes.

Download Full-text

Sintering and grain growth kinetics in undoped and silica doped zinc oxide ceramics

Ceramics International ◽

10.1016/j.ceramint.2014.03.065 ◽

2014 ◽

Vol 40 (7) ◽

pp. 10755-10766 ◽

Cited By ~ 9

Author(s):

Tapatee Kundu Roy ◽

Abhijit Ghosh

Keyword(s):

Zinc Oxide ◽

Grain Growth ◽

Growth Kinetics ◽

Oxide Ceramics ◽

Grain Growth Kinetics

Download Full-text

Thermodynamics versus kinetics of grain growth control in nanocrystalline zirconia

Acta Materialia ◽

10.1016/j.actamat.2017.07.005 ◽

2017 ◽

Vol 136 ◽

pp. 224-234 ◽

Cited By ~ 16

Author(s):

Nazia Nafsin ◽

Jeffery A. Aguiar ◽

Toshihiro Aoki ◽

Andrew M. Thron ◽

Klaus van Benthem ◽

...

Keyword(s):

Grain Growth ◽

Growth Control ◽

Nanocrystalline Zirconia ◽

Kinetics Of

Download Full-text

Grain Growth Control during Reaction-Sintering of Sodium-Beta"-Alumina

Materials Science Forum ◽

10.4028/www.scientific.net/msf.94-96.839 ◽

1992 ◽

Vol 94-96 ◽

pp. 839-848

Author(s):

R. Hartung ◽

Ch. Koepp

Keyword(s):

Grain Growth ◽

Growth Control ◽

Reaction Sintering ◽

Sodium Beta Alumina ◽

Beta Alumina

Download Full-text

The selection of grain-growth control additives for the sintering of ceramics

Mineralogical Magazine ◽

10.1180/minmag.1970.037.291.08 ◽

1970 ◽

Vol 37 (291) ◽

pp. 833-838 ◽

Cited By ~ 12

Author(s):

D. W. Budworth

Keyword(s):

Grain Boundary ◽

Grain Growth ◽

Growth Control ◽

Boundary Films ◽

Selection Of

SummaryThe close interrelation between sintering and grain growth is discussed critically, and the necessity for control, but not suppression, of grain growth is established. A distinction between discontinuous and exaggerated grain growth is drawn, and the superiority of grain boundary films as grain-growth control agents is demonstrated. Work on the establishment of tentative criteria for the selection of grain-growth control additives for alumina is reviewed and discussed, and the extension of these ideas to the selection of NaF as a successful aid for magnesia is described.

Download Full-text