Sintered corundum components with submicrometer grain sizes exhibit properties which enable numerous new applications. Wet powder processing is developed to associate minimum grain sizes at highest densities with the lowest population of macro defects. A closest ratio of powder particle size and sintered grain size is important for obtaining most fine-grained microstructure. This target was approached best by using powders with particle sizes in the range of 100-200nm rather than with smaller nanoparticles.
Origin
Fraunhofer Inst For Ceramic Technologies, Germany
Journal Title
J Am Ceram Soc 86 4 2003 546-553
Sector
Special Glass
Class
S 2503