Compaction Law of Nanocrystalline ZrO_2 Powders with Binder

The authors dealt with the compaction data of ZrOZ (3wt% Y2O3) nanocrystalline powderspreparated by tubular reactor. The results indicate that the compaction law of these powderscollforms to Huang Peiyun Double Logarithmic Equation. According to the equation, the compaction performance parameters of the powders calculated are the compaction module of 11.9MPato 12.7MPa and the nonlinear exponent of 7.15. The compaction module of the powder is decreasedwith increasing of binder, and the nonlinear exponent keeps almost unalterble By combining withtesting the ZrO2 green compact pore size, analyses indicate that the ideal compacting pressure ofthe nanocrystalline ZrO2 powders is from 40MPa to 140MPa, and thus the theoretical criterionfor selection the compacting pressure of the nanocrystalline ZrO2 powders can be provided.