Abstract
Densification behavior of three representative a-Fe2O3 powders, which were chosen referring to the results of previous works, has been studied. Incorporation of plastic powder into powder compacts revealed that there exists a critical pore size which determines the final density. Effect of ball-milling of aggregated powder on sintering has been interpreted in terms of the behavior of intra-aggregate pores. Rate of heating has little effect on the densification but influences the grain growth.
