抄録
A long-thin cylider shaped compact was formed from MgO granule admixed with BINDCERAM, toluene and liquid paraffin by a single action tooling of flow compaction. The green density increased according to the liquid paraffin content and the sitered density of relative density 99% to MgO real density 3.58 g/cm3 was gotten by admixing 2 mass% BINDCERAM, 8 mass% toluene and 8 mass% liquid paraffin. This is caused by the reason that liquid paraffin affects a higher volume ratio of MgO powder in green compact. In the case of green compact formed from granule with sufficient flowability by admixing 8 mass% liquid paraffin, the powder flowed from higher densified upper portion to lower in a die cavity during a single action tooling and the difference in local density in green compact could be reduced. Therefore, the diameter of sintered compact was shrunk uniformity from green compact and the dimensional precision of sintered compact was improved if though the shrinkage of diameter was 17%.
