226 粒度分布制御によるアトマイズ鉄粉の焼結体の諸特性の改善(粉末成形とその評価(1),ものづくりにおける基礎研究と先端技術の融合)

DOI Web Site

書誌事項

タイトル別名
  • 226 Characteristic improvements of sintered compacts by controlling particle size distribution of atomized ferrous alloy powders

抄録

Effect of particle size distribution on the density and shrinkage of atomized ferrous alloy powder compacts were investigated by controlling particle size distribution of the two bimodal ferrous alloy powders (-25μm / 125-150μm, 25-46μm / 125-150μm). These powders were sintered at 1473K in vacuum after compacted at the pressure of 490MPa. As a result, the sintered compact of -5μm / 125-150μm bimodal powder with fine powder content of 35 mass% showed higher density and lower shrinkage ratio than those of other powder compacts. The improvement of particle packing depends strongly on the size ratio, mixing compositions of the fine to coarse powder. The density increase by the fine powder addition is considered to improve the mechanical properties of the sintered compacts without further addition of alloying elements.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ