Effect of addition of NiO powder on pore formation in lotus-type porous carbon steel fabricated by continuous casting

Makoto Kashihara*, Hiroshi Yonetani, Shinsuke Suzuki, Hideo Nakajima

*この研究の対応する著者

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Lotus-type porous carbon steel (lotus carbon steel) plates were fabricated by continuous casting technique in a pressurized nitrogen atmosphere. The experiments were done both with adding 0.3wt% of NiO powder in molten carbon steel in a ceramic crucible and without NiO powder. The lotus carbon steel fabricated without NiO powder under nitrogen pressures of 0.1 and 0.5 MPa had single pores which grew independently. On the other hand, the lotus carbon steel fabricated with adding NiO powder had pores which coalesced each other and became in irregular shapes. Under nitrogen pressure of 2.5 MPa, the pores formed with adding NiO powder were smaller than that formed without NiO powder. The porosity increased by adding NiO powder in every pressurized nitrogen atmosphere. From these results, NiO powder in molten carbon steel is considered to act as nucleation sites for pores at the solid-liquid interface and to increase of the pore number.

本文言語English
ホスト出版物のタイトルEco-Materials Processing and Design XI, ISEPD-11
出版社Trans Tech Publications Ltd
ページ215-219
ページ数5
ISBN(印刷版)0878492445, 9780878492442
DOI
出版ステータスPublished - 2010

出版物シリーズ

名前Materials Science Forum
658
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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