Effect of CaCO₃ Foaming Agent at Formation and Stabilization of Al-Based Foams Fabricated by Powder Compact Technique

• Byakova Aleksandra V.

  Institute for Problems of Materials Science, National Academy of Sciences of Ukraine

• Gnyloskurenko Svyatoslav V.

  Physical-Technological Institute of Metals and Alloys, National Academy of Sciences of Ukraine

• Nakamura Takashi

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

書誌事項

タイトル別名

• Effect of CaCO₃ Foaming Agent at Formation and Stabilization of Al-Based Foams Fabricated by Powder Compact Technique

抄録

The paper presents the results obtained by in situ observation of Al-based foams formation at heating of powder compacts with calcium carbonate (CaCO₃) by comparing with those prepared with conventional titanium hydride (TiH₂). Foamable precursors comprising powder of either pure aluminium or AlZnMg-alloy were used for detailed investigation of foam evolution and stability. High temperature X-ray furnace was applied for in situ visualization of foam formation. It was identified that expansion and stability of foams with CaCO₃ are much superior to those with TiH₂. Distribution and size of solid inclusions (network of oxide remnants, particles of foaming agent, secondary reaction products, and solid oxide skin) in the cell wall materials of studied foams as well as relevant wetting data were determined to clarify the difference in foams stability. Improved stability of foams with CaCO₃ is explained on the base of stabilizing models developed by Kaptay by assuming an interfacial force, the disjoining pressure, which efficiency is variable and dependent on the distribution and wetting behaviour of the clustered oxide network/solid particles in foamy melt.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 58 (2), 249-258, 2017

  公益社団法人 日本金属学会

キーワード

• aluminium foam
• stability
• X-ray observation
• particle size
• particle distribution
• wettability

詳細情報

• CRID: 1390282679231097728
• NII論文ID: 130005297151
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2016314
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 027872014
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027872014
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/58/2/58_M2016314/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可