Friction powder compaction process for fabricating open-celled porous Cu by

• Material Type: 文書・図像類
• Title: Friction powder compaction process for fabricating open-celled porous Cu by
• Author/Editor: Hangai, Yoshihiko; Zushida, Kousuke; Fujii, Hidetoshi; Ueji, Rintaro; Kuwazuru, Osamu; Yoshikawa, Nobuhiro
• Author Heading: Hangai, Yoshihiko; Zushida, Kousuke; Fujii, Hidetoshi; Ueji, Rintaro; Kuwazuru, Osamu; Yoshikawa, Nobuhiro
• Publication, Distribution, etc.: Elsevier
• Publication Date: 2013
• Publication Date (W3CDTF): 2013
• Periodical title: Materials Science and Engineering A
• No. or year of volume/issue: 585
• Volume: 585
• Pages: 468-474
• Text Language Code: eng
• Subject Heading: cellular materials; powder metallurgy; sintering; tomography; mechanical characterization
• Target Audience: 一般
• Note (General): Open-celled porous metals have received considerable attention in various fields and are expected to be used as engineering materials where heat exchange, sound absorption and filtration are required. In this study, porous Cu specimens with NaCl volume fractions of 60, 70 and 80% were successfully fabricated by the friction powder compaction (FPC) process with the sintering and dissolution process (SDP) using NaCl as space holders. In the FPC process, no external heat source was used for fabricating porous Cu except for the friction heat generated by the rotating tool plunged into the die and powders. From the X-ray CT and SEM observation of the pore structures of the fabricated porous Cu, it was found that almost the entire specimen had a pore structure similar to the NaCl morphology, regardless of the NaCl volume fraction. This is mainly because the sintering process for Cu particles in the FPC process was achieved at a temperature lower than the melting point of NaCl. From compression tests of the fabricated porous Cu, porous Cu exhibited ductile fracture regardless of its NaCl volume fraction, which is considered to be attributed to the good bonding between Cu particles. The plateau stress and energy absorption decreased with increasing NaCl volume fraction, indicating strong relationships between them. The porous Cu with the highest energy absorption per unit volume up to the specific stress changed from the high-NaCl-volume-fraction porous Cu to the low-NaCl-volume-fraction porous Cu with increasing compression stress. Consequently, it was shown that the mechanical properties of porous Cu can be controlled by adjusting the volume fraction of NaCl.
• Access Restrictions: 限定公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ