Synthesis of New Hydrides in Mg-Y Systems by Using High Pressure

• Goto Yasuyuki

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Kamegawa Atsunori

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Takamura Hitoshi

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Okada Masuo

  Department of Materials Science, Graduate School of Engineering, Tohoku University

抄録

A new hydride in the MgH₂–YH₃ system was found by using a high pressure of 5 GPa, and their crystal structure, thermal stability and hydrogen content were studied. The high-pressure synthesis was carried out at 1073 K for 2 h under 5 GPa by using an anvil-type apparatus. In the MgH₂–xat%YH₃ system (x=33–100), novel hydride was synthesized near x=67 (MgY₂H_y). This phase exhibited a FCC-type structure with a cell parameter of a=0.516 nm. This high-pressure phase was dehydrogenated at about 600 K under an Ar atmosphere of 0.05 MPa, and the FCC structure was maintained after dehydrogenation. The amount of hydrogen desorbed at about 600 K was 1.4 mass%.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (11), 2717-2720, 2002

  公益社団法人 日本金属学会

キーワード

• high pressure
• hydride
• Magnesium-Yttrium

詳細情報

• CRID: 1390282679224889472
• NII論文ID: 130004451714
• NII論文ID: 10012327872
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.43.2717
• COI: 1:CAS:528:DC%2BD3sXjtFen
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6367059
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6367059
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/11/43_11_2717/_pdf
• 本文言語コード: en
• データソース種別:
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