論文

査読有り
2015年2月

Criticality Assessment of Metals for Japan's Resource Strategy

MATERIALS TRANSACTIONS
  • Hiroki Hatayama
  • ,
  • Kiyotaka Tahara

56
2
開始ページ
229
終了ページ
235
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2320/matertrans.M2014380
出版者・発行元
JAPAN INST METALS

Criticality assessment of metals has been developed to analyze a country's supply risk and vulnerability to supply restriction. This study presents Japan's criticality of 22 metals during 2012. Whereas a past assessment focused only on minor metals, evaluation targets here included both common and minor metals. In addition, a new analytic method included mineral interest sufficiency as a criticality component. The evaluation framework developed in this study included 13 criticality components within five risk categories: supply risk, price risk, demand risk, recycling restriction, and potential risk. Weighting factors were used to aggregate components into a single score. This framework reflects a recent government announcement about Japan's resource strategy. High criticality was found for neodymium, dysprosium, and indium due to a recent increase in demand. Niobium also had high criticality due to production concentration in Brazil. There were few differences in the aggregated criticality scores between the other minor metals and common metals. For minor metals, aggregated criticality was mainly increased by production concentration and recycling difficulty. For common metals, aggregated criticality was increased by short depletion time and growth in global mine production. Compared with a previous study, in 2012 the criticality of tungsten and tantalum were lower due to reduced domestic demand. The analytic methods and results presented in this study will be useful in developing Japan's resource strategy.

Web of Science ® 被引用回数 : 46

リンク情報
DOI
https://doi.org/10.2320/matertrans.M2014380
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000351650100010&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-84921780168&partnerID=MN8TOARS
URL
http://orcid.org/0000-0001-9830-3816
ID情報
  • DOI : 10.2320/matertrans.M2014380
  • ISSN : 1345-9678
  • eISSN : 1347-5320
  • ORCIDのPut Code : 45478046
  • SCOPUS ID : 84921780168
  • Web of Science ID : WOS:000351650100010

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