先端エンジニアリング材料における希土類元素：応用・熱力学的挙動・加工・機械的性能に関する批判的レビュー
Rare Earth Elements in Advanced Engineering Materials: A Critical Review of Applications, Thermodynamic Behavior, Processing and Mechanical Performance (原題)
Abdullah Bingöl, Erdem Işık, İhsan Dağtekin, Nevin Çelik
🤖 gxceed AI 要約
日本語
希土類元素（REE）17元素の応用・熱力学・加工・機械特性を横断的にレビューした論文。EV・風力・再エネ拡大に伴いNd・Pr・Dy・Tbなど永久磁石向け需要が急増し、NdFeBやSm-Co磁石が電動機・発電機・防衛・風車で高効率を支えると整理する。抽出・分離の困難さと供給リスクから、リサイクル・代替材料・持続可能な採掘の重要性を結論づける。
English
A critical review of the 17 rare earth elements covering applications, thermodynamics, processing and mechanical performance. It argues the energy transition—EVs, wind turbines, renewables—has sharply raised demand for Nd, Pr, Dy and Tb in NdFeB and Sm-Co permanent magnets used in motors, generators and defense systems. Given extraction difficulties and supply risk, recycling, substitute materials and sustainable mining are flagged as increasingly important.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は希土類のほぼ全量を輸入依存し、EV・風力用磁石の調達は経済安全保障と直結する。資源調達リスクとリサイクル技術の論点は、日本企業のサプライチェーン強靱化やGX投資判断の背景情報として読める。
In the global GX context
Rare earth supply concentration is a recognized chokepoint for the global energy transition, and this review consolidates the material science underpinning magnet demand. It offers international readers a technical baseline for supply-chain risk and circularity debates relevant to transition planning, though it adds no new disclosure or policy analysis.
👥 読者別の含意
🔬研究者:希土類磁石の材料特性とエネルギー転換需要の関係を俯瞰する基礎資料になる。
🏢実務担当者:EV・風力関連製品の磁石調達リスクとリサイクル対応を検討する際の技術的背景として使える。
🏛政策担当者:希土類の供給リスクと資源循環政策の必要性を裏づける材料面の根拠として参照できる。
📄 Abstract（原文）
Rare earth elements (REEs) consist of a group of 17 elements, including the lanthanides together with scandium and yttrium, which are chemically similar yet critically important due to their wide range of applications. Classified as light and heavy rare earth elements, this group has become indispensable in modern high-technology products owing to their unique magnetic, optical, catalytic, electrical, and mechanical properties. Although some REEs are relatively abundant in the Earth’s crust, they are referred to as “rare” due to difficulties in extraction and separation as well as their distinctive geochemical behavior. The global energy transition has significantly increased the demand for rare earth elements, driven by the rapid expansion of electric vehicles, wind turbines, and renewable energy technologies. In particular, elements such as neodymium, praseodymium, dysprosium, and terbium play a critical role in the production of permanent magnets. NdFeB- and Sm–Co-based magnets provide high efficiency in electric motors, generators, defense systems, wind turbines, and electronic devices. In conclusion, rare earth elements hold strategic importance in improving energy efficiency, enabling environmentally friendly technologies, and advancing modern engineering materials. Due to increasing demand and supply risks, recycling, alternative material development, and sustainable mining approaches are expected to become increasingly important in the future.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.18185/erzifbed.1980464first seen 2026-10-21 04:34:51
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