成果報告書詳細
管理番号20110000000819
タイトル*平成22年度中間年報 希少金属代替材料開発プロジェクト 超軽量高性能モータ等向けイットリウム系複合材料の開発(1)
公開日2011/8/5
報告書年度2010 - 2010
委託先名産業用超電導線材・機器技術研究組合
プロジェクト番号P08023
部署名エネルギー対策推進部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等
研究開発項目【1】「超長尺イットリウム系複合材料における希少金属使用量低減技術開発」
本研究開発項目では、長尺線材実績(500 m 長-I c≧300 A/cm 幅(@77 K, 自己磁場))のあるエキシマレーザを用いたPLD 法及びTFA-MOD 法を選択し、超長尺複合材料で高特性を実現するための作製プロセス技術開発を行っている。
エキシマレーザを用いたPLD 法における開発では、作製する複合材料の長さが長くなるにしたがって特性の低下が生じてしまう課題を解決する必要がある。そのために、ホットウォール型成膜システムを選定することで高速移動に対応し、さらに複数の原料ターゲットをチャンバー内で交換可能なシステム及び大口径のリールに対して一定の張力を付与するトルク制御システムを導入したPLD 装置を設計、製作した。当該装置を導入後に、装置の基本動作を確認し、超電導層成膜環境を整えた。
英文要約Title: The Rare Metal Substitute Materials Development Project. 9-(2) Development of New Permanent Magnets Substituting for Nd-Fe-B Magnets and Development of Yttrium-based Compound. Development of Yttrium-based Composite Material for Ultra-light and High-performance Motors (FY2009-FY2011) FY2010 Annual Report (Industrial Superconductivity Technology Research Association) [Theme 1 ”Development of long Y-based composite materials for reduction of RE metals consumption”] In order to develop the fabrication processing for realizing an extremely long composite tape, large scale apparatuses for both the PLD (Pulsed Laser Deposition) and the MOD (Metal Organic Deposition) methods were designed and installed. In the PLD process, the hot-wall system PLD was selected and multi-target system was added. On the other hand, the simulation of mechanical strength of the support arm for a large drum, temperature distribution in the furnace and the gas flow in the chamber were taken place for designing of the MOD batch-type apparatus. The basic performances of the new large apparatuses such as the tape transferring system and temperature distribution were confirmed. The suitable condition for fabricating long tape will be investigated to achieve the project goals. [Theme 2 ” Improvement of material (Rare metals) yields in fabrication process of Y-based composite materials”] The processing, which do not have the results of the long composite fabrication but are expected as the higher yield ones, are selected and developed. In the development of the Laser CVD (Chemical Vapor Deposition) method, the liquid source system was adopted and Reel-to-Reel system was designed and installed. The high Jc value of 2 MA/cm^2 was confirmed using the newly installed apparatus. YAG laser PLD process was also developed. A continuous fabrication system was installed and the high Jc film was successfully deposited in the high material yield over 40%. [Theme 3 ” Preliminary R&D on rotating machines using Y-based composite materials.”] The rotating machine making full use of composite characteristics has been designed and evaluated. When composite tapes with 300A/cm-width Ic level are used, it was found that the used amount of rare earth in the rotating machine with the composite electrical magnet was reduced smaller than one tenth of those in that with permanent magnet. Furthermore, if the higher Ic tapes (600A/cm-width) could be used, the effect is stronger to one eightieth. In parallel, the model coil using the composite tapes was tried to make based on the shape proposed by the above mentioned design, which has a high packing factor. The high current up to the Ic value was supplied to the coil and the reasonable field generation was confirmed. Additionally, the cooling system using the idea of thermo-siphon principle has been also developed. The trial manufacture of the cooling system was made and prepared to evaluate the cooling parameters such as the heat transfer coefficient.
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