{"created":"2023-06-20T15:10:19.056981+00:00","id":39901,"links":{},"metadata":{"_buckets":{"deposit":"1e4bf781-920a-44d3-adf7-b501539d6322"},"_deposit":{"created_by":1,"id":"39901","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"39901"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00039901","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["445568","445565","445567","445570","445571","445566","445564","445569"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Friction, wear and electric characteristics of slip-ring brush materials for space applications. Part 2: Evaluation by slip-ring simulation tests"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996-11","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"66","bibliographicPageStart":"1","bibliographicVolumeNumber":"1315","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所報告"},{"bibliographic_title":"Technical Report of National Aerospace Laboratory","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"宇宙用スリップリングとして最適なブラシ材料を見いだすために、ホットプレス法で作製した銀-二硫化モリブデン-セレン化ニオブ(Ag-MoS2-NbSe2)系複合ブラシ材の摩耗、通電特性を真空中で評価した。試験は、スリップリングのブラシとリングの接触状態を模擬したモデル試験機を用いて行い、相手リング材には貨幣銀(Ag-10Cu)および純銀(Ag)を用いた。まず、ブラシとリングの接触荷重を0.2N、0.6N、1Nに変化させ、通電量1A、すべり速度75mm/sで摩耗、通電特性を評価した。荷重を増すと、接触抵抗、電気ノイズが減少し、またブラシ摩耗も小さくなった。荷重の増加に伴い、ブラシ/リングの接触状態が良好になったことが、良好な性能につながったものと考えられる。次に、MoS2とNbSe2の配合比を変えた4種類のAg-MoS2-NbSe2系複合ブラシ材の摩耗、通電特性を、通電量を1Aから20Aまで変化させ、荷重1Nで評価した。低電流通電(1A)、大電流通電(20A)のいずれの場合にも、85重量％Ag-12.5重量％MoS2-2.5重量％NbSe2ブラシとAgリングの組合わせが最も良好な性能を示した。このブラシ/リングの組合わせは電気信号伝達用、電力伝達用のいずれのスリップリングとしても適している。さらに、スリップリングの大電流化を達成するための要因を明らかにするため、最適組成の85重量％Ag-12.5重量％MoS2-2.5重量％NbSe2ブラシ材を用いて、電流密度を現用の人工衛星の電力伝達用スリップリングの約16倍である800A/平方センチメートルまで増した実験を行った。電流密度を増すと、接触抵抗、電気ノイズ、ブラシ摩耗、ブラシの温度上昇が極めて増加した。しかし、ブラシ/リング間の接触面圧を増やすことにより、大電流通電下においても接触抵抗と電気ノイズを小さく抑えられることが分かった。電流密度800A/平方センチメートルにおいても良好な摩耗、通電特性を、接触面圧90N/平方センチメートルで達成することができた。最後に、宇宙用スリップリングの地上試験が窒素ガス中で行われることを想定し、窒素ガス中における摩耗、通電特性を評価した。窒素ガス中では、真空中に比べ、接触抵抗、電気ノイズ、ブラシ摩耗のいずれもが大きくなった。ただし、窒素ガス中で摺動させた後でも、雰囲気を真空に変化させると真空中本来の良好な性能を示した。本研究で試作したAg-MoS2-NbSe2系複合ブラシ材とAgリングの組合わせ時の摩耗、通電特性は、現在、人工衛星で使用されているスリップリングに比べても良好であり、特に大電流密度において通電が可能である。本ブラシ材は、大電力化、小型軽量化、長寿命化が要求される今後の将来型宇宙ステーションや宇宙プラットホームなどの宇宙用スリップリング材料として有望である。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Wear and electric characteristics of hot-pressed Ag-MoS2-NbSe2 composites were evaluated in a vacuum environment in order to find the optimum brush material of a slip-ring for space applications. The composite brush was rubbed against a coin silver ring or a silver ring, simulating a brush/ring contact of a slip-ring. First, the effect of the contacting load was evaluated under an electric current of 1 A and a sliding speed of 75 mm/s. The loads tested were 0.2 N, 0.6 N and 1 N. The increase in load resulted in lower electrical contact resistance and noise, and less wear. Better contact between the brush and the ring seemed to be responsible for the good performance. As the second step of the study, Ag-MoS2-NbSe2 composites with different contents of MoS2 and NbSe2 were evaluated under a load of 1 N and an electric current of from 1 A to 20 A. The best performance was obtained with an 85 wt-percent Ag + 12.5 wt-percent MoS2 + 2.5 wt-percent NbSe2 composite brush and a silver ring under both low-current (1A) and high-current (20A) conditions. The result demonstrated that this brush/ring combination is relevant for both a signal slip-ring and a power slip-ring. As the third step, the electric current density was increased up to 800 A/sq cm, 16 times higher than that used for current power slip-rings, to examine the feasibility of the best brush/ring material combination for future use as a high-power-transmission slip-ring. Electrical contact resistance, electrical noise, and temperature and wear of the brush became extremely high as the electric current density increased. However, increasing the contact pressure of the brush was found to be very effective in lowering the electrical contact resistance and noise at high current density conditions. A high-electric current density of 800 A/sq cm, with good electrical and wear resistance performance, was achieved at a contact pressure of 90 N/sq cm. Finally, the performance in nitrogen gas was examined because ground tests of a slip-ring for space use are carried out in nitrogen gas. Electrical contact resistance and noise, and wear of the brush were all higher in nitrogen gas than in a vacuum. However, the good performance was recovered when the environment was changed from nitrogen gas to a vacuum. The performance obtained with the selected 85 wt-percent Ag + 12.5 wt-percent MoS2 + 2.5 wt-percent NbSe2 composite brush and a silver ring was superior to that of slip-rings currently used for satellites, especially in terms of high-power transmission capability. The composite brush material developed in this study is a promising candidate for a high-power, small-sized, lightweight and long-lived slip-ring for future use in the space program to accommodate the increased power requirements.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0000879000","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: NAL TR-1315","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"航空宇宙技術研究所"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Aerospace Laboratory (NAL)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0389-4010","subitem_source_identifier_type":"ISSN"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"航空宇宙技術研究所 宇宙研究グループ"},{"subitem_text_value":"三菱電機"},{"subitem_text_value":"法政大学 工学部"},{"subitem_text_value":"三菱電機"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Space Technology Research Group"},{"subitem_text_language":"en","subitem_text_value":"Mitsubishi Electric Corporation"},{"subitem_text_language":"en","subitem_text_value":"Hosei University College of Engineering"},{"subitem_text_language":"en","subitem_text_value":"Mitsubishi Electric Corporation"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"鈴木, 峰男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"渡邊, 幹男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西村, 允"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"中川, 潤"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Suzuki, Mineo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Mikio","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nishimura, Makoto","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nakagawa, Jun","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-27"}],"displaytype":"detail","filename":"naltr01315.pdf","filesize":[{"value":"45.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr01315.pdf","url":"https://jaxa.repo.nii.ac.jp/record/39901/files/naltr01315.pdf"},"version_id":"87edfd50-01a9-4dc3-bff0-1c71a903b4d8"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"スリップリング","subitem_subject_scheme":"Other"},{"subitem_subject":"ブラシ材","subitem_subject_scheme":"Other"},{"subitem_subject":"摩擦","subitem_subject_scheme":"Other"},{"subitem_subject":"摩耗","subitem_subject_scheme":"Other"},{"subitem_subject":"電気接触抵抗","subitem_subject_scheme":"Other"},{"subitem_subject":"摺動特性","subitem_subject_scheme":"Other"},{"subitem_subject":"大電流通電","subitem_subject_scheme":"Other"},{"subitem_subject":"ブラシ・リング接触","subitem_subject_scheme":"Other"},{"subitem_subject":"二硫化モリブデン","subitem_subject_scheme":"Other"},{"subitem_subject":"MoS2","subitem_subject_scheme":"Other"},{"subitem_subject":"セレン化ニオブ","subitem_subject_scheme":"Other"},{"subitem_subject":"NbSe2","subitem_subject_scheme":"Other"},{"subitem_subject":"銀ベース複合材","subitem_subject_scheme":"Other"},{"subitem_subject":"接触荷重","subitem_subject_scheme":"Other"},{"subitem_subject":"接触抵抗","subitem_subject_scheme":"Other"},{"subitem_subject":"slip ring","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"brush material","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"friction","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"wear","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"electrical contact resistance","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sliding characteristics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"high power transmission","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"brush ring contact","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"molybdenum disulfide","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"MoS2","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"niobium diselenide","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"NbSe2","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"silver based composite","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"contact load","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"contact resistance","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"宇宙用スリップリング材の摩擦、摩耗、通電特性に関する研究　第2報:スリップリングモデル機による摺動特性の評価","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"宇宙用スリップリング材の摩擦、摩耗、通電特性に関する研究　第2報:スリップリングモデル機による摺動特性の評価"}]},"item_type_id":"3","owner":"1","path":["1893","1917"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"39901","relation_version_is_last":true,"title":["宇宙用スリップリング材の摩擦、摩耗、通電特性に関する研究　第2報:スリップリングモデル機による摺動特性の評価"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T19:18:21.739425+00:00"}