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| 講演名 | 2012-12-01 13:50 Effect of Lubricant on Lifetime of Au-plated Slip-Ring and Ag-Pd-Cu Brush System for Small Electric Power -2- ○Hideki Kitajima・Koichiro Sawa・Takahiro Ueno（Nippon Inst. of Tech.）  EMD2012-84 |
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| 抄録 | （和） | Abstract The authors have been investigating degradation process of Au plated slip ring and Ag-Pd-Cu brush system. In almost all cases the lifetime of the sliding system ends, when Au plating layer is worn out, the ring surface is oxidized to be black in color and contact resistance becomes very high. Further, the lifetime is very short without lubricant. So, the lubricant is very effective to make the lifetime longer. However, even with lubricant the lifetime is varied from about 1000 hours to almost 7000 hours in the past experiments. It is an important issue how the lubricant works on the lifetime of the system. In this paper the effect of lubricant on the degradation process of contact resistance is focused on. In the past tests the lubricant is supplied only once before the test. In this test the lubricant is regularly supplied almost every 1000 operation hours. Consequently, the operation more than 9000 hours is realized, which is the longest among tests so far. In addition the contact voltage drop stays almost constant around 50mV and after that contact voltage drop increase gradually until 5000 hours. According to the Element Analysis after the test the Ni base plating layer is totally exposed in many tracks. It means that the Au plating layer is gradually worn out probably at the stage of increasing voltage drop. In the previous tests the lifetime ended even when the Ni plating layer remained. So, the reason of long operation in this test is guessed to be that the lubricant not only decreases wear of ring and brush, but also suppresses oxidation of the Ni layer. |
| （英） | Abstract The authors have been investigating degradation process of Au plated slip ring and Ag-Pd-Cu brush system. In almost all cases the lifetime of the sliding system ends, when Au plating layer is worn out, the ring surface is oxidized to be black in color and contact resistance becomes very high. Further, the lifetime is very short without lubricant. So, the lubricant is very effective to make the lifetime longer. However, even with lubricant the lifetime is varied from about 1000 hours to almost 7000 hours in the past experiments. It is an important issue how the lubricant works on the lifetime of the system. In this paper the effect of lubricant on the degradation process of contact resistance is focused on. In the past tests the lubricant is supplied only once before the test. In this test the lubricant is regularly supplied almost every 1000 operation hours. Consequently, the operation more than 9000 hours is realized, which is the longest among tests so far. In addition the contact voltage drop stays almost constant around 50mV and after that contact voltage drop increase gradually until 5000 hours. According to the Element Analysis after the test the Ni base plating layer is totally exposed in many tracks. It means that the Au plating layer is gradually worn out probably at the stage of increasing voltage drop. In the previous tests the lifetime ended even when the Ni plating layer remained. So, the reason of long operation in this test is guessed to be that the lubricant not only decreases wear of ring and brush, but also suppresses oxidation of the Ni layer. |
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| キーワード | （和） | / / / / / / / |
| （英） | slip ring / Au plating / Ni base plating / Ag-Pd brush / lifetime / lubricant / / | |
| 文献情報 | 信学技報, vol. 112, no. 332, EMD2012-84, pp. 113-118, 2012年11月. | |
| 資料番号 | EMD2012-84 | |
| 発行日 | 2012-11-23 (EMD) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| 著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します．(許諾番号：10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| PDFダウンロード | EMD2012-84 |
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| 研究会情報 | |
| 研究会 | EMD |
| 開催期間 | 2012-11-30 - 2012-12-01 |
| 開催地（和） | 千葉工業大学 |
| 開催地（英） | Chiba Institute of Technology |
| テーマ（和） | 国際セッションIS-EMD2012(継電器・コンタクトテクノロジ研究会共催） |
| テーマ（英） | International Session IS-EMD2012 |
| 講演論文情報の詳細 | |
| 申込み研究会 | EMD |
| 会議コード | 2012-11-EMD |
| 本文の言語 | 英語 |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Effect of Lubricant on Lifetime of Au-plated Slip-Ring and Ag-Pd-Cu Brush System for Small Electric Power -2- |
| サブタイトル（英） | |
| キーワード(1)（和/英） | / slip ring |
| キーワード(2)（和/英） | / Au plating |
| キーワード(3)（和/英） | / Ni base plating |
| キーワード(4)（和/英） | / Ag-Pd brush |
| キーワード(5)（和/英） | / lifetime |
| キーワード(6)（和/英） | / lubricant |
| キーワード(7)（和/英） | / |
| キーワード(8)（和/英） | / |
| 第1著者 氏名（和/英/ヨミ） | 北島 英毅 / Hideki Kitajima / キタジマ ヒデキ |
| 第1著者 所属（和/英） | 日本工業大学 (略称： 日本工大) Nippon Institute of Technology (略称： Nippon Inst. of Tech.) |
| 第2著者 氏名（和/英/ヨミ） | 澤 孝一郎 / Koichiro Sawa / サワ コウイチロウ |
| 第2著者 所属（和/英） | 日本工業大学 (略称： 日本工大) Nippon Institute of Technology (略称： Nippon Inst. of Tech.) |
| 第3著者 氏名（和/英/ヨミ） | 上野 貴博 / Takahiro Ueno / ウエノ タカヒロ |
| 第3著者 所属（和/英） | 日本工業大学 (略称： 日本工大) Nippon Institute of Technology (略称： Nippon Inst. of Tech.) |
| 講演者 | 第1著者 |
| 発表日時 | 2012-12-01 13:50:00 |
| 発表時間 | 20分 |
| 申込先研究会 | EMD |
| 資料番号 | EMD2012-84 |
| 巻番号（vol） | vol.112 |
| 号番号（no） | no.332 |
| ページ範囲 | pp.113-118 |
| ページ数 | 6 |
| 発行日 | 2012-11-23 (EMD) |
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