Improvement of Frictional Wear Property of Lead-free Bronze Castings by Lamellar Eutectoid Structure
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- Funaki Katsuyuki
- Industrial Research Institute of Ishikawa
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- Minamikawa Toshiharu
- Industrial Research Institute of Ishikawa
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- Okane Toshimitu
- National Institute of Advanced Industrial Science and Technology
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- Kobayashi Takeshi
- Professor Emeritus, Kansai University
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- Maruyama Touru
- Faculty of Chemistry, Material and Bioengineering, Kansai University
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- Akashi Takafumi
- Akashi Gohdoh Incorporated
Bibliographic Information
- Other Title
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- 層状共析組織による鉛フリー青銅鋳物の摩擦摩耗特性の向上
- ソウジョウ キョウセキ ソシキ ニ ヨル ナマリ フリー セイドウ イモノ ノ マサツ マモウ トクセイ ノ コウジョウ
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Description
As the substitute of lead bronze, a metallic structure control technique applying eutectoid transformation was employed to develop lead-free or low lead copper alloys for bearings. Considerable lamellar eutectoid structures made of copper-tin based intermetallic compound and copper solid solution containing fine bismuth precipitates were dispersed in as-cast alloys by means of an alloy design technique. The lamellar eutectoid structure was formed between primary α dendrite arms after transformation of a part of β phase without producing granular δ phases. In the range of tin content from 4 to 12mass%, the amount of the eutectoid structure was linearly increased with the tin content. Above 12mass%, the amount of the eutectoid was decreased with increasing tin content. Alloys containing the lamellar eutectoid structure showed higher anti-seizing and higher abrasion resistances than those of the lead bronze LBC3, suggesting that the formation of the laminate composite structure and precipitation of fine bismuth particles produce excellent wear-resistance.
Journal
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- Journal of Japan Foundry Engineering Society
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Journal of Japan Foundry Engineering Society 83 (9), 513-518, 2011
Japan Foundry Engineering Society
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Keywords
Details 詳細情報について
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- CRID
- 1390282681487497856
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- NII Article ID
- 10029579874
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- NII Book ID
- AN10514770
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- ISSN
- 21855374
- 13420429
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- NDL BIB ID
- 11233087
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed