アルミニウムはんだ付部の耐食性について(第2報)
書誌事項
- タイトル別名
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- Corrosion Resistance of Soldered Joints in Aluminum (2nd Report)
抄録
The corrosion currents of zinc and Al-Sn alloy due to contact with dissimilar metals, such as aluminum or tin, were measured in 3% NaCl aqueous solution at 25°C. In those cells, furthermore, the effects of the ratio of electrode areas on the corrosion current were investigated. Based on the results of these measurements, an analysis for the corrosion current density of each alloy, which was shown in the previous report, was made to explore the structural factors of that. The results obtained from this methodical analysis are summarized as follows<BR>(1) The corrosion current densities of Zn-Al alloy and Zn-Sn alloy could be approximately expressed as the sum of the corrosion current density of zinc only that acts as anode on the alloy constituents added to the corrosion current density of zinc in contact with another metal contained in each alloy.<BR>(2) As the corrosion behaviour of Al-Sn alloy, the galvanic cell of which anode component was the aluminum of binary eutectic and cathode components were both the tin of eutectic and the aluminum of primary crystal on the alloy system was considered to be formed. The calculated current density of such anode was about 3.6 mA/cm2.<BR>(3) On the corrosion of tin-soldered joint in aluminum, the joint failure life introduced with an electrolytically calculating method by using the above mentioned value was coincident with the phenomena observed in our experiments. It was presumed, therefore, that the interfacial failure of such joint occurred along the aluminum of eutectic included in the interfacial layer that forms at between base metal and solder.
収録刊行物
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- 溶接学会誌
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溶接学会誌 38 (9), 1051-1056, 1969
一般社団法人 溶接学会
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詳細情報 詳細情報について
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- CRID
- 1390282681479283072
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- NII論文ID
- 130003763120
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- ISSN
- 18837204
- 00214787
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可