銅製自動車ラジエータの腐食と防食

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  • 志賀 章二
    古河電気工業株式社会研究開発本部横浜研究所

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タイトル別名
  • Corrosion of Copper/Brass Automotive Radiator Materials and their Improvements
  • ドウセイ ジドウシャ ラジエータ ノ フショク ト ボウショク

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抄録

Copper/Brass automotive radiators, which was given birth along with auto-vehicles, have remarkably enhanced performance, that is regarded as the results of recent technical development in both material and designing sides. Within auto-vehicles and their components, radiators are exposed to special and severe environmental conditions such as large temperature cycling as well as salts and exhausted gases direct to outer surfaces and coolants to inner surfaces. In this paper, delineated is the status quo on major corrosion phenomena and their relating factors, their testing methods and material improvements as follows; (1) Dezincification of brass tube and its prevention by modified brasses. (2) Stress corrosion cracking of brass and its prevention. (3) Salt corrosion of high-copper fin and its prevention. (4) Solder corrosion.

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