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海軍黃銅HSn62?1的長期大氣腐蝕行為
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-11-03
通過在3種典型大氣環境中進行為期20年的現場暴露試驗，研究海軍黃銅HSn62?1的腐蝕質量損失和力學性能損失，采用掃描電子顯微鏡和XRD觀察和分析腐蝕外貌、橫截面和腐蝕產物。
海軍黃銅HSn62?1的長期大氣腐蝕行為Long-term atmospheric corrosion behavior of naval brass HSn62?1
通過在3種典型大氣環境中進行為期20年的現場暴露試驗，研究海軍黃銅HSn62?1的腐蝕質量損失和力學性能損失，采用掃描電子顯微鏡和XRD觀察和分析腐蝕外貌、橫截面和腐蝕產物。結果表明：HSn62?1的長期大氣腐蝕質量損失隨暴露時間的關系遵循C=KTn，腐蝕質量損失在工業酸雨大氣環境中最大，在海洋大氣環境中最小；腐蝕速率在工業酸雨和海洋大氣環境中隨時間逐漸降低，而在半鄉村大氣中逐漸升高；暴露20年后，HSn62?1的力學性能損失在工業酸雨大氣環境中最大，在半鄉村環境中最小；HSn62?1在3種典型大氣環境中均發生脫鋅腐蝕，腐蝕產物主要為Cu2O和ZnO。
Atmospheric corrosion behavior of naval brass HSn62?1 was investigated in three typical atmospheres in China over 20 years. Mass loss and mechanical property loss were measured, and the appearance, cross-section and corrosion products were observed and analyzed by scanning electronic microscope and XRD. The results show that the mass loss data with exposure time obeys well with power function C=KT n, the mass loss is the highest in industrial atmosphere and the lowest in tropical marine atmosphere. The corrosion rate decreases with time in industrial atmosphere and tropical marine atmosphere, and increases with time in semi-rural atmosphere. After being exposed for 20 years, the mechanical property loss of HSn62?1 is the highest in industrial atmosphere and the lowest in semi-rural atmosphere. The dezincification of HSn62?1 occurs in all the three typical atmospheres, and the main corrosion products are Cu2O and ZnO.
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