螺旋桨用铜合金在3.5%NaCl溶液中的空蚀和冲蚀行为  

Cavitation Erosion and Erosion-Corrosion Behaviors of Copper Alloys for Marine Propellers in 3.5%NaCl Solution

作　　者：李慧琳 宋亓宁 张根元[1] 许楠 包晔峰[1] 赵立娟[1] LI Huilin;SONG Qining;ZHANG Genyuan;XU Nan;BAO Yefeng;ZHAO Lijuan(College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,China)

机构地区：[1]河海大学机电工程学院,常州213022

出　　处：《腐蚀与防护》2022年第7期74-80,86,共8页Corrosion & Protection

基　　金：中央高校基本科研业务费专项资金资助(B200204036,B210202129);江苏省自然科学基金(BK20191161);国家自然科学青年基金(51601058,51879089)。

摘　　要：利用超声振动空蚀、旋转圆盘和喷射冲刷试验装置,对三种船舶螺旋桨用铜合金,即锰黄铜、锰铝青铜和镍铝青铜在模拟海洋环境中的空蚀和冲蚀行为进行对比分析。结果表明:三种材料抗空蚀和冲蚀性能由高到低依次为镍铝青铜、锰铝青铜、锰黄铜。锰黄铜在空蚀过程中发生β相解理断裂,出现大而深的空蚀坑,且锰黄铜的冲蚀质量最高。三种材料的冲蚀形貌类似,但锰黄铜表面犁沟槽更深,且出现沙粒冲击坑。喷射冲蚀试验后,三种铜合金表面损伤形貌呈W型,其中靠近喷嘴正下方的区域同时受到正应力和切应力作用,冲蚀最严重。The cavitation and erosion behaviors of three copper alloys for ship propellers,namely manganese brass,manganese aluminum bronze and nickel aluminum bronze,in a simulated marine environment were compared and analyzed using ultrasonically vibrating device,rotating disk and jet erosion test device.The results showed that the anti-cavitation and erosion properties of the three materials were nickel-aluminum bronze,manganese-aluminum bronze and manganese brass in descending order.β-phase cleavage fracture occurred in manganese brass during the cavitation erosion process,and large and deep cavitation pits appeared,and the erosion mass loss of manganese brass was the highest.The erosion morphology of the three materials were similar,but the surface of manganese brass showed deeper grooves and sand impact craters.After the jet erosion test,the surface damage morphology of the three copper alloys was W-shaped,and the area near the nozzle was subjected to both normal stress and shear stress,and the erosion was the most serious.

关 键 词：锰黄铜 锰铝青铜 镍铝青铜 空蚀 冲蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]