乔景振,田保红,张毅,周延军,国秀花,宋克兴

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

采用MCF-30型冲蚀磨损试验机,对不同钛含量的耐蚀铜合金在含砂的人工海水中进行冲蚀试验。冲蚀试验前后利用电子分析天平对冲蚀试样称重,利用扫描电镜和透射电镜分析冲蚀试样的冲蚀形貌、微观组织和冲蚀机理,在320HBS-3000型数显布氏硬度计上测量合金硬度。结果表明:添加Ti能显著提高合金在人工海水砂浆冲蚀条件下的冲蚀抗力,其冲蚀机理为砂粒的微切削与人工海水腐蚀综合作用机制;当钛含量为2.0%时,合金的耐冲蚀性能最好;在冲蚀速度为8.79 m·s-1,冲蚀角度为90°时,未加入Ti的合金表面腐蚀特征明显,出现了短的微切削沟槽、砂粒冲击坑及较粗大颗粒硬质相剥落坑;加入0.5%Ti的合金的冲蚀表面出现了较多的犁耕状沟槽和鱼鳞状剥落坑;加入2.0%Ti的合金的冲蚀表面腐蚀明显减轻,冲蚀表面沟槽较浅且比较窄。

关键词(KeyWords)： 耐蚀铜合金;冲蚀机理;腐蚀特征;微切削;沟槽

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划基金(2016YFB0301400)

作者(Author): 乔景振,田保红,张毅,周延军,国秀花,宋克兴

DOI: 10.13289/j.issn.1009-6264.2017-0554

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