金属离子对低铬铸铁腐蚀磨损的影响  

Effects of Metallic Ions on Abrasive Wear of Low Chromium Cast Iron

作　　者：张岩[1] 吕振林[1] 张敏[1] 周永欣[1] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《铸造技术》2005年第9期807-809,共3页Foundry Technology

摘　　要：采用三体腐蚀磨损试验方法,研究了低铬铸铁在含Cu2+、Fe3+和SO42-离子的介质中的腐蚀磨损特性,并对腐蚀磨损机理进行了分析。结果表明,随着介质中Fe3+和SO42-离子浓度的增加,低铬铸铁的腐蚀磨损耐磨性降低,而随着Cu2+离子浓度的增加,则耐磨性表现出先降低后增加的趋势。低铬铸铁在Cu2+和SO42-离子介质中的磨损机制以显微切削、犁沟和腐蚀剥落为主,在Fe3+离子介质中以腐蚀和显微切削、剥落为主,但在原始介质中,则以显微切削和犁沟为主,兼有少量剥落。因此,介质中的离子参与了低铬铸铁的磨损过程。The corrosion-wear behavior of low chromium cast iron was studied by using three-body corrosion wear tester in slurries contained with Cu^2＋ , Fe^3＋ and SO4^2- ions, respectively. The results showed that the corrosion-wear resistance of low chromium cast iron would be decreased with the increase of Fe^3＋ and SO4^2- concentration in slurries, but first decreased and then increased with the increase of Cu^2＋ concentration in slurries. The wear mechanism of low chromium cast iron was dominated by micro-cuttings, spallings and corrosion in the slurries with Cu^2＋ and SO4^2- ions, and by corrosion, micro-cuttings and spallings in the slurries with Fe^3＋ ion, but by micro-cuttings and grooves in the primal slurries. Therefore, the ions in slurries took part in the wear of low chromium cast iron.

关 键 词：低铬铸铁 腐蚀磨损 金属离子 

分 类 号：TG172[金属学及工艺—金属表面处理]