烧碱浓度及冲刷对合金铸铁耐碱腐蚀性能的影响

Effect of Dentist and Scouring on Soda Corrosion Resistance of RE-Ni-Cu Alloy Cast Iron

采用失重法测定稀土镍铜合金铸铁在不同浓度烧碱液中以及静、动态下的腐蚀速度。结果表明,随着浓度的升高,稀土镍铜合金铸铁的腐蚀速度加快,而适量的稀土含量可降低合金铸铁对浓度的敏感性。碱液的冲刷会加剧稀土镍铜合金铸铁的腐蚀。

The corrosion rate of RE-Ni-Cu alloy cast irons was tested in soda solution at different dentist and static and dynamic condition. Experimental results show that the corrosion rate is accelerated as dentist raising. However, the proper content of RE can reduce the sensitivity on dentist. The soda solution scouring aggravates the corrosion of the alloy cast iron.