• 首页
  • 期刊介绍
  • 编委会
  • 征稿启事
  • 期刊订阅
  • 相关下载
  • 联系我们
亚硝酸盐对含氯盐砂浆内钢筋钝化膜组成的影响
Effect of Nitrite on Passivation Film Composition of Reinforcing Bar in the Mortar Containing Chloride
投稿时间:2017-09-21  修订日期:2017-11-27
DOI:103969/j.issn.1007 9629201804002
中文关键词:  亚硝酸盐  砂浆  钝化膜  X射线光电能谱  微结构
英文关键词:nitrite  mortar  passivation film  X ray photoelectron spectroscopy(XPS)  microstructure
基金项目:国家自然科学基金资助项目(51478227,51778302)
              
作者单位
柳俊哲
LIU Junzhe
宁波大学建筑工程与环境学院,浙江宁波315211
Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
耿俊迪
GENG Jundi
宁波大学建筑工程与环境学院,浙江宁波315211
Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
巴明芳
BA Mingfang
宁波大学建筑工程与环境学院,浙江宁波315211
Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
贺智敏
HE Zhimin
宁波大学建筑工程与环境学院,浙江宁波315211
Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
李玉顺
LI Yushun
宁波大学建筑工程与环境学院,浙江宁波315211
Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
摘要点击次数: 160
全文下载次数: 
中文摘要:
      采用X射线光电能谱仪(XPS)研究了NaNO2对含氯盐砂浆内钢筋钝化膜微结构的影响,阐明了亚硝酸盐阻锈作用下砂浆内钢筋钝化膜的微结构变化规律及其特征.研究结果表明:NaNO2在碱性环境下与Fe元素反应生成中间产物Na2FeO2和(NaFeO2)2,进一步促进Fe3O4的生成,提高了阻锈效果;NaNO2的掺入促进了反应式向正向移动,提高了钝化膜中Fe3O4的含量;当普通碳钢钝化膜内5nm处Fe3+/Fe2+的百分比大于表层的Fe3+/Fe2+百分比时,钝化膜内部的致密性优于表面.NaNO2不参与钝化膜的组成,但参与生成钝化膜的反应过程,该反应过程为缓慢的动态平衡过程,可通过改变反应物的含量控制钝化膜厚度.
英文摘要:
      The effects of NaNO2 on the passivation film were studied through X ray photoelectron spectroscopy(XPS) in the chloride environment of the mortar. The microstructural variation and characteristics of the passivation film of mortar in this condition were clarified. The results show that the intermediate products Na2FeO2 and (NaFeO2)2 are formed at the reaction of NaNO2 with Fe in alkaline environment, which promote the formation of Fe3O4 and enhance the effect of rust. The increase of NaNO2 content can promote the forward reaction process so as to increase the content of Fe3O4 in the passivation film. The percentage of Fe3+/Fe2+ on the surface of the passivation film is lower than that of Fe3+/Fe2+ at 5nm. That is to say, the internal density of the passivation film of steel is denser than that of the surface.
查看全文  查看/发表评论  下载PDF阅读器
关闭