Multifunctional Corrosion Inhibition Behavior of Zn-Al Calcined Layered Double Hydroxides for Steel Rebar in NaCl Solution
- 2013年第19卷 
在空气气氛下合成了锌铝层状双金属氢氧化物(Zn-Al LDHs)和焙烧物(Zn-Al CLDHs)，扫描电镜结果表明，所制得的双金属氢氧化物具有明显的层状结构. 文中研究了Zn-Al CLDHs 对钢筋的腐蚀保护效果，Zn-Al CLDHs固体在NaCl 溶液中浸泡处理3 h 后，钢筋的腐蚀速率显著降低. 实验证明，Zn-Al CLDHs 在结构重组过程中可吸收溶液中的Cl-，同时释放出OH-，改善腐蚀环境，有效抑制钢筋的腐蚀.The Zn-Al layered double hydroxides (Zn-Al LDHs) and calcined products (Zn-Al CLDHs) were synthesized successfully under a routine air atmosphere. The results showed that both Zn-Al LDHs and Zn-Al CLDHs had obvious flake structures. The corrosion inhibition of Zn-Al CLDHs for steel rebar in NaCl solution was studied by electrochemical techniques. It was found that the corrosion rate of steel rebar decreased significantly after the steel rebar was treated by Zn-Al CLDHs in NaCl solution for 3 h. It was indicated that Zn-Al CLDHs could absorb Cl- and release OH- during their reconstruction process, which provided dual protection for the steel rebar.