通过量子化学计算、质量损失测试、电化学测试和扫描电镜等研究烟酸、吖啶和小檗碱等杂环化合物对热镀锌钢材在盐酸介质中的缓蚀作用.量子化学计算结果表明,3种化合物均具有多个吸附活性中心,且其前线轨道与镀层表面锌原子的前线轨道能够相互作用,因而使得杂环化合物分子可通过在镀层钢材表面形成吸附膜而阻止热镀锌钢材在盐酸介质中的溶解.质量损失和电化学测试结果表明:3种化合物在盐酸介质中对热镀锌钢材均具有良好的缓蚀作用,最高缓蚀效率可达99%以上;其中小檗碱的缓蚀效果最好,在浓度为1.0×10.4 mol/L时缓蚀效率就已达到80%以上;3种化合物均通过单分子层化学吸附方式吸附在镀层表面,从而起到保护作用,是热镀锌钢材酸洗过程的环境友好型缓蚀剂.
参考文献
| [1] | Marder AR. .The metallurgy of zinc-coated steel [Review][J].Progress in materials science,2000(3):191-271. |
| [2] | King G A;O'Brien D J.The influence of marine environments on metals and fabricated coated metal products,freely exposed and partially sheltered[A].Philadelphia:American Society for Testing and Material,1995:167-192. |
| [3] | 李焰,魏绪钧,冯法伦.热浸锌铝合金镀层表面纳米晶腐蚀产物共沉积机理[J].中国有色金属学报,2001(02):248-252. |
| [4] | Zhang SG;Lei W;Xia MZ;Wang FY .QSAR study on N-containing corrosion inhibitors: Quantum chemical approach assisted by topological index[J].Journal of Molecular Structure. Theochem: Applications of Theoretical Chemistry to Organic, Inorganic and Biological Problems,2005(1/3):173-182. |
| [5] | M. Lashgari;M. R. Arshadi;Gh. A. Parsafar .A Simple and Fast Method for Comparison of Corrosion Inhibition Powers Between Pairs of Pyridine Derivative Molecules[J].Corrosion: The Journal of Science and Engineering,2005(8):778-783. |
| [6] | H. Luo;Y. C. Guan;K. N. Han .Corrosion inhibition of a mild steel by aniline and alkylamines in acidic solutions[J].Corrosion: The Journal of Science and Engineering,1998(9):721-731. |
| [7] | G. Bereket;E. Hur;C. Ogretir .Quantum chemical studies on some imidazole derivatives as corrosion inhibitors for iron in acidic medium[J].Journal of Molecular Structure. Theochem: Applications of Theoretical Chemistry to Organic, Inorganic and Biological Problems,2002(1/3):79-88. |
| [8] | Lebrini M;Lagrenée M;Vezin H;Gengembre L Bentiss F .Electrochemical and quantum chemical studies of new thiadiazole derivatives adsorption on mild steel in normal hydrochloric acid medium[J].Corrosion Science,2005,47(02):485-505. |
| [9] | Li Y;Zhao P;Liang Q;Hou BR .Berberine as a natural source inhibitor for mild steel in 1 M H2SO4[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(5):1245-1253. |
| [10] | 宋晓岚,邱冠周,王海波,吴雪兰,曲选辉.2-氨基-5-巯基-1,3,4-噻二唑缓蚀剂结构的密度泛函计算[J].中国有色金属学报,2004(02):291-297. |
| [11] | Jian Fang;Jie Li .Quantum chemistry study on the relationship between molecular structure and corrosion inhibition efficiency of amides[J].Journal of Molecular Structure. Theochem: Applications of Theoretical Chemistry to Organic, Inorganic and Biological Problems,2002(1/3):179-185. |
| [12] | (U)retir C;Bereket G .Quantum chemical studies of some pyridine derivatives as corrosion inhibitors[J].Journal of Molecular Structure(Theochem),1999,488(03):223-231. |
| [13] | Sastri V S;Perumareddi J R .Molecular orbital theoretical studies of some organic corrosion inhibitors[J].Corrosion,1997,53(08):617-620. |
| [14] | Quraishi MA.;Sharma HK. .4-amino-3-butyl-5-mercapto-1,2,4-triazole: a new corrosion inhibitor for mild steel in sulphuric acid[J].Materials Chemistry and Physics,2003(1):18-21. |
| [15] | Emregul KC.;Atakol O. .Corrosion inhibition of mild steel with Schiff base compounds in 1 M HCl[J].Materials Chemistry and Physics,2003(1):188-193. |
| [16] | Ajmal M;Mideen A S;Quaraishi M A .2-hydrazino-6-methyl-benzothiazole as an effective inhibitor for the corrosion of mild steel in acidic solutions[J].Corrosion Science,1994,36(01):79-84. |
| [17] | Emregül K C;Kurtaran R;Atakol O .An investigation of chloride-substituted Schiff bases as corrosion inhibitors for steel[J].Corrosion Science,2003,45(12):2803-2817. |
| [18] | A. Asan;S. Soylu;T. Kiyak;F. Yildirim;S.G. Oeztas;N. Ancin;M. Kabasakaloglu .Investigation on some Schiff bases as corrosion inhibitors for mild steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2006(12):3933-3944. |
| [19] | Bouklah M;Benchat N;Hammouti B;Aouniti A.Kertit S .Thermodynamic characterization of steel corrosion and inhibitor adsorption of pyridazine compounds in 0.5 mol/L H2SO4[J].Materials Letters,2006,60(15):1901-1905. |
| [20] | El Rehim SSA.;Hassan HH.;Amin MA. .The corrosion inhibition study of sodium dodecyl benzene sulphonate to aluminium and its alloys in 1.0 M HCl solution[J].Materials Chemistry and Physics,2003(2):337-348. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%