Formation mechanisms of environmentally acceptable chemical conversion coatings for zinc: a review

被引:43
作者
Gao, Zhiqiang [1 ,2 ]
Zhang, Dawei [1 ]
Liu, Zhiyong [1 ]
Li, Xiaogang [1 ]
Jiang, Sheming [2 ]
Zhang, Qifu [2 ]
机构
[1] Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing, Peoples R China
[2] Cent Iron & Steel Res Inst, Natl Engn Lab Adv Coating Technol Met, Beijing, Peoples R China
关键词
Corrosion; Conversion coating; Zinc; Molybdate; Phosphate; Vanadate; ALUMINUM-ALLOY; 2024-T3; SELF-HEALING MECHANISM; RARE-EARTH SALTS; SOL-GEL COATINGS; CORROSION PROTECTION; GALVANIZED STEEL; CERIUM(III) NITRATE; SODIUM-SILICATE; DEPOSITION MECHANISM; PASSIVITY BREAKDOWN;
D O I
10.1007/s11998-018-0076-1
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Eco-friendly conversion treatments have attracted a great interest for corrosion protection of Zn-based materials. Considerable work has been undertaken on the development of advanced conversion coatings. However, the complete range of formation mechanisms of these coatings is not fully understood. Comprehensive understanding of the mechanisms of coating formation, from coating methodologies to fundamentals, is lacking. This review covers recent research that has led to advances in formation mechanisms of environmentally acceptable conversion coatings for zinc, including the thermodynamic stability of chemical systems, the illumination of intermediate reactions, the characterization of the element compositions of coatings, and the deduction for the formation mechanisms of coatings. Representative surface treatment techniques, including phosphate coating, molybdate coating, rare earth coating, vanadate coating, IV(B) metal coating, and silane coating, are discussed in detail. Finally, focused on the strategies used to develop new technologies of conversion treatments, discussions on future trends and perspectives of clever design solutions and advanced analytical methods for formation processes will be given finally.
引用
收藏
页码:1 / 13
页数:13
相关论文
共 108 条
[1]   Protective sol-gel coatings for zinc corrosion: Precursor type effect [J].
Ali, Shimaa M. ;
Al Lehaibi, Hamedh A. .
SURFACE & COATINGS TECHNOLOGY, 2017, 311 :172-181
[2]   Effect of inhibition synergism of zinc chloride and 2-mercaptobenzoxzole on protective performance of an ecofriendly silane coating on mild steel [J].
Alinejad, Shima ;
Naderi, Reza ;
Mahdavian, Mohammad .
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2017, 48 :88-98
[4]   On the role of NO2- ions in passivity breakdown of Zn in deaerated neutral sodium nitrite solutions and the effect of some inorganic inhibitors potentiodynamic polarization, cyclic voltammetry, SEM and EDX studies [J].
Amin, Mohammed A. ;
Hassan, Hamdy H. ;
El Rehim, Sayed S. Abd .
ELECTROCHIMICA ACTA, 2008, 53 (05) :2600-2609
[5]   Corrosion mechanisms of phosphated zinc layers on steel as substrates for automotive coatings [J].
Amirudin, A ;
Thierry, D .
PROGRESS IN ORGANIC COATINGS, 1996, 28 (01) :59-75
[6]   Synergistic inhibition of zinc corrosion in 0.5 M NaCl by combination of cerium(III) chloride and sodium silicate [J].
Aramaki, K .
CORROSION SCIENCE, 2002, 44 (04) :871-886
[7]   Self-healing protective films prepared on zinc by treatments with cerium(III) nitrate and sodium phosphate [J].
Aramaki, K .
CORROSION SCIENCE, 2002, 44 (11) :2621-2634
[8]   Self-healing mechanism of an organosiloxane polymer film containing sodium silicate and cerium(III) nitrate for corrosion of scratched zinc surface in 0.5 M NaCl [J].
Aramaki, K .
CORROSION SCIENCE, 2002, 44 (07) :1621-1632
[9]   Cerium(III) chloride and sodium octylthiopropionate as an effective inhibitor mixture for zinc corrosion in 0.5 M NaCl [J].
Aramaki, K .
CORROSION SCIENCE, 2002, 44 (06) :1361-1374
[10]   Preparation of chromate-free, self-healing polymer films containing sodium silicate on zinc pretreated in a cerium(III) nitrate solution for preventing zinc corrosion at scratches in 0.5 M NaCl [J].
Aramaki, K .
CORROSION SCIENCE, 2002, 44 (06) :1375-1389