共 23 条
Improvement of Adhesion Properties and Corrosion Resistance of Sol-Gel Coating on Zinc
被引:12
作者:
Savignac, Pauline
[1
]
Menu, Marie-Joelle
[2
]
Gressier, Marie
[2
]
Denat, Bastien
[1
]
El Khadir, Yacine
[1
]
Manov, Stephan
[1
]
Ansart, Florence
[2
]
机构:
[1] VM Bldg Solut, Les Mercuriales, Tour Ponant, 40 Rue Jean Jaures, F-93170 Bagnolet, France
[2] Univ Toulouse, CNRS INPT UPS, CIRIMAT, UMR 5085, 118 Route Narbonne, F-31062 Toulouse 09, France
来源:
MOLECULES
|
2018年
/
23卷
/
05期
关键词:
sol-gel;
hybrid materials;
corrosion;
adhesion;
coating;
zinc;
SILICA SOL;
CERIUM;
PROTECTION;
METALS;
D O I:
10.3390/molecules23051079
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Corrosion is a major problem for durability of many metals and alloys. Among the efficient classical surface treatments, chromate-based treatments must be banished from industrial use due to their toxicity. At the same time, sol-gel routes have demonstrated high potential to develop an efficient barrier effect against aggressive environments. By this process, the anti-corrosion property can be also associated to others in the case of the development of multi-functional hybrid coatings. In this paper, the main goal is precisely to improve both the corrosion resistance and the adhesion properties of phosphated zinc substrates by the deposition of a hybrid (organic-inorganic) sol-gel layer. To reach this double objective, a choice between two formulations 3-glycidoxypropyltrimethoxysilane (GPTMS)/aluminum-tri-sec-butoxide (ASB) and 3-(trimethoxysilyl)propylmethacrylate (MAP)/tetraethylorthosilicate (TEOS) was firstly made based on the results obtained by microstructural characterizations using SEM, optical analysis, and mechanical characterization such as shock and/or scratch tests (coupled to climatic chamber and salt spray exposure). Several investigations were performed in this study, and the best formulation and performances of the system were obtained by adding a new precursor (1-[3-(trimethoxysilyl)propyl]ureido-UPS) under controlled conditions, as detailed in this paper.
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页数:13
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