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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Domain size and thermal stability of amine-cured hybrid films as corrosion resistance treatments for aluminum alloy
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Domain size and thermal stability of amine-cured hybrid films as corrosion resistance treatments for aluminum alloy

机译：胺固化杂化膜的畴尺寸和热稳定性作为铝合金的耐腐蚀处理

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摘要

Amine-cured Ormosil coatings were prepared from tetraethylenepentamine (TEPA), 3-glycidoxypropyltrimethoxysilane (GPTMS) and tetraethoxysilane (TEOS) by sol-gel method. These Ormosil films were deposited by spin coated on aluminum alloy to improve the corrosion protection. The effect of the concentration of curing agent TEPA on the chain dynamic, domain size, thermal stability and corrosion performance of coated samples was investigated. The rotating frame spin-lattice relaxation times (T-1 rho(H)) and scale of the spin-diffusion path length (L) indicated that the configuration of the Ormosil films was highly crosslinked and dense and adhered to the aluminum alloy (AA) substrates. The thermal stability and the apparent activation energy (E-a), evaluated by van Krevelen's method. of the TEPA-cured GPTMS-TEOS Ormosils decreased with increasing TEPA content. Potentiodynamic and salt-spray analysis revealed that the Ormosil films provided exceptional barrier and corrosion protection in comparison with untreated AA substrates. (c) 2006 Elsevier B.V. All rights reserved.
机译：由四亚乙基五胺（TEPA），3-环氧丙氧基丙基三甲氧基硅烷（GPTMS）和四乙氧基硅烷（TEOS）通过溶胶-凝胶法制备胺固化的Ormosil涂层。这些Ormosil膜通过旋涂沉积在铝合金上，以提高防腐性能。研究了固化剂TEPA的浓度对涂层样品的链动力学，畴尺寸，热稳定性和腐蚀性能的影响。旋转框架的自旋晶格弛豫时间（T-1 rho（H））和自旋扩散路径长度（L）的大小表明Ormosil膜的构型高度交联且致密并粘附到铝合金（AA ）基材。热稳定性和表观活化能（E-a），通过van Krevelen方法评估。随着TEPA含量的增加，TEPA固化的GPTMS-TEOS蠕虫的数量减少。电位动力学和盐雾分析表明，与未经处理的AA基材相比，Ormosil膜提供了出色的阻隔性和腐蚀保护。 （c）2006 Elsevier B.V.保留所有权利。

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