气相缓蚀剂的研究进展

气相缓蚀剂使用简便、效果显著,已得到广泛应用,发展气相缓蚀剂评价方法,深入研究气相缓蚀剂机理,对气相缓蚀剂发展有着重要的作用和意义。本文阐述了气相缓蚀剂的机理、影响因素,介绍了失重法、电化学分析法、形态及结构分析等评价方法,总结了气相缓蚀剂的发展历程和研究前沿。     

气相缓蚀剂的研究进展简

作为抑制金属制品大气腐蚀的重要手段之一,气相缓蚀剂近来备受关注并取得较大进展。本文介绍了气相缓蚀剂目前的国内外发展概况,阐述了气相缓蚀剂的分类、性能、评价方法和作用机理,并展望了气相缓蚀剂今后的发展方向。     

气相缓蚀剂问答

1.应用气相缓蚀剂包装产品,防锈期多长? 某工厂用气相缓蚀剂封存的产品七年之久,无锈蚀现象。某研究所在全国各地用气相缓蚀剂封存的产品,逐年检查至今已十年之久,封存质量也很好。由此可见,应用气相缓蚀剂包装产品,只要注意了包装工艺,是可达十年以上的。 2.气相缓蚀剂使用范围怎样? 气相缓蚀剂亚硝酸二环己     

气相缓蚀剂的研究与应用

介绍了国内外气相缓蚀剂的发展历程，阐述了气相缓蚀剂的发展方向，总结了当前气相缓蚀剂的研究与应用情况。     

气相缓蚀剂的研究现状与展望

从缓蚀剂的缓蚀基团和分子结构方面概述了气相缓蚀剂的研究现状，阐述了气相缓蚀剂的有关缓蚀机理。分析了缓蚀效果的影响因素．讨论了气相缓蚀剂的发展方向．     

复合气相缓蚀剂对铁质文物缓蚀机理的研究

采用乌洛脱品和胺类缓蚀剂A制成一种新的气相缓蚀剂,用模拟大气腐蚀状态的薄液膜电化学测试技术研究了复合气相缓蚀剂对铸铁试样电化学行为的影响.并通过X射线衍射(XRD)和X射线光电子能谱(XPS)分析了复合气相缓蚀剂作用于模拟带锈文物所形成的锈层结构,并探讨了其缓蚀机理.结果表明,该复合气相缓蚀剂是一种阳极型的气相缓蚀剂,对模拟带锈文物有很好的缓蚀效果,该缓蚀剂可以促进铁质文物中的不稳定锈层向稳定锈层转化,抑制基体腐蚀的进一步扩展,对铁质文物具有很好的保护作用.      

铸铁文物用气相缓蚀剂研究

采用气相甄别法、失重法和封闭空间挥发减量法研究了多种气相缓蚀剂(VCI)对铁器文物的缓蚀效果,以此为基础,研制出了缓蚀性能优异的复合气相缓蚀剂。用扫描电子显微镜(SEM)和X射线散射能谱(EDS)研究了该缓蚀剂的缓蚀机理。     

铸铁文物复合气相缓蚀剂的复配与研究

以碳酸环己胺(CHC)为主体,通过与其它缓蚀剂复配,筛选出可用于铸铁文物保护的高效复合气相缓蚀剂。用极化曲线,电化学阻抗谱和XPS等手段研究了该复合气相缓蚀剂的缓蚀作用机理。结果表明:CHC与乌洛托品复配,具有良好的协同缓蚀效果,当乌洛托品与CHC以1∶4的质量比复配时,缓蚀率可达96.61%。该复合气相缓蚀剂是以抑制阳极反应为主的混合型缓蚀剂,能够和铸铁发生化学吸附而形成缓蚀性能良好的保护膜。     

气相防锈技术的环境安全因素探讨及其应用展望

分析了气相缓蚀剂的挥发扩散和气相防锈技术的特点,探讨了气相防锈技术应用过程中存在的环境问题和使用安全问题,介绍了海上风电机机舱防腐蚀、基于"腔室处理"的工序间防锈技术等气相缓蚀剂的新型应用技术,并展望了气相防锈应用技术的发展趋势。     

国内外缓蚀剂研究开发与展望

本文归纳总结了近年来缓蚀剂研究开发与应用情况,探讨了缓蚀剂的应用开发和缓蚀理论研究方面的部分成果,对缓蚀剂科学技术今后的发展趋势进行了展望。主要内容包括:(1)缓蚀剂应用技术的进步,(2)缓蚀剂作用的理论研究,(3)高效绿色缓蚀剂的开发利用,(4)气相缓蚀剂的研究与应用。     

气相防锈材料的开发与应用

阐述了以气相缓蚀剂为基础的气相防锈材料的开发现状,讨论气相防锈塑料、气相防锈干燥剂、气相防锈涂料、迁移型钢筋阻锈剂等几种气相防锈新材料的特点和应用前景,展望了气相防锈材料应用开发的方向。     

金属气相防锈技术的应用进展

综述了金属气相防锈技术的发展过程、应用类型和应用状况,对其技术发展前景进行了展望.     

On the Inhibition Effect of Volatile Nitrogen-Containing Bases on the Hydrogen Sulfide Corrosion of Steel

Highly basic nitrogen-containing compounds are not necessarily effective volatile inhibitors of hydrogen sulfide corrosion of steel, as distinct from the case of atmospheric corrosion. Apparently, this is due to different adsorptivities of organic compounds on oxide and sulfide films. New volatile inhibitors obtained from Schiff bases inhibit hydrogen sulfide corrosion of steel both in the liquid and vapor phases. It was found that addition of water-soluble compounds to Schiff bases can enhance their inhibition effects. The best results in the vapor phase were obtained with the formulations IFKhAN-61M and IFKhAN-61-54.     

Depositing nanolayers of volatile organic compounds on metals for higher resistance to atmospheric corrosion

Atmospheric corrosion stability of metals can be achieved by coating their surfaces with superthin nanoscale layers. The scientific principles of inhibiting metal corrosion have been under development for many years, but a new direction of progress has emerged recently. The main achievement of research in this new direction is the possibility of covering metals in nanoscale films that, despite their extreme thinness, ensure high corrosion resistance of the metals under various atmospheric conditions. To this end, methods are suggested for producing such coatings from volatile organic compounds that can adsorb on metal surfaces from the gaseous phase. Increasing the irreversibility of adsorption of volatile corrosion inhibitors is necessary to strengthen the protective effect of the nanolayers they form on the surface. Nanolayer-coating protection has a number of fundamental advantages, including retention of article dimensions, a lack of a need for special utilization and degreasing methods, and affordability.     

Metal Protection with Volatile Corrosion Inhibitors under Heat-Transfer Conditions

The influence of heat transfer on metal protection with volatile corrosion inhibitors (VCIs), the mechanisms of corrosion initiation, and methods for its prevention were analyzed. It was found that effective VCIs can be prepared from substances that form azeotropic mixtures with water. The theoretical conclusions are illustrated by corrosion tests carried out under intense moisture condensation.     

Comparative study of bis-piperidiniummethyl-urea and mono-piperidiniummethyl-urea as volatile corrosion inhibitors for mild steel

Bis-piperidiniummethyl-urea (BPMU) and mono-piperidiniummethyl-urea (MPMU) were developed as novel volatile corrosion inhibitors (VCIs). Their vapor corrosion inhibition property was evaluated by volatile inhibiting sieve test (VIS) and vapor inhibiting ability test (VIA). Volatile weight-loss test in a closed space was used to compare their volatility. Electrochemical impedance spectroscopy of a volatile corrosion inhibitor monitor (VCIM) was applied to study the effect of BPMU and MPMU on the corrosion inhibition of mild steel in thin electrolyte layer. The results show that BPMU has the better protection effect compared with MPMU. Adsorption of BPMU and MPMU on steel surface was investigated by X-ray photoelectron spectroscopy (XPS). It was shown that one BPMU molecule has two N atoms to coordinate with one Fe atom, and that one MPMU molecule has one N atom to coordinate with one Fe atom. The quantum chemical parameters were obtained by PM3 semi-empirical method. BPMU has the smaller HOMO-LUMO energy gap and the smaller net positive charge intensities of 4N and 8N atoms in its molecule.     

Applying Corrosion Inhibitors to Metal Surfaces in Electrostatic Field

A basically new method, not yet described in the world literature, for applying volatile corrosion inhibitors to metal surfaces in electrostatic field is suggested. The method is applicable in the corrosion protection of machinery for oil extraction and processing (gas–air zones in oil- and petroleum-storage tanks, separators, etc.), including its protection against atmospheric corrosion.     

镁及镁合金缓蚀剂研究现状与展望

缓蚀剂技术是一种简单有效抑制金属在腐蚀介质中遭到破坏的腐蚀防护手段,在钢铁、铜等传统金属上已有大量研究及应用。由于镁具有接受电子和给予电子能力都比较低的原子结构特点和高活泼的化学性质,对传统金属材料有效的缓蚀剂对镁合金作用并不理想,所以对镁合金的缓蚀剂研究较少、起步较晚。近年来,经过国内外研究机构的不懈努力,对镁合金缓蚀剂的开发和缓蚀机理的研究取得了一定突破,初步建立了镁合金缓蚀剂的评价体系。针对镁合金缓蚀剂的不同应用介质,结合镁合金缓蚀剂的化合物性质,阐述了镁合金缓蚀剂的构效关系、影响缓蚀效率的主要因素、复配缓蚀剂配方优化等最新研究动态,并介绍了其缓蚀机理或协同缓蚀机理。最后,结合镁合金缓蚀剂的研究现状以及新的研究方法及其检测技术的发展,对镁合金缓蚀剂未来的研究方向、发展趋势和应用领域的拓展提出了展望。