resistance, corrosion inhibition, organic amines, marine environment, diffusion, migration ... This design allows variability in the type of concrete membrane, i.e., ...
organic and inorganic corrosion inhibitors to the environment has provoked the search .... Polarization studies indicated that inhibitors are acted as mixed type.
of low carbon steel in 1 M hydrochloric acid solution has been studied by weight loss .... rc e n. t p ro te c tio n logc. 1. 2. 3. Figure 2. Protection efficiency of low carbon steel in 1 M .... M.K. Chatterjee, K.P. Benerjee, Mukherjee, Ind. J. Tec
corrosion inhibition of mild steel in 1M H2SO4 solution are given in Table 3 ..... H[sub 2]SO[sub 4] Containing Benzotriazole, Journal of The Elec- trochemical ...
Jul 26, 2014 - Structure Under Simulated Field Service Environment. L. Shi, J. Ye ... To guide the scientific applications of organic corrosion inhibitors, China is carrying .... carbon steel were used in this study. ..... reinforcement rust efficien
Dec 19, 2017 - Keywords: protein tyrosine phosphatases; PTP; vanadium; oxidovanadium; oxovanadium; vanadate; ... tyrosine kinases. Candidate inhibitor molecules that mimic substrates by competing for active site binding are thus usually charged or po
Passivating inhibitors cause a large anodic shift of the corrosion poten- tial, forcing the metallic surface into the ... such as phosphate, tungstate, and molybdate, that require the presence of oxygen to passivate steel. .... in metal-cleaning proc
try to summarize the clinical implications of VOC analysis ... of carbon-based chemicals that are volatile at ambient ..... Fibre selection based on an overall.
1H-NMR spectra were measured ... Solar Simulator 91160A-1000, Newport) passing through an AM 1.5 filter ... The 1H-NMR spectra of 23-SC and 25-SC were.
technologies such as gas chromatography-mass spectrometry and high performance ... aminoacetophenone are two examples of typical VOCs that have been used as .... production in the headspace of Pseudomonas bacterial culture could.
glycation are reflected in chronic complications of diabetes mellitus, renal failure, degenerative changes occurring in the course of ageing, and have also been ...
Corrosion is controlled by anodic (passivating) inhibitors including nitrate and chromate as well as by cathodic (e.g., zinc salt) inhibitors. Organic inhibitors (e.g., benzotriazole) are sometimes used as secondary inhibitors, especially when excess
Natalya V. Likhanova. Additional information is available at the end of the chapter http://dx.doi.org/10.5772/57252. 1. Introduction. In most industries whose facilities are constituted by metallic structures, the phenomenon of corrosion is invariabl
ability to form a thin, passivating film directly on the anodic portion of metal. Besides chromates and phosphates (or their combina- tions) silicates, nitrites and .... diethylamine, acridine, acriflavin, etc. These materials are used for combating
Feb 16, 2009 - Keywords: Polymers, metals, acids, alkaline, corrosion inhibition. 1. .... ionic species (HC solution), the corrosion inhibition abilities of.
ISSN: 0976-8610. CODEN (USA): AASRFC. 126. Pelagia Research Library. Nano-composite as corrosion inhibitors for steel alloys in different corrosive media.
their protonated forms in an electrical double layer were evaluated by density ... media.1â10 As corrosion inhibitors, various substances, both inorganic and orga ...
Jan 25, 2012 - and corrosion inhibitors (organic and inorganic additives). ... Pitting is a highly localized type of corrosion in the presence of aggressive chloride ...
VI NACE Mexican Section Corrosion Congress
ORGANIC COMPOUNDS AS CORROSION INHIBITORS FOR CARBON STEEL IN SOUR ENVIRONMENT LIKE NACE TM 0177 Esparza Zúñiga B.1, Veloz Rodríguez M. A., Esparza- Zúñiga E.1, Reyes Cruz V.E.1 , Martínez Palou R.2 ,Vázquez García R.A.1 1
Universidad Autónoma del Estado de Hidalgo, Área Académica de Materiales y Metalurgia. Carr. Pachuca Tulancingo Km 4.5, Ciudad Universitaria, Pachuca, Hgo. [email protected] 2 Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas # 152, México, D.F.
In this work, the results obtained from the electrochemical evaluation of four organic compounds with corrosion inhibiting properties, are presented. Such compounds were tested on carbon steel SAE1018 immersed in a solution like NACE TM 0177 without and with H2S. Evaluation of the compounds was carried out using the linear polarization and polarization curves. Also, the stirring effect was evaluated using a rotatory disk electrode and a 1000-rpm rotation speed. Some of the compounds evaluated showed low efficiency in absence of H2S but, this last increased when the H2S was added. On the other hand, stirring provoked that the corrosion products film formed with some compounds, was dissolved, leading the metallic surface exposed again to the corrosive environment. One of the compounds that had better results was the 2-Piridin-2-yl-1H-benzimidazole, which showed good efficiency in the system with H2S and stirring.