نتایج جستجو برای: corrosion index ci

تعداد نتایج: 588406  

Journal: :The journal of physical chemistry. B 2005
Yurko Duda Roberto Govea-Rueda Mónica Galicia Hiram I Beltran Luis S Zamudio-Rivera

The development of a methodology to predict the performance of a corrosion inhibitor (CI) using specific types of modeled and experimental surfaces and their subsequent estimation is presented. For previously reported imidazoline CIs, the theoretical partition coefficients and molecular volumes were calculated, providing a guide for molecular engineering of new imidazolines. The new CIs, N-[2-(...

2017
Xue Shouqing Liu Xiaohui

The self-assembled monolayer (SAM) was prepared using octadecyl trichlorosilane (OTS) in distilled solution on the copper surface. The effect of inhibitor concentration on the rate of inhibition efficiency and corrosion rate in corrosion medium on copper by using polarization curves, electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM) was studied. The results showed...

Journal: :J. Cases on Inf. Techn. 2016
Francisco Javier Miranda González Antonio Chamorro Mera Sergio Rubio

Aluminium Industry Abstracts; Australian Business Deans Council (ABDC); Cabell’s Directories; Ceramic Abstracts; Compendex (Elsevier Engineering Index); Computer & Information Systems Abstracts; Corrosion Abstracts; CSA Civil Engineering Abstracts; CSA Illumina; CSA Mechanical & Transportation Engineering Abstracts; DBLP; DEST Register of Refereed Journals; Electronics & Communications Abstract...

2007
K. Amaya

Corrosion is all around us and can affect our lives in many ways, because metals are so widely used in our world. Corrosion-related failures in the industries often result in catastrophic failures. Corrosion is not only dangerous, but costly. The cost of corrosion is estimated to be huge and protecting or reducing corrosion is one of the most important problems in engineering. Many attempts hav...

2016
Y. Karzazi M. E. Belghiti S. Boudra

Quantum chemical calculations using the density functional theory (DFT) at the B3LYP/6-31G(d,p) level were performed ontwo quinoxaline derivatives named: 1-ethyl-3-methylquinoxalin-2(1H)-one (Et-N-Q=O) and 1benzyl-3-methylquinoxalin-2(1H)-one (Bz-N-Q=O) in order to correlate the structural and electronic properties, such as HOMO, LUMO energy values, frontier orbital energy gap, molecular dipole...

2017
Jichao Li Hugo F. Lopez

The heterogeneous structure of Al alloys renders them susceptible to localized corrosion due to the different electrochemical properties existing in the Al-rich solid solution matrix and secondary phase particles. The galvanic interactions between these two phases can result in pit formation either through dissolution of the particles or corrosion of the matrix adjacent to the particles. This d...

Journal: :journal of dentistry, tehran university of medical sciences 0
s. yaghobee m. paknejad a. khorsand

objective: an association between poor oral health and chronic lung disease has recently been reported. the purpose of this study was to explore this potential association between asthma and periodontal disease. materials and methods: this is a descriptive case controlled study. the samples were selected from patients referred to respiratory disease clinic in a hospital in tehran, iran. the stu...

2016
Jianbo Sun Chong Sun Xueqiang Lin Xiangkun Cheng Huifeng Liu

The novel Cr-containing low alloy steels have exhibited good corrosion resistance in CO₂ environment, mainly owing to the formation of Cr-enriched corrosion film. In order to evaluate whether it is applicable to the CO₂ and H₂S coexistence conditions, the corrosion behavior of low-chromium steels in CO₂-H₂S environment with high pressure and high temperature was investigated using weight loss m...

2010
T. Watanabe

For liquid breeder blanket system using molten salts, tritium barrier, anti-corrosion barrier, tritium recovery system and heat exchanger make important roles. Especially in the heat exchanger, the tritium permeation from primary coolant loop to secondary coolant loop must be inhibited by the tritium barrier for safety. To develop it, it is essential to optimize chemical stability of the barrie...

2008
B. O. Oni

The corrosion behavior of both tin-plated carbon steel and aluminum (Al 1100) in NaCl solutions were studied using electrochemical impedance spectroscopy (EIS). The study objectives were to compare their corrosion behavior in concentrated brine solution, establish the equivalent electrical circuit diagrams of their corrosion phenomena, and consequently develop steady-state corrosion models for ...

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