نتایج جستجو برای: anti corrosion pigments

تعداد نتایج: 406280  

2018
Jolanta Gąsiorek Anna Szczurek Bartosz Babiarczuk Jerzy Kaleta Walis Jones Justyna Krzak

Corrosion is constantly a major problem of the world economy in the field of metal products, metal processing and other areas that utilise metals. Previously used compounds utilizing hexavalent chromium were amongst the most effective materials for corrosion protection but regulations have been recently introduced that forbid their use. Consequently, there is a huge drive by engineers, technolo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

2017
Guanqiao Su Xiuhua Gao

A cyclic wet/dry accelerated corrosion test was used to compare the corrosion behavior of medium-Mn steel and Q345 steel. In terms of scanning electron microscope (SEM), using X-ray diffraction (XRD), electron probe microanalysis (EPMA), X-ray photoelectron spectroscopy (XPS), and analysis of the corrosion process, the results showed that the medium-Mn steel did not exhibit higher corrosion res...

2010
Elsebeth L. Kendix Silvia Prati Rocco Mazzeo Edith Joseph Giorgia Sciutto Concezio Fagnano

In the field of FTIR spectroscopy of heritage materials, the Far Infrared (FIR) region has been less investigated than the Mid Infrared (MIR) although it has some advantages, particularly in characterisation of inorganic compounds such as painting materials and corrosion products, which are not active in the MIR. Furthermore, FIR spectroscopy is a complementary technique to Raman spectroscopy i...

Journal: :international journal of nano dimension 0
z. sharifi department of material engineering, shiraz university, shiraz, iran m. pakshir department of material engineering, shiraz university, shiraz, iran f. ghofrani department of material engineering, shiraz university, shiraz, iran s. babamohammadi department of chemistry, shiraz university, shiraz, iran.

a new anti-corrosion compound, melamine formaldehyde (mf), was formulated by the addition of proper amount of formaldehyde to melamine under specific conditions. this compound was mixed with a novel nano powder, which was extracted from corn cob ash containing sio2 particles, in order to improve its corrosion inhibition efficiency. this inhibitor provides a high level of protection for steel su...

Journal: :Coatings 2023

The degradation process and the electrochemical behavior of two anti-corrosion anti-fouling coating systems (FW-1 FW-2) in a simulated diurnal cycling immersion environment (3.5% NaCl, 35 °C 12 h + 25 h) were investigated by impedance spectroscopy (EIS) technology. Combined with gloss, color difference, adhesion strength scanning electron microscopy (SEM) tests, micro morphologies variations pe...

2012
Matthew O’Reilly David Darwin JoAnn Browning

To improve the corrosion protection provided to prestressing strands, anti-bleed grouts are used to fill voids in post-tensioning ducts that result from bleeding and shrinkage of older portland cement grouts. Environmental differences caused by exposing the strands to dissimilar grouts, however, have the potential to cause rapid corrosion. Portland cement grout, gypsum grout, and four commercia...

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