Biocorrosion, also known as microbiologically influenced corrosion (MIC), is caused by various corrosive biofilms. So far, laboratory experimental MIC pitting tests in the published literature have overwhelmingly focused on sulfate reducing bacteria (SRB) that use sulfate as the terminal electron acceptor because SRB and sulfate are often found at anaerobic pitting sites. Many laboratory pure-c...

This paper discusses chemical and galvanic corrosion of tungsten nitride carbide (WNC) barrier metal. Chemical corrosion occurs due to the oxidation of W in the WNC film by H2O2, which is used as oxidizer in CMP slurries, followed by the dissolution of the oxide complex. Galvanic corrosion takes place due to the high potential difference between Cu and WNC established in the presence of H2O2 ba...

α, ω-alkane-bis(n-myristoyloxyethyl-n, n-dimethyl)-diammonium bromide were synthesized and confirmed by ft-ir, ft-raman and 1h-nmr spectroscopy. surface tensions were measured by sigma 70 and conductivity meter ec-470c. critical micelle concentration values were 2.70×10-4∼3.05×10-4 mol/l. the krafft points were measured at 39.1 ~ 43.2℃. their inhibition effects on the corrosion of low carbon st...

In this paper , the effect of curing time and temperature as well as various primers on durability of high density polyethylene on plain carbon steel have been investigated. The aim is to increase adhesion, improve durability and also to produce a defect-free in order to improve the corrosion resistance of steel substrate. For this purpose, after surface preparation and applying a primer (zin...

in this investigation, attempts were directed to study the inhibitive effects of nitrite and phosphate base inhibitors for the carbon steel alloy samples, which are used in an acid gas treatment process (the sulfiran® solution), in fe-edta solution. electrochemical techniques, i.e. polarization curves and electrochemical impedance spectroscopy (eis), were used to evaluate the inhibition efficie...

2-phosphonobutane-1,2,4-tricarboxylic acid is(pbtc) a member of phosphonate family, and used as corrosion and scale inhibitor in cooling water systems. phosphonocarboxylates as a member of organophosphorus compounds have c-p and p-o bonds in their structures. pbtc is mainly used as carbonate scale inhibitor (caco3), sulphate scale inhibitor (caso4), corrosion inhibitor of low alloyed steel, eff...

corrosion makes huge economic and ecologic damage all over the world. biologic corrosion of sewer pipes is considered as a serious limitation in economic perspectives. to prevent biologic corrosive damage, lining techniques can be applied by materials and aggregate resistant to attack bacterially in sewer pipes. the role of bacteria is that they convert sulfur compounds into sulfuric acid which...

Hydrochloric acid (HCl) is an important mineral acid with many uses, including the pickling of steel, acid treatment of oil wells and chemical cleaning and processing. This acid is extremely corrosive and its aggressiveness can change drastically depending on its concentration, the temperature and contamination by oxidizing impurities. One of the most commonly encountered oxidizing impurities i...

In this paper, the corrosion behavior of the filled epoxy paint with the rice husk ash RHA on steel substrates in two different corrosive environments natural sea water and 2M sulfuric acid has been studied. Electrochemical impedance spectroscopy EIS was used to evaluate protective properties of different organic coating systems due to the different filler composition. RHA was prepared by heati...