... of the weld joint regions. It was observed that the loss of ductility and the iron sulphide film morphology, and the promoted barrier effect against hydrogen, are dependent on the weld joint area considered. weld joint hydrogen embrittlement sour corrosion SSRT iron sulphide surface analysis Besides...

... on top of the iron oxide layer. Surface analysis was used to examine chemical composition and the formation process of the passivation film. It was found that the dispersant polymer used to control scale inhibition plays a significant role in the calcium phosphate passivation mechanism for iron surfaces...

... by different means: mechanical (weight loss) and electrochemical, respectively. CRM data suggests a steady state in admiralty brass (ADM) corrosion rate is reached anywhere from 2 to 6 hours with an azole inhibitor present in typical cooling water chemistry. Surface analysis revealed coupons to achieve maximum...

... analysis of BZT, TTA, and BBZT under simulated cooling conditions provides new insights into the azoles' corrosion inhibition performance, mechanism, and mode of use for yellow metal corrosion control Benzotriazole Tolyltriazole Butyl Benzotriazole Azole Corrosion Copper Surface Analysis...

... with addition of 100 mg/l sand in Forties brine saturated with CO₂. The effects of the pre-formed films and the mechanisms relating to corrosion and erosion-corrosion processes have been identified and analysed using surface analysis techniques (SEM, AFM) and nano-indentation. It has been found...

... orders of magnitude less than fresh steel. The corrosion scale was composed of iron carbonates and was pseudo-crystalline at the open steel surface. Well-crystallized scale was observed with epoxy-steel interface gaps of 20-100 µm. Carbon dioxide cement corrosion interface surface analysis...

... of imidazolines quaternary amines phosphonates in production waters spectroscopy solid phase extraction chromatography surface analysis INTRODUCTION This review is a compilation from the open literature and covers the most useful laboratory and field methodologies pertaining to the measurement of corrosion...

... will be addressed. N08367 6% Mo superaustenitic stainless steel crevice corrosion surface analysis Introduction The composition of an alloy is a key determinant of its resistance to corrosion. For stainless materials in seawater, the resistance to chloride pitting and crevice corrosion is generally described...

... and the bottom of the pipe under stratified and annular flow conditions. Various corrosion monitoring techniques, including ER, LPR, and WL, and surface analysis techniques, including SEM/EDS, MM, and XRD are used during the experiments and for post-test analysis. The parametric study involves the systematic...

... cross section surface analysis pitting density super-saturation acetic acid potentiodynamic sweeps Abstract Wet gas corrosion rates of C1018 and X65 steel have been measured at the top and bottom of a high pressure, 10 cm diameter horizontal pipeline under stratified flow conditions with different...

... to the iron carbonate scale forming process. The general corrosion rates measured by ER are low, which are also confirmed by the coupon weight loss measurements of average corrosion rates. No flow induced localized corrosion (FILC) was found for the flow and corrosion conditions applied. Surface analysis...

... discophora SP-6 biofilm mineral deposit biomineralization manganese dioxide corrosion ennoblement 316L stainless steel surface analysis x-ray photoelectron spectroscopy (XPS) electron spectroscopy for chemical analyses (ESCA) INTRODUCTION Numerous experiments have indicated that microbial...

... and microorganisms. polymer coatings natural seawater microbial corrosion EIS ENA laboratory tests surface analysis INTRODUCTION Electrochemical Data Due to the large number of samples and exposure times and the fact that not all samples have been removed at present due to insufficient coating degradation...

...Recent studies have used surface analysis techniques to investigate adsorption mechanisms of both commercial formulations and generic inhibitor molecules on a variety of substrates [ 5 - 8 ]. Most of these investigations have been concerned with analysis of the interaction of neat inhibitor...

... combinations show synergistic effects. The inhibitor/surfactants interaction was investigated by different surface analysis techniques (XPS, LAMMA, TOF-SIMS). carbon dioxide corrosion low alloy steel microstructure inhibitors surfactants quaternary ammonium compounds amines imidazolines nonionics...

...Abstract Surface analysis and electrochemical techniques have been used to characterize the influence of corrosion inhibitors on pit morphology and repassivation. This information has been used to develop a new inhibitor capable of significantly reducing hot surface pitting attack. Data from...

... where the hydrogen evolution and corresponding aluminum dissolution reactions are limited, so that hydrotalcite coating formation and growth are limited. conversion coatings aluminum alloys surface analysis acid de-oxidation hydrotalcite INTRODUCTION Aging of the bath did not entail a change in pH...

... environmental concerns, alternative chemicals have been evaluated. By using surface analysis techniques it was possible to investigate the behaviour of a novel phosphonate and compare it to a known pitting inhibitor, molybdate. A mechanism is proposed that accounts for laboratory and field results...

... TT isomers 4-methylbenzotriazole 5-methylbenzotri azole surface analysis ESCA SIMS thermal desorption adsorption Although these methods require an ultra-high vacuum (UHV), they can be used in this particular case as water does not play an important role in the inhibitor layer composition...

... and Auger analyses. A correlation between the sample polarization and the results of different surface analyses is presented. Surface analysis microbially influenced corrosion cathodic protection acid producing bacteria sulfate reducing bacteria calcareous coating INTRODUCTION Severe corrosion...