Materials Literature
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Resumen: Se busca adaptar la tecnologa existente para el algodn comercial al hilado de algodn nativo de color (ANC), que, por su fibra corta, no puede ser procesado industrialmente con la tecnologa existente. As, se ensay mezclando ANC puro con algodn Tangis para determinar sus caractersticas fsicas, como elongacin, r…
Abstract Radioactive liquid waste has been stored in underground carbon steel tanks for nearly 60 years at the Savannah River Site. The site is currently in the process of removing the waste from these tanks in order to place it into vitrified, stable state for longer term storage. The last stage in the removal sequen…
Abstract The present work investigates the electrochemical behavior of passive film formed on Ni-Cr-Mo alloy 625 in potentials ranging from -100 to 700 mVSCE using various techniques, including potentiodynamic polarization, potentiostatic polarization, Electrochemical Impedance Spectroscopy (EIS), and Mott-Schottky (M…
Abstract Austenitic stainless steels such as type 304 and 316 are used as core internals components in light water reactors. Under certain operation conditions the austenitic stainless steels may be susceptible to environmentally assisted cracking, more specifically, irradiation assisted stress corrosion cracking. Irr…
Abstract Production chemicals are injected downhole, at the wellhead or between the wellhead and the oil/water separation facilities. Typically, the injected fluid is a complex mixture of chemicals designed to impart several functions including (i) inhibition of asphaltene, wax and/or organic scale deposition, (ii) in…
Abstract In chemical processes, there is a possibility that localized corrosion (pitting, crevice corrosion, etc.) may occur in processes containing halides. This can make difficult the selection of suitable materials for plant construction. If high corrosion resistance material is selected, equipment costs increase a…
Abstract The corrosion resistance of welded stainless steel depends on a number of factors, including selection of proper weld procedures, selection of welding filler metal and post weld surface treatment. Guidance on stainless steel fabrication gives great attention to the first two items, while giving little practic…
Abstract This paper presents the strategy of failure analysis of an 18-inch diameter spiral-welded gas transmission pipeline. The pipeline (X52) was shielded metal arc welding (SMAW) construction, coated with glass fiber reinforced coal-tar enamel. The details of investigation synopsis are explained with logical discu…
Abstract In the present study, n ‐butyl acrylate macromonomer (BAMM) ( M n = 1900 g mol −1 ; PDI = 1.96) has been synthesized via a high‐temperature polymerization process. Subsequently, the olefinic termini of the BAMM have been transformed into a diol via a dihydroxylation process using KMnO 4 as an oxidizing agent.…
This contribution describes two different approaches aimed at the synthesis of monolayer molecular sheets with internal order, or, in other words, 2D polymers. First, an interfacial strategy is presented in which terpyridene-based hexafunctional monomers spread at the air/water interface are connected to one another w…
Abstract Carbon steel pipelines are being used across the world as a cost effective option for wet gas transportation. When these pipelines operate in a stratified flow regime, top-of-line (TOL) corrosion can occur as a result of water condensation at the top of the pipeline in the presence of corrosive species such a…
Abstract The use of high density brine is required for High Pressure High Temperature (HPHT) gas condensate wells to ensure safe well operations during drilling and completion phases. Cesium formate brine is one of the latest high-density brine used for this application, being both environmentally friendly and non-cor…
Abstract Scaling, which is the formation of insoluble inorganic solids, is a major problem in water treatment plants and in the oil industry. Millions of dollars are spent each year to prevent the occurrence of scale. Calcium carbonate (CaCO3) and barium sulfate (BaSO4) are common types of scale encountered in these s…
Abstract In multiphase gas pipelines constructed from carbon steel, there is a threat to the system integrity due to top-of-line corrosion. In wet gas pipelines, produced water has a tendency to condense at the top-of-the pipeline as the temperature and pressure decreases, causing corrosion at the 12 o'clock position.…
Abstract There is an increasing demand for high strength (more than 110 ksi grade) tubing that is applicable at high temperatures between 175 and 200°C for XHPHT (Extreme High Pressure and High Temperature) wells in mildly sour environments. Super 13Cr stainless steels categorized as "13-5-2" in ISO13680 are typically…
Abstract A novel multifunctional poly(aryl ether) with both pendant oligoaniline and fluorene groups (PAE‐ p ‐OF) was synthesized by nucleophilic polycondensation and characterized by 1 H NMR, Fourier‐transform infrared spectra, and gel permeation chromatography. The polymer showed excellent solubility in common organ…
Abstract The susceptibility of High Strength Low Alloy steels to Sulfide Stress Cracking (SSC) in H2S containing environments is evaluated by NACE TM0177-2005 test methods. Those SSC tests are commonly conducted at room temperature and atmospheric pressure. However, because of the severity of some O&G wells, there…
Abstract Frequently, water injection pipelines do not last their design life due to corrosion problems. More often than not, the reason has been ‘channelling’ or ‘grooving’ corrosion at the bottom of the carbon steel pipeline. Once this mechanism does manifest itself within a pipeline, it may not be stopped, only slow…
Insulin fibrils were used as a biotemplate to attach gold nanoparticles to silicon wafer surfaces for application as surface-enhanced Raman scattering (SERS) substrates. Gold nanoparticles (NP) attach to the insulin fibrils through electrostatic interactions forming chains of discreet NPs. A combination of 4-aminothio…
Glass with a low transition temperature (Tg) has the advantage of extending the service life of molding dies. However, low Tg glasses normally demonstrate poor chemical durability and scratch resistance. The molding of low Tg chalcogenide glasses is very challenging due to their fragile and unstable characteristics. T…