Innovations in Corrosion and Materials Science (Discontinued) - Volume 8, Issue 2, 2018

FAC, Flow Accelerated Corrosion, arises in the inside wall surface of carbon steel pipes which carry boiler supply water. Metal loss rates due to this sort of corrosion is relatively high; 1mm/y usually, over 4mm/y some cases. Damage areas are comparatively wide: the axis-directional extent of the hole created in pipe wall is several times of the pipe diameter. The EPRI, Electric Power Research Institute USA, presented the corros Read More

Background: The corrosion rate of biomedical magnesium alloys must be controlled to avoid excessive degradation in the physiological medium. Conversion coatings produced in fluoride-based electrolytes can be employed as a suitable corrosion protection route for these materials. The use of concentrated HF solutions is the most common procedure in the current literature. The aim of the present work was to employ a less Read More

Background: The electrochemical corrosion properties of bulk nanocrystalline aluminum (BNC-Al) produced by severe rolling technique and its traditional polycrystalline aluminum (TPC-Al) counterpart in 0.022, 0.044, 0.066, 0.11, 0.22, 0.44 mol/L HCOOH solutions were studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) at ambient temperature. Method: The corrosion curre Read More

Background: Two techniques of laser optical interferometry have been reviewed for detection of crevice corrosion of low carbon steel samples in aqueous solutions. The first technique used an optical corrosion-meter to detect localized corrosion such as crevice corrosion, of the low carbon steel samples in seawater. The concept of the optical corrosion-meter was based on incorporating holographic interferometry and the c Read More

Background and Method: The growth mechanism of sulphide films formed on copper in anaerobic 0.1 M NaCl + 5 x 10-4 M Na2S solution has been investigated under natural corrosion conditions for exposure periods up to 1691 hours using scanning electron microscopy, focused ion beam cross-sectioning, and a Au marker procedure. Results and Conclusions: The film formed by a chemical deposition process via an outwar Read More

Background: In this paper, a comparative study of the correctness of the results of registration of corrosion kinetics with the methods of current-voltage curves (V / a) and Coulometric Registration of Corrosion Products (CDCP method) was carried out. Methods: It is shown that the action of the electric field under polarization changes the character of the corrosion process and, in particular, stimulates the formation of the oxi Read More

Background: Surface wrinkle responding to external stimuli has potential applications in information storage, sensors, construction of special surfaces and so on. Ferrocene and azobenzenecontaining polymer Poly[2,2-Bis(4-glycidyloxyphenyl)propane-co-4-(4-ferrocenylimidephenylazo) benzenamine] (PAZO-Fc) and azobenzene-containing polymer Poly[2,2-Bis(4-glycidyloxyphenyl) propane-co-4- (4-nitrophenylazo)benzen Read More