Download or read book Corrosion by Fluoride Solutions written by Woodfin E. Shuler and published by . This book was released on 1959 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various alloys and stainless steels were tested for their resistance to corrosion in hydrofluoric acid and nitric acid, and in mixtures of the tow acids. Stainless 309Cb corroded in 4M HF - 10M HNO3 at rates of about 80 mils per year at 80©C. Neutralized solutions containing 1 to 12M fluoride corroded mild steel at rates of about 10 mils per year at 95©C.

Download or read book Investigation of Effect of Fluoride on Corrosion of 2S 0 Aluminum and 347 Stainless Steel in Fuming Nitric Acid a T 170 written by Charles E. Feiler and published by . This book was released on 1954 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluorine Corrosion written by W. R. Myers and published by . This book was released on 1947 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inhibition of Chloride Induced Crevice Corrosion in Alloy 22 by Fluoride Ions written by R. B. Rebak and published by . This book was released on 2005 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloy 22 (N06022) is highly resistant to localized corrosion. Alloy 22 may be susceptible to crevice corrosion in pure chloride (Cl{sup -}) solutions under aggressive environmental conditions. The effect of the fluoride (F{sup -}) over the crevice corrosion induced by chloride ions is still not well established. The objective of the present work was to explore the crevice corrosion resistance of this alloy to different mixtures of fluorides and chlorides. Cyclic potentiodynamic polarization (CPP) tests were conducted in deaerated aqueous solutions of pure halide ions and also in different mixtures of chloride and fluoride at 90 C and pH 6. The range of chloride concentration [Cl{sup -}] was 0.001 M {le} [Cl{sup -}] {le} 1 M and the range of molar fluoride to chloride ratio [F{sup -}]/[Cl{sup -}] was 0.1 {le} [F{sup -}]/[Cl{sup -}] {le} 10. Results showed that Alloy 22 was susceptible to crevice corrosion in all the pure chloride solutions but not in the pure fluoride solutions. Fluoride ions showed an inhibitor behavior only in mixtures with a molar ratio [F{sup -}]/[Cl{sup -}]> 2. For mixtures with a molar ratio [F{sup -}]/[Cl{sup -}] of 7 and 10 the inhibition of crevice corrosion was complete.

Download or read book Corrosion Handbook written by Dieter Behrens and published by . This book was released on 1987 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Corrosion and Electrochemical Behaviour of Titanium in Aci Solutions Containing Fluoride Ions written by D. L. Bartlett and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion of Stainless Steel in Thorex Process Solutions written by Patricia M. Kranzlein and published by . This book was released on 1959 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion Behaviors of Fluoride Treated Cast Magnesium Alloy in Hank s Solution written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Corrosion Behaviour of Titanium and Its Inhibition in Acid Solutions Containing Fluoride Ions written by D. L. Bartlett and published by . This book was released on 1983 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Corrosion Data written by Bruce D. Craig and published by ASM International. This book was released on 1994-12-31 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes it easy for you to find what effect environment has on the corrosion of metals and alloys. However, this volume offers information on additional environments including concrete, soil, groundwater, distilled water, sodium acetate and more. ThereAs also updated and expanded coverage of previously discussed environments as well as information on environments which deal with the dairy, food, brewing, aerospace, petrochemical and building industries. The environments are listed alphabetically. Each listing includes a general description of the conditions, a comment on the corrosion characteristics of various alloys in such a situation, a bibliography of recent articles specific to the environment, tables consolidating and comparing corrosion rates at various temperatures and concentrations for various alloys, and graphical information. Also included are summaries on the general corrosion characteristics of major metals and alloys.

Download or read book Corrosion of Stainless Steel in HNO3 HF Solutions written by Patricia M. Kranzlein and published by . This book was released on 1960 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion of Metallic Materials in Aqueous Solutions of Fluorides at High Temperatures written by E. I. Antonovskaya and published by . This book was released on 1961 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crevice Corrosion Susceptibility of Alloy 22 in Fluoride and Chloride Containing Solutions written by S. D. Day and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloy 22 (N06022) is highly resistant to crevice corrosion in pure chloride (Cl{sup -}) solutions. Little research has been conducted to explore the resistance of this alloy to other halides such as fluoride (F{sup -}) and bromide (Br{sup -}). Even less information is available exploring the behavior of localized corrosion for Alloy 22 in mixtures of the halide ions. Standard electrochemical tests such as polarization resistance and cyclic potentiodynamic polarization (CPP), were conducted to explore the resistance to corrosion of Alloy 22 in deaerated aqueous solutions of 1 M NaCl, 1 M NaF and 0.5 M NaCl + 0.5 M NaF solutions at 60 C and 90 C. Results show that the general corrosion rate was the lowest in the mixed halide solution and the highest in the pure chloride solution. Alloy 22 was not susceptible to localized corrosion in the pure fluoride solution. In 1 M NaCl solution, Alloy 22 was susceptible to crevice corrosion at 90 C. In the mixed halide solution Alloy 22 was susceptible to crevice corrosion both at 60 C and 90 C.

Download or read book Copper Corrosion and Fluoride written by B. D. Bensley and published by . This book was released on 1979 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion Behavior of Titanium Grade 7 in Fluoride Containing NaCl Brines written by and published by . This book was released on 2004 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium Grade 7 (UNS R52400) is a titanium-based alloy with 0.12-0.25% Pd. The addition of the small amount of palladium is to ennoble the corrosion potential of Ti, thus improving the corrosion resistance of titanium in reducing environments. In most aqueous environments, Ti and Ti alloys demonstrate excellent corrosion resistance due to the protective oxide film that forms spontaneously and remains stable on the surface. However, Ti and Ti alloys are susceptible to corrosion in fluoride-containing environments due to the formation of complexes such as TiF{sub 6}{sup 2-} and TiF{sub 6}{sup 3-}, which are stable and soluble in electrolyte solutions. Without the presence of fluoride, only slight effects from [Cl{sup -}], pH and temperature have been reported [1]. It has been reported that the kinetics of passive corrosion of titanium in neutral solutions and controlled by the migration of the defects in the oxide across the surface film [2]. Thus, the increase in thickness and improvement in film properties, by thermal oxidation, would lead to a significant decrease in the susceptibility to film breakdown and in the passive corrosion rate. This report summarizes recent experiment results in studies of the environmental influence on the corrosion behavior of Titanium Grade 7 (Ti-7) in NaCl brines containing fluoride. The environmental factors to be studied include temperature, pH, chloride and fluoride concentration. This report also includes the effects of oxide film, formed during an anneal treatment, on the corrosion behavior of Ti-7. Polarization measurement techniques including potentiodynamic and potentiostatic scans were use3d to characterize corrosion kinetics and susceptibility. Due to the unique alloying in Titanium Grade 7, the long-term corrosion behavior is heavily influenced by the surface enrichment of Pd. Use of electrochemical impedance spectroscopy in conjunction with a potentiostatic scan will reveal the transformation in the corrosion behavior as a function of Pd enrichment on the metal surface. Surface characterization was done using various analytical techniques including X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), and scanning electron microscopy (SEM). The effect of fluoride ion on the corrosion behavior of Ti-7 is strongly dependent on the solution pH. In neutral (pH 8) and alkaline (pH 11) solutions, fluoride did not affect the corrosion rate significantly even though it altered the anodic polarization curve drastically. With pH decreased to 4, the corrosion rate of Ti-7 was increased significantly by the presence of fluoride.

Download or read book The Corrosion Behaviour of Titianium and Its Inhibition in Ac Solutions Containing Fluoride Ions written by D. L. Bartlett and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion by Solutions Containing HNO3 HF and Reducing Agents written by M. LaVern Holzworth and published by . This book was released on 1958 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The corrosion resistance of various materials of construction was measured in mixtures of nitric and hydrofluoric acids that contained hydroxylamine nitrate, sulfamic acid, and ascorbic acid. The corrosion of Types 304L and 309b stainless steel was investigated as a function of the concentrations of the components of the medium. Methods of decreasing corrosion by addition of ferric, cupric, and silver cations as inhibitors, or aluminum as a complexing agent were found.