Download or read book Anodic Polarization of Titanium and Its Alloys in Hydrochloric Acid written by Milton Levy and published by . This book was released on 1968 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercially pure titanium and the alloys studied exhibited active to passive transitions in HCl. Increasing the acid concentration increased the critical current for passivity and shifted the critical potential for passivity in the noble direction. Increasing the temperature served only to increase the critical current for passivity. Activation energies for the anodic polarization process were the right order of magnitude for a reaction controlled by reactivity at the metal surface. For the alpha-beta alloy 6Al-6V-2Sn the critical current for passivity increased as the ratio of amounts of beta-to-alpha phase decreased with increasing strength level. The addition of Fe(3+) and Cu(2+) (0.03 M) to the HCl facilitated passivation of the metal and its alloys. The maximum dissolution current densities for the metal and alloys in HCl were double those in H2SO4. Pitting of several of the alloys occurred in HCl but not in H2SO4. (Author).
Download or read book Anodic Behavior of Titanium and Its Alloys in Sulfuric Acid written by Milton Levy and published by . This book was released on 1967 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electrochemical behavior of titanium and its alloys was studied in sulfuric acid media. Electronic potentiostatic anodic polarization techniques were employed. The anodic behavior of titanium was related to the parameters of temperature; acid concentration; chloride, iron, and copper additions to the electrolyte; yield strength level; microstructure of the alloy; and the use of passivating inhibitors. (Author).
Download or read book Anodic Polarization Behavior of Titanium and Titanium Alloys in Sulfuric Acid Solutions written by James M. PETERS and published by . This book was released on 1966 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was made to investigate the anodic polarization behavior of commercially-available titanium alloys in sulfuric acid solutions. Six materials were investigated at 22 plus or minus 1C using the potentiostatic technique. The electrolyte was 1, 5, and 10 normal concentrations of hydrogen-saturated, sulfuric acid. Anodic polarization curves (potential versus log current density) were obtained for all specimens in each of the three acid solutions. In addition, corrosion potential runs were determined for a 0.1N H2SO4 solution. All specimens display an active-to-passive transition. The alloy containing 13V-11Cr-3A1 was the only specimen investigated which exhibited transpassive behavior in the normal range of interest (E sub corr to +3.0 volts). None of the specimens exhibited Tafel behavior for anodic dissolution in the active region or in the transpassive region. The passive current density, ip, was less than 20 microamps/sq cm for all specimens, indicating the presence of a stable passive film on the specimen surface. The magnitude of the passive current density, ip, did not vary significantly with acid concentration. The passivation potential, Ep, became more noble (positive) with increasing acid concentration. The magnitude of the critical current density, icr, increased with increasing acid concentration. The corrosion potential was essentially constant for the 1, 5, and 10 normal environments. It was more noble by 0.2 to 0.4 volts in 0.1N acid concentrations for all specimens except the Ti-8A1-1Mo-1V alloy, for which it is more noble by almost 0.7 volts. (Author).
Download or read book Anodic Polarization Behavior of Titanium and Titanium Alloys in Sulfuric Acid Solutions written by James M. Peters (CIVILIAN.) and published by . This book was released on 1966 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion of Titanium written by J. D. Jackson and published by . This book was released on 1966 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Foreign Metals on the Corrosion of Titanium in Boiling 2M Hydrochloric Acid written by W. Roger Buck (III.) and published by . This book was released on 1958 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate of corrosion of titanium was determined in boiling 2M HCl when contacted with aluminum, cadmium, tin, zirconium, lead, bismuth, mercury, silver, copper, antimony, vanadium, 70:30, 50:50, and 30:70 copper-nickel alloys, iron, palladium, cobalt, nickel, gold, rhodium, platinum, and iridium. Less extensive corrosion measurements of the same type were also made in 0.6 and 2M H2SO4. The potentials of the couple and of the two members of the couple were determined in boiling 2M HCl for 20 of the systems studied. A plot of the corrosion rate versus the couple potential yeilded a polarization curve which was similar to the anodic polarization curve for titanium with an impressed voltage. The curve exhibited a maximum in corrosion rate at a couple potentionof -0.49 volt versus the saturated calomel electrode. The potential of titanium in boiling 2M HCl was also determined as a function of concentration of the following metallic cations in the acid: copper, silver, antimony, nickel, gold, palladium, rhodium, platinum, and iridium. The influence of the cations on the corrosion rate was explained in relation to the polarization curve.
Download or read book Titanium and Titanium Alloys written by James Case Williams and published by . This book was released on 1982 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Translation written by and published by . This book was released on 1959 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion of Metals and Alloys written by Institut fizicheskoĭ khimii (Akademii︠a︡ nauk SSSR) and published by . This book was released on 1966 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion and Protection of Metal Structural Materials written by Nikon Danilovich Tomashov and published by . This book was released on 1964 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expediency of utilizing the concept of a controlling factor for the characteristics of a protective-action mechanism and a systematization of various types of anticorrosion protection is considered in the first article of the collection. The remaining papers of the collection are devoted to specific problems encountered in experimental study of the corrosion processes and the protection of metallic systems. Such important divisions as the study of gas corrosion during heat-treatment of alloys, the corrosion and protection of metals during etching in acids, the acid resistance of metals at elevated temperatures, the corrosion of new metallic structural materials -- titanium, its alloys and niobium alloys containing tantalum -- and new studies to determine the intergranular corrosion of stainless steels are reflected in this collection. Recent investigations linked with study of the corrosion fatigue of steel and with the corrosion and protection in certain operations of the chemical industry are also incorporated in the collection. (Author).
Download or read book Physical Metallurgy of Titanium written by Ivan Ivanovich Kornilov and published by . This book was released on 1965 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by United States. Bureau of Mines and published by . This book was released on with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by and published by . This book was released on 1910 with total page 650 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 Doklady written by Akademii︠a︡ nauk SSSR. and published by . This book was released on 1964 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
