Download or read book Tungsten Alloy Oxidation Behavior in Air and Steam written by and published by . This book was released on 1992 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents oxidation rates derived from posttest evaluations of a tungsten alloy initially tested at the INEL in air and steam between 600°C and 1200°C to obtain volatilization measurements which have been previously reported. Oxidation behavior of pure tungsten in air and environments containing water vapor is initially reviewed. The oxidation rates which we have found for the alloy in air and steam, expressed as recession rates (mm/s), are then compared with rates reported in the literature for pure tungsten. We have also used weight changes and mass balances involved in the oxidation and volatilization processes to predict oxidation reactions and estimate remnant oxide products and quantities of hydrogen formed. Relationships for the oxidation of the tungsten alloy in air and steam, and also, hydrogen generation in steam are given based upon data extracted both from our tests and from the literature. These are the relationships recommended for fusion safety analyses based upon the current available information. Finally, a comparison of hydrogen production rates show that the three primary plasma-facing component (PFC) materials ranked in increasing order are graphite, tungsten and beryllium. Each of these materials, however, have other safety or performance features which impact PFC selection.
Download or read book Oxidation of Tungsten written by Vincent David Barth and published by . This book was released on 1961 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents a detailed review of available information on the oxidation of W and its alloys. W is relatively inert below 700 C. As the temperature is increased above this level, however, oxidation becomes progressively more rapid, reaching catastrophic rates at temperatures around 1200 C and above. Various theories for the mechanism and rates of W oxidation at different temperatures are reviewed, and the effect of pressure and water vapor on the stability of W oxides is discussed in detail. The elevatedtemperature reactions of W with other materials, such as refractory oxides, and with gases other than oxygen also are covered. Information on the protection of W by alloying and coating is included. (Author).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-03 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidation of Tungsten and Tungsten Based Alloys written by E. A. Gulbransen and published by . This book was released on 1962 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Temperature Oxidation Protection of Tungsten written by and published by . This book was released on 1969 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Properties of Tungsten and Its Alloys written by Union Carbide Metals Company. Metals Research Laboratories and published by . This book was released on 1960 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidation of Tungsten at Ultra High Temperatures written by and published by . This book was released on 1962 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oxidation behavior of tungsten in air and oxygen has been studied as a function of pressure (0.1 to 5.0 mm Hg) and gas dynamics at temperatures from 1,300 to 3,3500C (2,370 to 6, 0600F). The development of a surface recession technique for rate meas urement in static and dynamic atmospheres at low pressures is described. Grain size and orientation are shown to influence the rate of oxidation. Transport of oxygen In the system is a rate-limiting factor in static or turbulent air. Oxygen partial pressure in the reaction chamber varies with the temperature, surface area, and system geometry. High-velocity jet impingement is required to provide a known and constant value of oxygen pressure. Gaseous transport is not rate limiting In pure oxygen at pressures below 3 mm Hg and temperatures to 2,2000C (3,9900F). Identical oxidation rates are obtained by tests In static, turbulent, or high-velocity oxygen and high-velocity air.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidation Behavior of a Complex Disilicide tantalum 10 Tungsten Alloy System at Temperatures of 1700 F 927 C to 2700 F 1482 C written by M. LEVY and published by . This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sodium Technology 1962 1971 written by U.S. Atomic Energy Commission and published by . This book was released on 1972 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Safety written by and published by . This book was released on 1964 with total page 1554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993 with total page 1258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor Materials written by and published by . This book was released on 1967 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AGARD Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1972 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion Abstracts written by and published by . This book was released on 1961 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
