Download or read book Some Effects of Air Oxidation on the Properties of Graphite written by R.H. Knibbs and published by . This book was released on 1970 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalytic Effects in the Air Oxidation of Graphite written by H. Hering and published by . This book was released on 1961 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiation Effects on the Oxidation Rate and on Other Chemical Properties of Graphite written by G. R. Hennig and published by . This book was released on 1958 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Applied Materials Research written by Edwin Garnet Stanford and published by . This book was released on 1962 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparison of the Effects of Oxidation and the Effects of Neutron Irradiation on Graphite written by Gerhart Hennig and published by . This book was released on 1952 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes of the electrical properties of oxidized graphite have been compared with the changes produced by neutron irradiation. It has been possible to separate the neutron-induced damage into the damage produced by electron removal and that produced by scattering centers. A model for radiation damage has been proposed.

Download or read book Handbook of Carbon Graphite Diamonds and Fullerenes written by Hugh O. Pierson and published by William Andrew. This book was released on 2012-12-02 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a review of the science and technology of the element carbon and its allotropes: graphite, diamond and the fullerenes. This field has expanded greatly in the last three decades stimulated by many major discoveries such as carbon fibers, low-pressure diamond, and the fullerenes. The need for such a book has been felt for some time. These carbon materials are very different in structure and properties. Some are very old (charcoal), others brand new (the fullerenes). They have different applications and markets and are produced by different segments of the industry.Few studies are available that attempt to review the entire field of carbon as a whole discipline. Moreover these studies were written several decades ago and a generally outdated since the development of the technology is moving very rapidly and scope of applications is constantly expanding and reaching into new fields such as aerospace, automotive, semiconductors, optics, and electronics. In this book the author provides a valuable, up-to-date account of both the newer and traditional forms of carbon, both naturally occurring and man-made. This volume will be a valuable resource for both specialists in, and occasional users of carbon materials.

Download or read book Modern Aspects of Graphite Technology written by Lionel Cyril Francis Blackman and published by Academic Press. This book was released on 1970 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wear and Friction of Oxidation resistant Mechanical Carbon graphites at 650 C in Air written by Gordon P. Allen and published by . This book was released on 1975 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon and Graphite Handbook written by Charles Letnam Mantell and published by . This book was released on 1968 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Oxidation on Oxidation Resistant Graphite written by and published by . This book was released on 2015 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Reactor Technology (ART) Graphite Research and Development Program is investigating doped nuclear graphite grades that exhibit oxidation resistance through the formation of protective oxides on the surface of the graphite material. In the unlikely event of an oxygen ingress accident, graphite components within the VHTR core region are anticipated to oxidize so long as the oxygen continues to enter the hot core region and the core temperatures remain above 400°C. For the most serious air-ingress accident which persists over several hours or days the continued oxidation can result in significant structural damage to the core. Reducing the oxidation rate of the graphite core material during any air-ingress accident would mitigate the structural effects and keep the core intact. Previous air oxidation testing of nuclear-grade graphite doped with varying levels of boron-carbide (B4C) at a nominal 739°C was conducted for a limited number of doped specimens demonstrating a dramatic reduction in oxidation rate for the boronated graphite grade. This report summarizes the conclusions from this small scoping study by determining the effects of oxidation on the mechanical strength resulting from oxidation of boronated and unboronated graphite to a 10% mass loss level. While the B4C additive did reduce mechanical strength loss during oxidation, adding B4C dopants to a level of 3.5% or more reduced the as-fabricated compressive strength nearly 50%. This effectively minimized any benefits realized from the protective film formed on the boronated grades. Future work to infuse different graphite grades with silicon- and boron-doped material as a post-machining conditioning step for nuclear components is discussed as a potential solution for these challenges in this report.

Download or read book The Effects of Diffusional Control of Oxidation of Graphite on the Highest Safe Temperatures in Air written by P. J. Robinson and published by . This book was released on 1964 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling the Effect of Thermal Oxidation on the Pore Structure of Artificial Graphite written by Ryan Michael Paul and published by . This book was released on 2011 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A persistent concern for applications of artificial graphite materials is loss of graphite due to thermal oxidation reactions with air or steam. Oxidation is insidious since it enlarges the inherent pores, which rapidly degrades microstructure and properties. Artificial graphites vary in their initial pore microstructure, yet the currently used 2D Random Pore Model (2D-RPM) cannot accurately predict oxidation rates from initial microstructure. Therefore, empirical methods have remained widely used to quantify oxidation rates.

Download or read book The Effects of Diffusional Control of Oxidation of Graphite on the Highest Safet Temperatures in Air written by United Kingdom Atomic Energy Authority. Reactor Group and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Oxidizing Environment on the Strength and Oxidation Kinetics of HTGR Graphites Part I Reactivity and Strength Loss of H451 PGX and IG 11 Graphites written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of oxidizing atmosphere and temperature on the reactivities and strengths of PGX, H451, and IG-11 were examined. Preliminary measurements of the oxidation kinetics of these graphites in H2O-, CO2- and O2-containing atmospheres indicated that the reactivities of H451 graphite toward O2 and H2O are quite similar to those of IG-11 graphite. The apparent activation energy for oxidation of these in O2 were estimated to be approx. 175 kJ/mol while that in H2O is probably approx. 200 kJ/mol. The apparent activation energy of IG-11 graphite oxidized in CO2 is 255 +- 18 kJ/mol. PGX graphite was found to be quite variable in its reactivity toward H2O. A linear dependence with (Fe) was determined, but other intrinsic properties were found to affect its absolute reactivity by as much as a factor of X50.

Download or read book Summaries of Physical Research in Research in Metallurgy Solid State Physics and Ceramics written by Ralph R. Nash and published by . This book was released on 1959 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Papers Read at the Conference written by and published by . This book was released on 1970 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Catalytic Effect of Vanadium Iron and Lead on the Air Oxidation of Pile Grade A Graphite written by Michael Paul and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: