EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book A High Temperature Cyclic Oxidation Data Base for Selected Materials Tested at NASA Glenn Research Center

Download or read book A High Temperature Cyclic Oxidation Data Base for Selected Materials Tested at NASA Glenn Research Center written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cyclic oxidation test results for some 1000 high temperature commercial and experimental alloys have been collected in an EXCEL database. This database represents over thirty years of research at NASA Glenn Research Center in Cleveland, Ohio. The data is in the form of a series of runs of specific weight change versus time values for a set of samples tested at a given temperature, cycle time, and exposure time. Included on each run is a set of embedded plots of the critical data. The nature of the data is discussed along with analysis of the cyclic oxidation process. In addition examples are given as to how a set of results can be analyzed. The data is assembled on a read-only compact disk which is available on request from Materials Durability Branch, NASA Glenn Research Center, Cleveland, Ohio.Barrett, Charles A.Glenn Research CenterDATA BASES; NASA PROGRAMS; HEAT RESISTANT ALLOYS; MATERIALS TESTS; OXIDATION; HIGH TEMPERATURE; DURABILITY; CORROSION; REACTION KINETICS; MATHEMATICAL MODELS; SPALLING

Book High Temperature Materials and Mechanisms

Download or read book High Temperature Materials and Mechanisms written by Yoseph Bar-Cohen and published by CRC Press. This book was released on 2014-03-03 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of high-temperature materials in current and future applications, including silicone materials for handling hot foods and metal alloys for developing high-speed aircraft and spacecraft systems, has generated a growing interest in high-temperature technologies. High Temperature Materials and Mechanisms explores a broad range of issues relate

Book Cyclic Oxidation Testing and Modelling A NASA Lewis Perspective

Download or read book Cyclic Oxidation Testing and Modelling A NASA Lewis Perspective written by and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Oxidation Behavior of Grcop 84 Cu 8cr 4nb at Intermediate and High Temperatures

Download or read book Oxidation Behavior of Grcop 84 Cu 8cr 4nb at Intermediate and High Temperatures written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-27 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oxidation behavior of GRCop-84 (Cu-8 at %Cr-4 at %Nb) has been investigated in air and in oxygen, for durations of 0.5 to 50 hours and temperatures ranging from 500 to 900 C. For comparison, data was also obtained for the oxidation of Cu and NARloy-Z (Cu-3 wt% Ag-0.5 wt% Zr) under the same conditions. Arrhenius plots of those data showed that all three materials had similar oxidation rates at high temperatures (> 750 C). However, at intermediate temperatures (500 to 750 C) GRCop exhibited significantly higher oxidation resistance than Cu and NARloy-Z. The oxidation kinetics of GRCop-84 exhibited a sharp and discontinuous jump between the two regimes. Also, in the high temperature regime GRCop-84 oxidation rate was found to change from a high initial value to a significantly smaller terminal value at each temperature, with progress of oxidation; the two different oxidation rates were found to correlate with a porous intial oxide and a dense final oxide, respectively. Thomas-Ogbuji, Linus U. and Humphrey, Donald L. and Greenbauer-Seng, Leslie (Technical Monitor) Glenn Research Center NASA/CR-2000-210369, E-12420, NAS 1.26:210369

Book John Stringer Symposium on High Temperature Corrosion

Download or read book John Stringer Symposium on High Temperature Corrosion written by Peter F. Tortorelli and published by ASM International(OH). This book was released on 2003 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from a November 2001 symposium detail advances in the field of high-temperature corrosion. Specific topics covered include short circuit oxygen transport paths in Rutile scales, superalloy substrate influences on the oxidation behavior of aluminide bond coatings, management of nitrogen in chr

Book Long Term Cyclic Oxidation Behavior of Uncoated and Coated Re 108 and In 939 at 980 and 870 C

Download or read book Long Term Cyclic Oxidation Behavior of Uncoated and Coated Re 108 and In 939 at 980 and 870 C written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very long-term cyclic oxidation behavior of Re-108 and ln-939 with and without a protective coating was evaluated at 980 and 870 C, respectively. Re-108 and ln-939 without a protective coating began to show rapid weight loss at 3000 h due to scale spallation, indicating the need for an oxidation protective coating for longer than thousands of hours of oxidative life. NiAl-base coatings of a vapor phase aluminide (VPA), a pack aluminide (CODEP), and a slurry paint aluminide (SERMALOY J) were applied on Re-108 and ln-939. VPA and CODEP on Re-108 and all three coatings on ln-939 showed excellent cyclic oxidation resistance out to 10000 hr. Coated alloys were annealed in an inert atmosphere to determine the loss of Al from the coating into the alloy substrate through diffusion. The Al loss from the coating through diffusion was twice as great as the Al loss through oxidation after 10000 h of cyclic exposure. Oxidation life of VPA-coated Re-108 was estimated by calculating the amount of Al initially available for protective oxidation and the amount of Al lost through oxidation and diffusion. Lee, K. N. and Barrett, C. A. and Smith, J. Glenn Research Center NASA/TM-1999-209072, E-11630, NAS 1.15:209072

Book Aerospace Materials and Applications

Download or read book Aerospace Materials and Applications written by Biliyar N. Bhat and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present volume is focused on documenting the novel processing, fabrication, characterization, and testing approaches that are unique to aerospace materials/structures/systems"--Preface.

Book High Temperature Materials and Mechanisms

Download or read book High Temperature Materials and Mechanisms written by Yoseph Bar-Cohen and published by CRC Press. This book was released on 2014-03-03 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of high-temperature materials in current and future applications, including silicone materials for handling hot foods and metal alloys for developing high-speed aircraft and spacecraft systems, has generated a growing interest in high-temperature technologies. High Temperature Materials and Mechanisms explores a broad range of issues related to high-temperature materials and mechanisms that operate in harsh conditions. While some applications involve the use of materials at high temperatures, others require materials processed at high temperatures for use at room temperature. High-temperature materials must also be resistant to related causes of damage, such as oxidation and corrosion, which are accelerated with increased temperatures. This book examines high-temperature materials and mechanisms from many angles. It covers the topics of processes, materials characterization methods, and the nondestructive evaluation and health monitoring of high-temperature materials and structures. It describes the application of high temperature materials to actuators and sensors, sensor design challenges, as well as various high temperature materials and mechanisms applications and challenges. Utilizing the knowledge of experts in the field, the book considers the multidisciplinary nature of high temperature materials and mechanisms, and covers technology related to several areas including energy, space, aerospace, electronics, and metallurgy. Supplies extensive references at the end of each chapter to enhance further study Addresses related science and engineering disciplines Includes information on drills, actuators, sensors and more A comprehensive resource of information consolidated in one book, this text greatly benefits students in materials science, aerospace and mechanical engineering, and physics. It is also an ideal resource for professionals in the industry.

Book Reliability and Maintainability RAM Training

Download or read book Reliability and Maintainability RAM Training written by Vincent R. Lalli and published by . This book was released on 2000 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theme of this manual is failure physics - the study of how products, hardware, software, and systems fail and what can be done about it. The intent is to impart useful information, to extend the limits of production capability, and to assist in achieving low-cost reliable products. In a broader sense the manual should do more. It should underscore the urgent need for mature attitudes toward reliability. Five of the chapters were originally presented as a classroom course to over 1000 Martin Marietta engineers and technicians. Another four chapters and three appendixes have been added. We begin with a view of reliability from the years 1940 to 2000. Chapter 2 starts the training material with a review of mathematics and a description of what elements contribute to product failures. The remaining chapters elucidate basic reliability theory and the disciplines that allow us to control and eliminate failures.

Book Spinoff 2012

Download or read book Spinoff 2012 written by Daniel Coleman and published by Government Printing Office. This book was released on 2013-02-06 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: NP 2012-11-912-HQ. Provides an in-depth look at how NASA's initiatives in aeronautics and space exploration have resulted in beneficial commercial technologies in the fields of health and medicine, transportation, public safety, consumer goods, environmental protection, computer technology and industrial productivity

Book Case Studies in Material Selection

Download or read book Case Studies in Material Selection written by David Cebon and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of 40 or so case studies in materials selection. They illustrate the use of a methodology used to select candidate materials for a wide range of applications - mechanical, thermal, electrical, and combinations of these. Each case study addresses the question - out of all the materials available to the engineer, how can a short list of promising candidates be identified?

Book Environmental Barrier Coatings

Download or read book Environmental Barrier Coatings written by Kang N. Lee and published by MDPI. This book was released on 2020-12-29 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global increase in air travel will require commercial vehicles to be more efficient than ever before. Advanced engine hot section materials are a key technology required to keep fuel consumption and emission to a minimum in next-generation gas turbines. Ceramic matrix composites (CMCs) are the most promising material to revolutionize gas turbine hot section materials technology because of their excellent high‐temperature properties. Rapid surface recession due to volatilization by water vapor is the Achilles heel of CMCs. Environmental barrier coatings (EBCs) is an enabling technology for CMCs, since it protects CMCs from water vapor. The first CMC component entered into service in 2016 in a commercial engine, and more CMC components are scheduled to follow within the next few years. One of the most difficult challenges to CMC components is EBC durability, because failure of EBC leads to a rapid reduction in CMC component life. Key contributors to EBC failure include recession, oxidation, degradation by calcium‐aluminum‐magnesium silicates (CMAS) deposits, thermal and thermo‐mechanical strains, particle erosion, and foreign object damage (FOD). Novel EBC chemistries, creative EBC designs, and robust processes are required to meet EBC durability challenges. Engine-relevant testing, characterization, and lifing methods need to be developed to improve EBC reliability. The aim of this Special Issue is to present recent advances in EBC technology to address these issues. In particular, topics of interest include but are not limited to the following: • Novel EBC chemistries and designs; • Processing including plasma spray, suspension plasma spray, solution precursor plasma spray, slurry process, PS-PVD, EB-PVD, and CVD; • Testing, characterization, and modeling; • Lifing.

Book Superalloys 1984

Download or read book Superalloys 1984 written by Maurice Gell and published by Society for Mining Metallurgy & Exploration. This book was released on 1984 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: