COSP for Windows: Strategies for Rapid Analyses of Cyclic Oxidation Behavior PDF Download
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Author: James L. Smialek
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 20
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Book Description
Author: James L. Smialek
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 20
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Book Description
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781724075062
Category : Science
Languages : en
Pages : 32
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Book Description
COSP is a publicly available computer program that models the cyclic oxidation weight gain and spallation process. Inputs to the model include the selection of an oxidation growth law and a spalling geometry, plus oxide phase, growth rate, spall constant, and cycle duration parameters. Output includes weight change, the amounts of retained and spalled oxide, the total oxygen and metal consumed, and the terminal rates of weight loss and metal consumption. The present version is Windows based and can accordingly be operated conveniently while other applications remain open for importing experimental weight change data, storing model output data, or plotting model curves. Point-and-click operating features include multiple drop-down menus for input parameters, data importing, and quick, on-screen plots showing one selection of the six output parameters for up to 10 models. A run summary text lists various characteristic parameters that are helpful in describing cyclic behavior, such as the maximum weight change, the number of cycles to reach the maximum weight gain or zero weight change, the ratio of these, and the final rate of weight loss. The program includes save and print options as well as a help file. Families of model curves readily show the sensitivity to various input parameters. The cyclic behaviors of nickel aluminide (NiAl) and a complex superalloy are shown to be properly fitted by model curves. However, caution is always advised regarding the uniqueness claimed for any specific set of input parameters, Smialek, James L. and Auping, Judith V. Glenn Research Center NASA/TP-2002-211108, E-12955, NAS 1.60:211108
Author: James L. Smialek
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 11
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Book Description
COSP is a publicly available computer program that models the cyclic oxidation weight gain and spallation process. Inputs to the model include the selection of an oxidation growth law and a spalling geometry, plus oxide phase, growth rate, spall constant, and cycle duration parameters. Output includes weight change, the amounts of retained and spalled oxide, the total oxygen and metal consumed, and the terminal rates of weight loss and metal consumption. The present version is Windows based and can accordingly be operated conveniently while other applications remain open for importing experimental weight change data, storing model output data, or plotting model curves. Point-and-click operating features include multiple drop-down menus for input parameters, data importing and quick, on-screen plots showing one selection of the six output parameters for up to 10 models.
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 890
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Book Description
Author: Pakseresht, Amir Hossein
Publisher: IGI Global
ISBN: 1522541950
Category : Technology & Engineering
Languages : en
Pages : 581
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Book Description
Heat resistant layers are meant to withstand high temperatures while also protecting against all types of corrosion and oxidation. Therefore, the micro-structure and behavior of such layers is essential in understanding the functionality of these materials in order to make improvements. Production, Properties, and Applications of High Temperature Coatings is a critical academic publication which examines the methods of creation, characteristics, and behavior of materials used in heat resistant layers. Featuring coverage on a wide range of topics such as, thermal spray methods, sol-gel coatings, and surface nanoengineering, this book is geared toward students, academicians, engineers, and researchers seeking relevant research on the methodology and materials for producing effective heat resistant layers.
Author: Kang N. Lee
Publisher: MDPI
ISBN: 3039365177
Category : Science
Languages : en
Pages : 168
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Book Description
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.
Author: The Minerals, Metals & Materials Society (TMS)
Publisher: John Wiley & Sons
ISBN: 1118787978
Category : Technology & Engineering
Languages : en
Pages : 345
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Book Description
Materials Lifetime Science and Engineering ...
Author: M Schütze
Publisher: Elsevier
ISBN: 1845693477
Category : Technology & Engineering
Languages : en
Pages : 297
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Book Description
The thermal cyclic oxidation test has become one of the most widely accepted ways of measuring high temperature corrosion. There has long been a need for an agreed code of practice with standardised methods and procedures to ensure both the comparability and reliability of the results obtained. Based on an EU project, ‘Cyclic oxidation testing – development of a code of practice for the characterisation of high temperature materials performance’ (COTEST), this volume provides the essential background to an appropriate code of practice. The first part of the book reviews the range of existing test procedures. Part two summarises research on the influence of various test parameters on thermal cycling oxidation behaviour, including both long dwell and short dwell thermal cycling oxidation. The third and final part of the book describes the resulting code of practice which is being considered by the ISO/TC 156 Working Group 13 responsible for an appropriate international standard. With its distinguished editor and team of contributors, this important book is a standard reference for all those conducting thermal cycling oxidation testing or assessing its implications in such sectors as the power industry. Provides the essential background for an appropriate code of practice Reviews the range of existing test procedures
Author: Sudhangshu Bose
Publisher: Butterworth-Heinemann
ISBN: 0128047437
Category : Technology & Engineering
Languages : en
Pages : 418
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Book Description
High Temperature Coatings, Second Edition, demonstrates how to counteract the thermal effects of rapid corrosion and degradation of exposed materials and equipment that can occur under high operating temperatures. This is the first true practical guide on the use of thermally protective coatings for high-temperature applications, including the latest developments in materials used for protective coatings. It covers the make-up and behavior of such materials under thermal stress and the methods used for applying them to specific types of substrates, as well as invaluable advice on inspection and repair of existing thermal coatings. With his long experience in the aerospace gas turbine industry, the author has compiled the very latest in coating materials and coating technologies, as well as hard-to-find guidance on maintaining and repairing thermal coatings, including appropriate inspection protocols. The book is supplemented with the latest reference information and additional support to help readers find more application- and industry-type coatings specifications and uses. Offers an overview of the underlying fundamental concepts of thermally-protective coatings, including thermodynamics, energy kinetics, crystallography and equilibrium phases Covers essential chemistry and physics of underlying substrates, including steels, nickel-iron alloys, nickel-cobalt alloys and titanium alloys Provides detailed guidance on a wide variety of coating types, including those used against high temperature corrosion and oxidative degradation and thermal barrier coatings
Author: M Schütze
Publisher: Elsevier
ISBN: 1845694473
Category : Technology & Engineering
Languages : en
Pages : 652
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Book Description
High-temperature corrosion is a major problem affecting sectors such as the power generation, aerospace and metal-working industries. This important book summarises a wide range of research on ways of dealing with this important problem. The first part of the book reviews ways of modifying alloys to improve high-temperature corrosion resistance. The second part discusses surface treatments such as pre-treatments and coatings. The third part of the book summarises research on testing for high-temperature corrosion resistance and the development of common testing standards. It also reviews research on the behaviour of alloys in a wide range of service conditions such as furnace and boiler environments. The final part of the book discusses ways of modelling high-temperature corrosion processes to improve material performance and service life.With its distinguished editors and team of contributors drawn from some of the leading centres of research in the field, Novel approaches to improving high-temperature corrosion resistance is a standard reference for all those studying and dealing with high-temperature corrosion. Summarises a wide range of research on ways of dealing with high-temperature corrosion Discusses ways of modelling high-temperature corrosion processes to improve material performance and service life A standard reference for all those studying and dealing with high-temperature corrosion
