The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum
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The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum
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Author : B. A. Wilcox
language : en
Publisher:
Release Date : 1961
The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum written by B. A. Wilcox and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Tantalum categories.
The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum
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Author :
language : en
Publisher:
Release Date : 1961
The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
The air oxidation of unstressed tantalum, measured by decrease in metal thickness over the temperature range 427 to 649 C (800 to 1200 F) was found to proceed initially according to a parabolic rate law. At temperatures of 510 to 649 C (950 to 1200 F) the oxidation changed from parabolic to linear behavior, after times at temperature sufficient to allow breakdown of the protective initial oxide scale. The transition time from parabolic to linear oxidation decreased with increasing temperature. Linear and parabolic rate constants were evaluated for the scaling process. Activation energies of 28,600 cal/mol for linear oxidation, and of 40,800 cal/mol for parabolic oxidation were determined. Oxidation tests in the stressed condition, (20,000 and 24,000 psi) increased the parabolic scaling rate about two to four times over than of unstressed samples at the same temperature. No enhancement of the linear oxidation rate was noted. (Author).
The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum
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Author :
language : en
Publisher:
Release Date : 1961
The Effect Of Concurrent Stressing On The Air Oxidation Of Tantalum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
The air oxidation of unstressed tantalum, measured by decrease in metal thickness over the temperature range 427 to 649 C (800 to 1200 F) was found to proceed initially according to a parabolic rate law. At temperatures of 510 to 649 C (950 to 1200 F) the oxidation changed from parabolic to linear behavior, after times at temperature sufficient to allow breakdown of the protective initial oxide scale. The transition time from parabolic to linear oxidation decreased with increasing temperature. Linear and parabolic rate constants were evaluated for the scaling process. Activation energies of 28,600 cal/mol for linear oxidation, and of 40,800 cal/mol for parabolic oxidation were determined. Oxidation tests in the stressed condition, (20,000 and 24,000 psi) increased the parabolic scaling rate about two to four times over than of unstressed samples at the same temperature. No enhancement of the linear oxidation rate was noted. (Author).
A Review Of The Air Force Materials Research And Development Program
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Author : United States. Wright Air Development Division
language : en
Publisher:
Release Date : 1954
A Review Of The Air Force Materials Research And Development Program written by United States. Wright Air Development Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Materials categories.
A review of the research and development work sponsored in the field of materials and processes over the past decade is presented. Abstracts of WADC Technical Reports for the period 1 July 1951 to 30 June 1953 are included. A summary of Technical Reports published in the areas of metallurgy, textiles, petroleum products, structural materials, rubbers, plastics, packaging, protective treatments, analysis and measurements are included also.
A Review Of The Air Force Materials Research And Development Program
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Author : Donna J. Tate
language : en
Publisher:
Release Date : 1962
A Review Of The Air Force Materials Research And Development Program written by Donna J. Tate and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Materials categories.
These reports cover basic and applied research in the materials area being conducted by the Metals and Ceramics, Non-metallic Materials, Physics, Manufacturing Technology and Applications Laboratories of the Directorate of Materials and Processes.
Corrosion By Liquid Metals
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Author : J. E. Draley
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Corrosion By Liquid Metals written by J. E. Draley and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Science categories.
The Corrosion Resistant Metals Committee and the Nuclear Metallurgy Committee of the Institute of Metals Division of The Metallurgical Society of AlME sponsored a 2-1/2 day symposium on "Corrosion by Liquid Metals". The symposium was held in Philadelphia, October 13-15, 1969, during the 1969 Fall Meeting of the Metallurgical Society and the Materials Engineering Con gress of the American Society for Metals. Cosponsors included the American Society for Metals and the American Nuclear Society. The purpose of the symposium was to bring together the several aspects of the subject of corrosion by liquid metals, so that perspective could be provided on the entire subject, to help in dividuals dealing with liquid metal corrosion problems acquire a sound basis of understanding, and to provide an opportunity for discussion between those doing research in this field. An exposition of the subject is timely, in view of the in creasing development of liquid metal heat and power sources for special purposes, including heat-pipe systems, NASA's SNAP power systems, and the AEC's liquid metal fast breeder reactor system. This book contains the proceedings of the symposium divided into four separate topics: I. Corrosion of Steels by Sodium, II. Alkali-Refractory Metal Interactions, III. Corrosion by Non-Alkali Metals, and IV. Analysis of Solid-Liquid Metal Inter actions (two sessions).
U S Government Research Reports
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Author :
language : en
Publisher:
Release Date : 1964
U S Government Research Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
Charles J Cleary Awards For Papers On Material Sciences
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Author : Library of Congress. Science and Technology Division
language : en
Publisher:
Release Date : 1962
Charles J Cleary Awards For Papers On Material Sciences written by Library of Congress. Science and Technology Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Materials categories.
Materials Research And Standards
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Author :
language : en
Publisher:
Release Date : 1962
Materials Research And Standards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Building materials categories.
Reactor Materials
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Author :
language : en
Publisher:
Release Date : 1968
Reactor Materials written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Nuclear reactors categories.