Corrosion Performance Of Structural Alloys In Oxygen PDF Download
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Author | : |
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Total Pages | : 12 |
Release | : 1998 |
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Download Corrosion Performance of Structural Alloys in Oxygen Book in PDF, ePub and Kindle
Component reliability and long-term trouble-free performance of structural materials are essential in power-generating processes that utilize coal as a feedstock. The combustion environments encompass a wide range of oxygen partial pressures, from excess-air conditions in conventional systems to air-deficient conditions in low-NO(subscript x) systems. Apart from the environmental aspects of the effluent from coal combustion, one concern from the systems standpoint is the aggressiveness of the combustion environment toward boiler structural components such as waterwall tubes and steam superheaters. The corrosion tests in this program address the individual and combined effects of oxygen, sulfur, and chlorine on the corrosion response of several ASME-coded and noncoded boiler materials exposed to air-deficient and excess-air combustion conditions. Data in this paper address the corrosion behavior of structural materials such as Type 347 stainless steel, Alloys 800, 825, 625, 214, and Hastelloy X when exposed at 650 C to excess-air combustion conditions with and without HCl. Thermodynamic calculations were made to evaluate the gas chemistries formed from coal combustion. The results of such calculations, coupled with oxygen/sulfur/chlorine thermochemical diagrams, were used to select the gas environments for the laboratory test program. Results are presented for weight change, thickness loss, microstructural characteristics of corrosion products, mechanical integrity and cracking of scales, and the mechanistic understanding gained on the role of sulfur and chlorine in the corrosion process.
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Total Pages | : 14 |
Release | : 1999 |
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Download Corrosion Performance of Structural Alloys Book in PDF, ePub and Kindle
Component reliability and long-term trouble-free performance of structural materials are essential in power-generating and gasification processes that utilize coal as a feedstock. During combustion and conversion of coal, the environments encompass a wide range of oxygen partial pressures, from excess-air conditions in conventional boilers to air-deficient conditions in 10W-NO(subscript x) and gasification systems. Apart from the environmental aspects of the effluent from coal combustion and conversion, one concern from the systems standpoint is the aggressiveness of the gaseous/deposit environment toward structural components such as waterwall tubes, steam superheaters, syngas coolers, and hot-gas filters. The corrosion tests in the program described in this paper address the individual and combined effects of oxygen, sulfur, and chlorine on the corrosion response of several ASME-coded and noncoded structural alloys that were exposed to air-deficient and excess-air environments typical of coal-combustion and gasification processes. Data in this paper address the effects of preoxidation on the subsequent corrosion performance of structural materials such as 9Cr-1Mo ferritic steel, Type 347 austenitic stainless steel, Alloys 800, 825, 625, 214, Hastelloy X, and iron aluminide when exposed at 650 C to various mixed-gas environments with and without HCI. Results are presented for scaling kinetics, microstructural characteristics of corrosion products, detailed evaluations of near-surface regions of the exposed specimens, gains in our mechanistic understanding of the roles of S and Cl in the corrosion process, and the effect of preoxidation on subsequent corrosion.
Author | : Mariano Iannuzzi |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 390 |
Release | : 2021-05-18 |
Genre | : Science |
ISBN | : 3035730946 |
Download Corrosion. Structural Metals and Alloys (2019-2020) Book in PDF, ePub and Kindle
Aggregated Book
Author | : David John Young |
Publisher | : Elsevier |
Total Pages | : 593 |
Release | : 2008-10-03 |
Genre | : Business & Economics |
ISBN | : 008044587X |
Download High Temperature Oxidation and Corrosion of Metals Book in PDF, ePub and Kindle
The book is concerned with understanding the fundamental mechanisms of high temperature alloy oxidation. It uses this understanding to develop methods of predicting oxidation rates and the way they change with temperature, gas chemistry and alloy composition. The focus is on designing (or selecting) alloy compositions which provide optimal resistance to attack by corrosive gases. . Emphasises quantitative calculations for predicting reaction rates and the effects of temperature, oxidant activities and alloy compositions. . Uses phase diagrams and diffusion paths to analyse and interpret scale structures and internal precipitation distributions . Provides a detailed examination of corrosion in industrial gases (water vapour effects, carburisation and metal dusting, sulphidation) . Text is well supported by numerous micrographs, phase diagrams and tabulations of relevant thermodynamic and kinetic data . Combines physical chemistry and materials science methodologies.
Author | : A. S. Khanna |
Publisher | : ASM International |
Total Pages | : 337 |
Release | : 2002-01-01 |
Genre | : Technology & Engineering |
ISBN | : 0871707624 |
Download Introduction to High Temperature Oxidation and Corrosion Book in PDF, ePub and Kindle
This text for graduate and post graduate students covers fundamentals of high temperature corrosion and related topics. Early chapters cover the thermodynamics and kinetics of oxidation and defect structure of oxides and diffusion in oxides, and later chapters cover thin and thick layer oxidation, o
Author | : Wolfram Fürbeth |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 566 |
Release | : 2021-05-27 |
Genre | : Science |
ISBN | : 3035735263 |
Download Corrosion. Protection of Structural Metals and Alloys (2017-2018) Book in PDF, ePub and Kindle
Aggregated Book
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Total Pages | : 15 |
Release | : 1995 |
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Download Corrosion Performance of Fe-Cr-Al and Fe Aluminide Alloys in Complex Gas Environments Book in PDF, ePub and Kindle
Alumina-forming structural alloys can offer superior resistance to corrosion in the presence of sulfur-containing environments, which are prevalent in coal-fired fossil energy systems. Further, Fe aluminides are being developed for use as structural materials and/or cladding alloys in these systems. Extensive development has been in progress on Fe3Al-based alloys to improve their engineering ductility. In addition, surface coatings of Fe aluminide are being developed to impart corrosion resistance to structural alloys. This paper describes results from an ongoing program that is evaluating the corrosion performance of alumina-forming structural alloys, Fe-Al and Fe aluminide bulk alloys, and Fe aluminide coatings in environments typical of coal-gasification and combustion atmospheres. Experiments were conducted at 650-1000°C in simulated oxygen/sulfur gas mixtures. Other aspects of the program are corrosion evaluation of the aluminides in the presence of HCl-containing gases. Results are used to establish threshold Al levels in the alloys for development of protective alumina scales and to determine the modes of corrosion degradation that occur in the materials when they are exposed to S/Cl-containing gaseous environments.
Author | : Gerhard Welsch |
Publisher | : ASM International(OH) |
Total Pages | : 448 |
Release | : 1996 |
Genre | : Science |
ISBN | : |
Download Oxidation and Corrosion of Intermetallic Alloys Book in PDF, ePub and Kindle
This handbook provides researchers and development engineers with essential information on intermetallics for high temperature applications. The information will enable users to make choices by considering cost, properties, and performance for long-term use at elevated temperatures and in other adverse environmental conditions. It provides an overview of processing, structural and mechanical properties, applications, behavior and endurance at high temperature and in oxidizing conditions. It also focuses on 'pesting' disintegration, corrosion and oxidation phenomena at intermediate temperatures, corrosion embrittlement at ambient temperatures, aqueous corrosion and corrosion sensitive embrittlement properties.
Author | : Francis Froes |
Publisher | : Woodhead Publishing |
Total Pages | : 656 |
Release | : 2018-05-09 |
Genre | : Technology & Engineering |
ISBN | : 0128124571 |
Download Titanium in Medical and Dental Applications Book in PDF, ePub and Kindle
Titanium in Medical and Dental Applications is an essential reference book for those involved in biomedical materials and advanced metals. Written by well-known experts in the field, it covers a broad array of titanium uses, including implants, instruments, devices, the manufacturing processes used to create them, their properties, corrosion resistance and various fabrication approaches. Biomedical titanium materials are a critically important part of biomaterials, especially in cases where non-metallic biomedical materials are not suited to applications, such as the case of load-bearing implants. The book also covers the use of titanium for implants in the medical and dental fields and reviews the use of titanium for medical instruments and devices. Provides an understanding of the essential and broad applications of Titanium in both the medical and dental industries Discusses the pathways to manufacturing titanium into critical biomedical and dental devices Includes insights into further applications within the industry
Author | : Roger Francis |
Publisher | : CRC Press |
Total Pages | : 108 |
Release | : 2019-05-14 |
Genre | : Technology & Engineering |
ISBN | : 1000053989 |
Download Corrosion Performance of Metals for the Marine Environment EFC 63 Book in PDF, ePub and Kindle
Engineers with an interest in the marine environment can take advantage of many years of accumulated corrosion experience in a quick and concise manner with this publication. It covers the corrosion behavior in sea water of steel, stainless steel and cast iron as well as alloys of copper, aluminum, nickel and titanium. Applications, commonly-used alloy compositions and mechanical properties are also covered for each alloy system, plus a special section is devoted to galvanic corrosion and its avoidance.