Crevice Corrosion and the Lifetime Performance Ot Titanium Nuclear Waste Containers PDF Download

Author: Atomic Energy of Canada Limited
Publisher:
ISBN:
Category :
Languages : en
Pages : 23

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Author: Brian Minoru Ikeda
Publisher: Pinawa, Man. : Whiteshell Laboratories
ISBN: 9780660172682
Category : Metal containers
Languages : en
Pages : 23

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Book Description

Author: Shoesmith, David William
Publisher: Pinawa, Man. : Whiteshell Laboratories
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: D. W. Shoesmith
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Candidate materials for reactor components of candu primary water systems were corrosion tested in pressurized water at 66 degrees c, 149 degrees c and 293 degrees c for periods of about 12 months. phase iv (ph 10 lioh, approximately 200 ppb o2) was complementary to phase i (ph 10 lioh, less than 5 ppb o2), and with the object of identifying any changes in material corrosion performance subsequent to the possibility of a small ingress of air into the candu-phwr primary water system. dissolved oxygen instigated heavy localized corrosion attack on carbon steel and the low alloy steels, particularly at the lower temperatures of exposure. this localized attack on carbon steel was more apparent in lithiated water than in ammoniated water. in high temperature (293 degrees c) water the presence of dissolved oxygen was beneficial to the uniform corrosion resistance of both carbon steel and stainless steels. dissolved oxygen was deleterious to the corrosion performance of monel 400, chromium based surfaces, sn-bronzes and to some extent 17-4 ph steel and nitrided steel surfaces. after long cumulative exposures to high temperature water there was no evidence of stress corrosion cracking in 17-4 ph (h1050) steel, carpenter custom 455 (h1000) steel, titanium alloys and ni-cr-fe alloy steam generator tubing. cracking was observed, however, in cu-be roll pins and in the carpenter custom 455 (h900) steel.

Author: D. W. Shoesmith
Publisher: Pinawa, Man. : Whiteshell Laboratories
ISBN: 9780660160795
Category : Combustible - Conteneur - Corrosion - Dechet - Duree - Fissuration - Nucleaire - Stockage - Titane - Vie
Languages : en
Pages : 29

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Author: MG. Bailey
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 17

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Book Description
To predict the expected lifetimes of nuclear waste containers under Canadian disposal vault conditions, specific criteria upon which a predictive model can be based must be developed. The anticipated evolution of the corrosion of titanium waste containers is described. Failure is most likely to occur by a combination of crevice corrosion, hydrogen-induced cracking and general corrosion and, for long lifetimes, the duration of crevice corrosion must be limited. The crevice corrosion of Grade-2 and Grade-12 titanium has been studied using a galvanic coupling technique. The propagation of crevice corrosion on the Grade-2 material is dependent on both temperature and oxygen concentration and repassivation occurs once the oxygen is consumed. The propagation of crevice corrosion on the Grade-12 alloy appears almost independent of temperature, and repassivation occurs for T ?73°C even in the presence of copious amounts of oxygen. The implications for predicting the lifetimes of containers under disposal conditions are discussed.

Author: D. W. Shoesmith
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16

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Corrosion resistant materials are being considered for the metallic barrier of the Yucca Mountain Project's high-level radioactive waste disposal containers. Nickel-chromium-molybdenum alloys and titanium alloys have good corrosion resistance properties and are considered good candidates for the metallic barrier. The localized corrosion phenomena, pitting and crevice corrosion, are considered as potentially limiting for the barrier lifetime. An understanding of the mechanisms of localized corrosion and of how various parameters affect it will be necessary for adequate performance assessment of candidate container materials. Examples of some of the concerns involving localized corrosion are discussed. The effects of various parameters, such as temperature and concentration of halide species, on localized corrosion are given. In addition, concerns about aging of the protective oxide layer in the expected service temperature range (50 to 250°C) are presented. Also some mechanistic considerations of localized corrosion are given. 45 refs., 1 tab.

Author: R. Winston Revie
Publisher: John Wiley & Sons
ISBN: 0470080329
Category : Technology & Engineering
Languages : en
Pages : 1299

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Book Description
This book serves as a reference for engineers, scientists, and students concerned with the use of materials in applications where reliability and resistance to corrosion are important. It updates the coverage of its predecessor, including coverage of: corrosion rates of steel in major river systems and atmospheric corrosion rates, the corrosion behavior of materials such as weathering steels and newer stainless alloys, and the corrosion behavior and engineering approaches to corrosion control for nonmetallic materials. New chapters include: high-temperature oxidation of metals and alloys, nanomaterials, and dental materials, anodic protection. Also featured are chapters dealing with standards for corrosion testing, microbiological corrosion, and electrochemical noise.

Author: F. P. IJsseling
Publisher: Woodhead Publishing Limited
ISBN:
Category : Science
Languages : en
Pages : 220

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Book Description
Crevice corrosion is a complex and technically interesting corrosion mechanism but its commercial significance should not be ignored. This survey, the most complete overview of crevice corrosion available today, covers many alloys which can suffer crevice attack but focuses mainly on stainless steels. The survey covers mechanisms, test methods and results, practical experience, protective measures and monitoring.