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Friday, July 17, 2020 | History

2 edition of basic corrosion mechanisms of HLW glasses found in the catalog.

basic corrosion mechanisms of HLW glasses

R. Conradt

basic corrosion mechanisms of HLW glasses

by R. Conradt

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  • 33 Currently reading

Published by Commission ofthe European Communities in Luxembourg .
Written in English


Edition Notes

StatementR. Conradt, H. Roggendorf, R. Ostertag.
SeriesNuclear science and technology
ContributionsRoggendorf, H., Ostertag, R., Commission of the European Communities. Directorate-General for Science, Research and Development.
ID Numbers
Open LibraryOL20646326M
ISBN 109282565602

  Glass corrosion that occurs when in contact with aqueous media has been studied in many fields, such as biogeochemical weathering of volcanic glasses in seawater, 1,2 CO 2 sequestration, 3.   ISG is a model material used to understand the dissolution and corrosion mechanisms of borosilicate glasses, which are used to store radioactive waste. mechanism of high-level waste (HLW.

Abstract. The effects of fluoride on the corrosion behavior of Titanium Grade 7 (% Pd) have been investigated. Up to mol/L fluoride was added to the NaCl brines at 95 C, and three pH values of 4, 8, and 11 were selected for studying pH dependence of fluoride effects. nisms involved, corrosion engineers may begin to eliminate corrosion by design. The basic galvanic corrosion mechanism follows the principle of a battery. A typical battery requires two dissimilar metals con-nected together and immersed in an elec For a comprehensive reference book see: ASM Handbook Volume 13 als Park.

No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the . Safety Initiative 5 is to reduce safety and environmental risk from tank leaks. Item d of Safety Initiative 5 is to complete corrosion studies of single-shell tanks to determine failure mechanisms and corrosion control options to minimize further degradation by June This report has been prepared to fulfill Safety Initiative 5, Item d.


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Basic corrosion mechanisms of HLW glasses by R. Conradt Download PDF EPUB FB2

Introduction of HLW-glass corrosion. Over the past 20 years, the understanding of glass dissolution processes has advanced significantly with a variety of dissolution tests. However, it is still difficult to predict the long-term disposal behavior of HLW glasses due to Cited by: 8.

In all solutions studied, the dissolution rate slows down after Si saturation to the same low constant rate depending on the solution pH. The impact of the results on the corrosion mechanism and long-term behaviour of HLW glasses is by: 8.

The leaching behavior of SL-1 glass in deionized water has been investigated. Compared to the HLW-glass, the network structure of SL-1 glass is weak. It was found that the ion-exchange reactions dominated the glass corrosion process with water Cited by:   The corrosion behaviour of the HLW glass GP WAK1 containing simulated HLW oxides from the WAK reprocessing plant in Karlsruhe is investigated in long-term corrosion experiments at high S V ratios in two reference brines at and °C.

In case of the Basic corrosion mechanisms of HLW glasses book 2-rich solution the leachate becomes increasingly acid with reaction time up to a final pH of about at ° by: 6. A Contribution to the Modelling of the Corrosion Process for HLW Glasses. MRS Proceedings, Vol. 44, Issue., Such predictions can be made from the results of short-term tests only if the mechanisms of waste glass corrosion are understood.

() Corrosion of Glass, Books for the Glass Industry. McVay, G. and Pederson, L. ( This paper presents some salient results of corrosion experiments car-ried out in distilled water. Corrosion of complex nuclear waste glasses in distilled water may be quite complex [1].

These tests were designed to reach a basic understanding of the corrosion mechanisms of some European nuclear. The corrosion behavior of glass fibers synthesized from the International Simple Glass (ISG) reference ingot, an international High‐Level Waste (HLW) borosilicate glass standard, is reported.

Bundles of glass fibers were submerged in mL of four different solutions of initial pH values (pH i) of,and for static. The corrosion behaviour in distilled water of two simulated candidate high level waste borosilicate glasses (SANL3C2 and SM58LW11) his been investigated at 90°C for different SA/V condition.

Phosphate glass is particularly attractive for immobilisation of high Al and Na wastes. Fig. shows the glass-forming regions of the Na 2 O–Al 2 O 3 –P 2 O 5 system (Poluektov, Schmidt, Kascheev, & Ojovan, ).For low-to-moderate melting temperatures, the optimum range.

Basic Concepts of Corrosion L. Shreir{This article is a revision of the Third Edition article by L. Shreir, volume 1, pp –, Elsevier B.V. Introduction 89 Definitions of Corrosion 90 Methods of Approach to Corrosion Phenomena Their mechanisms of atmospheric corrosion are still not fully understood and need deeper investigation.

A multi-scale analysis of K–Ca rich silicate glasses (ancient and model glass), showed mod. Radionuclide release rates of HLW glasses in brines are normally orders of magnitude lower than glass corrosion rates. Various mechanisms were invoked to explain the experimental release; they may.

Premature failure of bridges or structures due to corrosion can also result in human injury, loss of life, and collateral damage. Written by an authority in corrosion science, Fundamentals of Corrosion: Mechanisms, Causes, and Preventative Methods comprehensively describes the causes of corrosion—and the means to limit or prevent it.

Conradt, R., Roggendorf, H., and Ostertag () The basic corrosion mechanisms of HLW, Final Report, Fraunhofer Institut München, CEC Nuclear Science and Technology Report EUR EN, ISBN 92–––2 Brussels–Luxembourg. Google Scholar. Stress-corrosion mechanisms in silicate glasses. Matteo Ciccotti. Published 22 October • IOP the basic mechanism of the stress-corrosion reaction was associated with the stress-enhanced thermal activation of a dissociative hydrolysis reaction represented in figure 7 for the case of (well reported in his book of ), water.

As is true for glasses and ceramics, passivation of metals is achieved when the corrosion rate is very low due to the presence of a thin and dense film under conditions where a high corrosion rate. To study the effect of cast defects on the corrosion behavior and mechanism of the UNS C alloy in seawater, an investigation was conducted by weight loss determination, scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), X-ray diffraction (XRD) and electrochemical testing of the specimen with and without cast.

As part of the study of the performance of the French R7T7 HLW glass in underground disposal conditions, integrated in situ corrosion tests with alpha-doped SON68 glass samples were performed. The mechanisms are presented for a general understanding of glass corrosion and may help to select appropriate substrate glasses and their modes of storage and cleaning, which depend on the.

This study explores the corrosion interactions between a metallic canister material, stainless steel (SS)and an I-bearing ceramic waste form, lead vanado-iodoapatite (I-APT, Pb(VO4)6I. @article{osti_, title = {The effects of the glass surface area/solution volume ratio on glass corrosion: A critical review}, author = {Ebert, W L}, abstractNote = {This report reviews and summarizes the present state of knowledge regarding the effects of the glass surface area/solution volume (SA/V) ratio on the corrosion behavior of borosilicate waste glasses.Glass Corrosion.

Glass is much more resistant to corrosion than most materials, so much so that it is easy to think of it as corrosion-proof. Glass windows after several years exposure to the elements remain clear and apparently unaffected.

Glass bottles hold a .Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their environment.

Corrosion engineering is the field dedicated to controlling and preventing corrosion. In the most common use of the word, this means.