BS ISO 17248-2015 Corrosion of metals and alloys Test method for high temperature corrosion testing of metallic materials by embedding in salt ash or other solids《金属与合金的腐蚀 通过埋入盐 灰或.pdf
《BS ISO 17248-2015 Corrosion of metals and alloys Test method for high temperature corrosion testing of metallic materials by embedding in salt ash or other solids《金属与合金的腐蚀 通过埋入盐 灰或.pdf》由会员分享,可在线阅读,更多相关《BS ISO 17248-2015 Corrosion of metals and alloys Test method for high temperature corrosion testing of metallic materials by embedding in salt ash or other solids《金属与合金的腐蚀 通过埋入盐 灰或.pdf(26页珍藏版)》请在麦多课文档分享上搜索。
1、BSI Standards PublicationBS ISO 17248:2015Corrosion of metals andalloys Test method forhigh temperature corrosiontesting of metallic materialsby embedding in salt, ash, orother solidsBS ISO 17248:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17248:2015.T
2、he UK participation in its preparation was entrusted to TechnicalCommittee ISE/NFE/8, Corrosion of metals and alloys.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract
3、. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 78212 1ICS 77.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、 theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedBS ISO 17248:2015 ISO 2015Corrosion of metals and alloys Test method for high temperature corrosion testing of metallic materials by embedding in salt, ash, or other solidsCorrosion des
5、mtaux et alliages Mthode dessai pour essais de corrosion haute temprature de matriaux mtalliques par enfouissement dans du sel, des cendres ou dautres solidesINTERNATIONAL STANDARDISO17248First edition2015-04-15Reference numberISO 17248:2015(E)BS ISO 17248:2015ISO 17248:2015(E)ii ISO 2015 All rights
6、 reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior w
7、ritten permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO
8、 17248:2015ISO 17248:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Test method . 24.1 Principle 24.2 Reagents and materials . 24.2.1 Test pieces . 24.2.2 Corrosive powder 34.3 Test apparatus . 34.3.1 Design of apparatus . 34.3.2 Temperature monitorin
9、g 44.3.3 Gas supply 54.4 Procedure 54.4.1 Preparation and placement of the test piece . 54.4.2 Test environment 64.4.3 Heating method 64.4.4 Test duration . 64.4.5 Cooling of test pieces 74.4.6 Discontinuous testing 74.5 Determination of mass change 74.5.1 Principle 74.5.2 Measurements prior to test
10、ing 74.5.3 Descaling prior to mass determination 74.5.4 Measurement of corrosion mass loss . 85 Examination of surface and microstructure of corroded test pieces . 86 Report 86.1 Matters to be described . 86.1.1 Test material 86.1.2 Test piece 96.1.3 Testing environments 96.1.4 Test results 96.2 Sup
11、plementary note 10Annex A (informative) Chemical and electrolytic procedures for removal of corrosion products from fully embedded test pieces .11Bibliography .14 ISO 2015 All rights reserved iiiContents PageBS ISO 17248:2015ISO 17248:2015(E)ForewordISO (the International Organization for Standardiz
12、ation) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be
13、 represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to
14、 develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of th
15、e ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified dur
16、ing the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the mea
17、ning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 15
18、6, Corrosion of metals and alloys.iv ISO 2015 All rights reservedBS ISO 17248:2015ISO 17248:2015(E)IntroductionIn contrast to high temperature corrosion occurring in a gaseous environment, which is covered in ISO 21608 and ISO 13573, this International Standard focuses on high temperature corrosion
19、occurring on materials that are in direct contact with solid corrosive substances, commonly referred to as under-deposit corrosion.This International Standard considers the case of a metallic material embedded, partially or completely, in a corrosive powder that is present in abundance and remains c
20、ompletely or partially in the solid state throughout high temperature exposure. Partially embedded test pieces offer the advantage of allowing investigation of corrosion at three different positions, i.e. under the powder, at the powder/gas phase interface, and in the gas phase above the corrosive p
21、owder.The closely-related condition involving immersion in a molten salt or other liquid is described in ISO 17245, and that involving application of a surface deposit of salt, ash, or other substances in ISO 17224. ISO 2015 All rights reserved vBS ISO 17248:2015BS ISO 17248:2015Corrosion of metals
22、and alloys Test method for high temperature corrosion testing of metallic materials by embedding in salt, ash, or other solids1 ScopeThis International Standard specifies the method for high temperature corrosion testing of metallic materials by embedding in a corrosive powder made up of salt, ash,
23、and/or other solids and exposing them to high temperature in a controlled gas environment to evaluate their corrosion resistance.Two options exist: fully embedding and partially embedding.Fully embedding is used in cases in which a mass change measurement is required.Partially embedding is used to i
24、nvestigate three potentially different interaction zones on a single test piece, i.e. the embedded part, the non-embedded part, and the gas/powder interface region. Therefore, gravimetric measurements are not appropriate and metallographic investigations are necessary instead.This International Stan
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