BS ISO 28703:2011 BSl Standards Publication Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for thermal-shock resistance of porous ceramics bsi. ..making excellence a habit: BS ISO 28703:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 28703:2011. The UK participation in its preparation was entrusted to Technical CommitteeRPl/13,Advancedtechnical ceramics. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @BSI 2011 ISBN9780580664663 ICS 81.060.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2011. Amendments issued since publication Date Text affected BS ISO 28703:2011 INTERNATIONAL ISO STANDARD 28703 First edition 2011-08-15 Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for thermal-shock resistance of porous ceramics Ceramiquestechniques-Methoded'essai de la resistance au choc thermiquedesceramiquesporeuses Reference number ISO 28703:2011(E) TO @ISO 2011 BSISO28703:2011 ISO28703:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @IsO2011-Allrightsreserved BSISO28703:2011 ISO 28703:2011(E) Contents Page Foreword iv 1 Scope 2 Normative references. 3 Terms and definitions. 4 Principle 5 Apparatus 5.1 Electricfurnace 5.2 Cooling bath... 5.3 Temperature-measuring device 5.4 Vernier callipers... 5.5 Micrometer callipers 5.6 Thermocouples 6 Test specimens 6.1 Shape and size. 6.2 Pretreatment 6.3 Numberofspecimen 7 Procedure 8 Bending test.... 8.1 Bending strength. 8.2 Mean bending strength 9 Thermal-shock resistance. 5 10 Test report @ ISO 2011 - All rights reserved ili BS ISO 28703:2011 ISO28703:2011(E) Foreword technical committees. Each member body interested in a subject for which a technical committee has been Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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 ISO28703waspreparedbyTechnicalCommitteeISO/TC206,Fineceramics. iv @ISO 2011All rights reserved BSISO28703:2011 INTERNATIONAL STANDARD ISO28703:2011(E) Fineceramics(advancedceramics,advancedtechnical ceramics) Test method for thermal-shock resistance of porousceramics 1 Scope materials during design. NOTE 1 There are three kinds of test methods for thermal shock, namely a rapid cooling method, a rapid heating method, and the rapid heating-cooling method. Ceramics are sensitive to tensile stress, and the surface region has International Standard specifies the rapid cooling method. NOTE 2 2 Normativereferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including a