BS ISO 14627:2012 BS Standards Publication Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for fracture resistance of silicon nitride materials for rolling bearing balls at room temperature by indentation fracture (IF) method bsi. ..making excellence a habit. BSISO14627:2012 BRITISHSTANDARD National foreword This British Standard is the UK implementation ofISO 14627:2012. The UK participation in its preparation was entrusted to Technical Committee RPl/13, Advanced technical 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. @ The British Standards Institution 2012. Published by BSI Standards Limited 2012 ISBN9780580708084 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 31 July 2012. Amendments issued since publication Date Text affected BSISO14627:2012 INTERNATIONAL ISO STANDARD 14627 First edition 2012-07-15 Fine ceramics (advanced ceramics, advancedtechnical ceramics)Test methodforfractureresistanceofsilicon nitride materials for rolling bearing balls at roomtemperature by indentation fracture (IF) method Céramiques techniquesMethode d'essai de résistance a la rupture des materiauxnitrure desiliciumpourbillesde roulementa billes a temperatureambianteparlamethodede ruptureparindentation Reference number ISO14627:2012(E) ISO @ISO 2012 BSISO14627:2012 ISO14627:2012(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2012 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 @ ISO 2012 -All rights reserved BSISO14627:2012 ISO14627:2012(E) Contents Page Foreword iv 1 Scope. 2 Normative references 3 Terms and definitions. 4 Principle. 2 5 Apparatus. 2 5.1 Testing machine. 2 5.2 Indenter. 5.3 Verification by standard reference materials 6 Test specimens 3 6.1 General.. 6.2 Thickness 3 6.3 Surfacefinish 7 Procedure. 3 7.1 Specimenplacement. 3 7.2 Specimen leveling. 3 7.3 Clean the indenter. 7.4 Applicationoftest load 7.5 Acceptability of indentations 7.6 Numberof indentations. 7.7 Measurement of indentation size 5 7.8 Measurementof crack size. 5 8 Calculation 5 9 Test report. 6 Bibliography. @IsO 2012-All rights reserved ili BSISO14627:2012 ISO 14627:2012(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (lSOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISo Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 The main task of technical committees is to prepare International Standards. Draft International Standards 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. ISO14627waspreparedbyTechnical CommitteeISO/TC206,Fineceramics. iv ISO 2012-All rights reserved BSISO14627:2012 INTERNATIONALSTANDARD ISO 14627:2012(E) Fineceramics(advancedceramics,advancedtechnical ceramics) Test method for fracture resistance of silicon nitridematerialsforrollingbearingballsat roomtemperature byind