ISO INTERNATIONAL STANDARD 20509 First edition 2003-12-01 Fine ceramics (advanced ceramics. advanced technical ceramics) Determination of oxidation resistance of non-oxide monolithic ceramics Céramiquestechniques- Determinationdelarésistancea I'oxydation desceramiquesmonolithiques Reference number ISO 20509:2003(E) ISO @ISO 2003 ISO20509:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and instailed on the computer performing the editing.In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the @ISO2003 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 Casepostale56·CH-1211Geneva20 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 2003 -All rights reserved ISO20509:2003(E) Contents Page 1 Scope 2 Normativereferences 3 Terms and definitions 1 4 Apparatus 2 5 Test pieces 3 6 Test procedure 3 7 Calculations 5 8 Test report 7 Annex A (informative) Useful information ...... 8 9 Bibliography 11 @ ISO2003All rights reserved ili ISO20509:2003(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees.Each member body interested in a subject forwhich a technical committee has been 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. 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 ISO20509waspreparedbyTechnicalCommitteeISO/TC206,Fineceramics. iv ISO2003All rights reserved ISO 20509:2003(E) INTERNATIONALSTANDARD Fineceramics(advancedceramics,advancedtechnical ceramics) Determination of oxidation resistance of non-oxide monolithic ceramics 1 Scope This International Standard describes the method of test for determining the oxidation resistance of non-oxide monolithic ceramics, such as silicon nitride, Sialon1) and silicon carbide at high temperatures. This International Standard is intended to provide an assessment of the mass and dimensional changes of test pieces following characterization, and design data generation purposes. 2Normativereferences 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 any amendments) applies. IsO3611:1978,Micrometercallipersforexternalmeasurement ISO6906:1984,Verniercallipersreadingto0,02mm ISO 7500-1:_2), Metallic materials-Verification of staticuniaxial testingmachines- Part 1: Tension/compressiontestingmachinesVerificationandcalibrationoftheforce-measuringsystem IsO14704:2000,Fineceramics(advancedceramics,advancedtechnicalceramics)—Testmethodforflexural strength ofmonolithic ceramics atroom temperature IEC60584-1:1995,ThermocouplesPart1:Referencetables IEC60584-2:1989,Thermocouples—Part2:Tolerances 3 Terms and defini