BS ISO 23145-2:2012 BSl Standards Publication Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of bulk density of ceramic powders Part 2: Untapped density bsi. ..making excellence a habit. BS ISO 23145-2:2012 INTERNATIONAL ISO STANDARD 23145-2 First edition 2012-06-01 Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of bulk density of ceramic powders - Part 2: Untapped density Ceramiques techniques-Determination de la masse volumique des poudrescéramiques- Partie 2:Masse volumique sans tassement Reference number ISO 23145-2:2012(E) @ISO2012 BS ISO 23145-2:2012 ISO23145-2:2012(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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 BSISO23145-2:2012 ISO23145-2:2012(E) Contents Page Foreword 1 Scope 2 Normative references 3 Principle. 4 Apparatus 5 Sampling.. 6 Procedure.. 5 7 Calculation. 5 8 Test report 5 Bibliography @ ISO 2012 -All rights reserved ii BS ISO 23145-2:2012 ISO23145-2:2012(E) Foreword IsO (the International Organization for Standardization) is a worldwidefederation of national standards bodies 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. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards International Standard requires approval by at least 75% of the memberbodies 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. ISO23145-2waspreparedbyTechnicalCommitteeISO/TC206,Fineceramics IsO23145consistsofthefollowingparts,underthegeneral titleFineceramics (advancedceramics,advanced technicalceramics)Determinationofbulkdensityofceramicpowders: —Part1:Tapdensity 一Part2:Untappeddensity iv @ ISO 2012 - All rights reserved BS ISO 23145-2:2012 INTERNATIONALSTANDARD ISO23145-2:2012(E) Fineceramics(advancedceramics,advancedtechnical ceramics)Determinationofbulkdensityofceramicpowders- Part 2: Untapped density 1 Scope ThispartofisO23145specifies thetestmethodtodeterminetheuntappeddensityofgranulatedorungranulated ceramic powders by a constant-volume measuring method. 2 Normative references 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. Iso 565:1990,Test sieves-Metal wire cloth,perforated metal plate and electroformed sheet-Nominal sizes of openings Is0 80000-1:2009, Quantities and unitsPart 1: General IsO/lEc 17025:2005,General requirementsforthe competenceoftesting and calibrationlaboratories 3Principle The mass of a known volume of the powder is determined after allowing it tofall freely into a stationary container, avoiding vibration. The mass of the powder divided by its volume after the test gives its untapped density. 4 Apparatus Funnel (Figure 1), of stainless steel, with an orifice of diameter 2,5 mm and the other with an orifice of diameter 5,o mm. The funnel shall be made of a non-magnetic, corrosion-resistant metallic material such as stainless steel (for example SUs 304) having sufficient wall thickness and hardness to withstand distortion and excessive wear. 4.2 Cylindrical container (Figure 2), of stainless steel, with a volume