1、BSISO23145-1:2007ICS81.060.30NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBRITISHSTANDARDFineceramics(advancedceramics,advancedtechnicalceramics)DeterminationofbulkdensityofceramicpowdersPart1:Tapdensity(ISO 23145-1:2007)BS EN ISO 23145-1:2016BS EN ISO 23145-1:2016ISBN 978 0 580 91170
2、 5Amendments/corrigenda issued since publicationDate Comments31 May 2016 This corrigendum renumbers BS ISO 23145-1:2007 as BS EN ISO 23145-1:2016This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2008 The British Standards Institution 20
3、16. Published by BSI Standards Limited 2016National forewordThis British Standard is the UK implementation of EN ISO 23145-1:2016. It is identical to ISO 23145-1:2007. It supersedes BS EN 725-8:2006 and BS ISO 23145-1:2007, which are withdrawn.The UK participation in its preparation was entrusted to
4、 Technical Committee RPI/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.Compli
5、ance with a British Standard cannot confer immunity from legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 23145-1 April 2016 ICS 81.060.30 Supersedes EN 725-8:2006English Version Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of bulk density
6、of ceramic powders - Part 1: Tap density (ISO 23145-1:2007) Cramiques techniques - Dtermination de la masse volumique en vrac des poudres cramiques - Partie 1: Masse volumique aprs tassement (ISO 23145-1:2007)Hochleistungskeramik - Bestimmung der Dichte von keramischen Pulvern - Teil 1: Klopfdichte
7、(ISO 23145-1:2007) This European Standard was approved by CEN on 18 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bi
8、bliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the resp
9、onsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Re
10、public of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORM
11、ALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 23145-1:2016 EEN ISO 23145-1:2016 (E) 3 European foreword The text o
12、f ISO 23145-1:2007 has been prepared by Technical Committee ISO/TC 206 “Fine ceramics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 23145-1:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by DIN. T
13、his European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of
14、 the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 725-8:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the f
15、ollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland
16、s, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 23145-1:2007 has been approved by CEN as EN ISO 23145-1:2016 without any modification. BS EN ISO 23145-1:2016EN ISO 23145-1:2016 (E)BS ISO 23145-1:2
17、007ISO 23145-1:2007(E) ISO 2007 All rights reserved iiiContents PageForeword iv1Scope . 12Normative references. 13Principle. 14Apparatus 15Sampling 46Procedure 47Calculation.58Test report.5Bibliography. 6BS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007ISO 23145-1:2007(E)iv ISO 2007 All r
18、ights reservedForeword ISO (the International Organization for Standardization) 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
19、 for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closelywith the International Electrotechnical Commission (IEC) on
20、 all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the technical committees are
21、 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 re
22、sponsible for identifying any or all such patent rights. ISO 23145-1 was prepared by Technical Committee ISO/TC 206, Fine ceramics. ISO23145 consists of the following parts, under the general title Fine ceramics (advanced ceramics,advanced technical ceramics) Determination of bulk density of ceramic
23、 powders: Part 1: Tap density Part 2: Untapped densityBS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007INTERNATIONAL STANDARD ISO 23145-1:2007(E) ISO 2007 All rights reserved 1Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of bulk densityof ceramic powders Pa
24、rt 1: Tap density1 Scope This part of ISO 23145 specifies a procedure to determine the tap densityof granulated or ungranulated ceramic powders by a constant-volume measuring method. 2 NormativereferencesThe following referenced documents are indispensable for the application of this document. For d
25、atedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.ISO 565:1990, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings3 Principle The mass of a known
26、volume of the powder is determined after allowing it to fall freelyinto a stationarycontainer, and then tapping it under specified conditions until saturation of packing is reached. The mass of the powder divided by its volume after the test gives its tap density.4 Apparatus 4.1 Cylindrical containe
27、r, of stainless steel (see Figure 1) with a volume of 100 cm3and a diameter-to-height ratio of approximately1. 4.2 Sieve, as specified in ISO565, with an aperture size of 0,71 mm. 4.3 Balance, with a precision of 0,1 g or 0,01 g. A balance with a precision of 0,01 g should be used for very fluffy po
28、wders, suchas aerosil. 4.4 Ring (see Figure 1), whichcan be fitted to the top of the cylindrical container to increase its height. 4.5 Tapping apparatus, which permits the tapping of the ceramic powder in the cylindrical container and its ring. The tapping stroke should be (10 1) mm and the tapping
29、frequency should be less than 180 taps/min.An example of the tapping apparatus is shown in Figure 2. The cylindrical container shall not be tilted when it is tapped. BS EN ISO 23145-1:2016BS ISO 23145-1:2007ISO 23145-1:2007(E)2 ISO 2007 All rights reservedKey1 ring, height 50 mm2 cylindrical contain
30、er, diameter 50 mm, height 51 mmFigure 1 Example of cylindrical container and ringBS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007ISO 23145-1:2007(E) ISO 2007 All rights reserved 3Key1 ring 2 cylindricalcontainer 3 tapping stroke, (10 1)mm 4 piston 5 guidebearing 6 (10 1)mm 7 cam Figure
31、2 Example of tapping apparatusBS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007ISO 23145-1:2007(E)4 ISO 2007 All rights reserved5 Sampling 5.1 In general, the powder should be tested in the as-received condition. In certain instances, the powdermay be dried. If the powder is required to b
32、e dried, it should be dried at (110 10) C for at least 1h and cooled to room temperature in a desiccator. If the powder containsvolatile substances, it shall not be dried. NOTE If the powder is required to be dried, it is desirable that the powder be dried until below the weight loss rate of0,1 %/30
33、 min. 5.2 Should there be any treatment (e.g. drying) of the powder before measurement, it shall be recorded inthe test report. 5.3 The test shall be carried out on three test portions.6 Procedure 6.1 Weigh the empty cylindrical container. 6.2 Place the ring on the top of the cylindrical container.
34、6.3 Pour the powder, which passed through the sieve, into the cylindrical container with the ring. 6.4 Place the cylindrical container with the ring, filled with the powder, on the tapping apparatus and tap it1 000 times. During tapping, pour the powder into the cylindrical container with the ring,
35、to keep the surplus powder (20 to 30) mm higher than the height of the cylindrical container. 6.5 Remove the cylindrical container with the ring from the tapping apparatus, without anyvibration.6.6 Carefully remove the ring from the cylindrical container. 6.7 Remove the cone of surplus powder by gen
36、tly drawing a straight-edge (see Figure 3) across the top rimof the cylindrical container.Dimensions in millimetres Figure 3 Example of astraight-edge6.8 Weigh the cylindrical container and its contents. 6.9 Place the ring on the top of the cylindrical container and pour the powder into the cylindri
37、cal containerwith the ring. Tap the container filledwith the powder 100 times using the tapping apparatus. 6.10 Remove the ring from the cylindrical container and remove the coneof surplus powder by gentlydrawing a straight-edge across the top rim of the cylindrical container. Weigh the cylindrical
38、container and its contents.BS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007ISO 23145-1:2007(E) ISO 2007 All rights reserved 56.11 Calculate the deviation between the mass of powderweighed in 6.8 and that in 6.10. If the deviation is more than 0,3 %, repeat steps 6.9 to 6.11 until it beco
39、mes less than 0,3 %. 6.12 Repeat steps 6.1 to 6.11 with two additional portions, and average the results.7 Calculation Calculate the tap density from the mass of the powder which is weighed in 6.10 divided by the volume of thecylindrical container. 10tmmpV=where tp is the tap density, in gramsper cu
40、bic centimetre, of the ceramic powder;0m is the mass, in grams, of the empty cylindrical container;1m is the mass, in grams, of the cylindrical container full of the powder after tapping; V is the volume, in cubic centimetres, of the cylindrical container (100 cm3). 8 TestreportThe test report shall
41、 include the following information:a) the name of the testing establishment; b) date of the test, report identification and number, operator, signatory;c) a reference to this part of ISO 23145; d) a description of the powder (material type, manufacturer, batchor code number);e) anypretreatment of th
42、e powder, such as drying; f) the result obtained: tap density (kg/m3or g/cm3); g) anyunusual features noted during the determination; h) comments about the test or test results.BS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007ISO 23145-1:2007(E)6 ISO 2007 All rights reservedBibliography1
43、ISO 690-2, Information and documentation Bibliographic references Part2: Electronicdocuments or parts thereof2 ISO 3953, Metallic powders Determination of tap density3 EN 725-8:2006, Advanced technical ceramics M ethods oftest for ceramic powders P art8:Determination of tapped bulk density4 JIS R 16
44、28:1997, Test methods forbulk density of fine ceramic powder5 JIS R 1639-2:1999, Test methods of properties of fine ceramic granules Part 2: Bulk density6 KS L 1621, Fine ceramics T est methods for bulk density of fine ceramic powder7 ASTM B527-93, StandardTestMethod for Determination of Tap Density
45、 ofMetallic Powders and Compounds8 ASTM D3347-94, Standard Test Method for Flow Rate and Tap Density of Electrical Grade Magnesium Oxide for Use in Sheathed Heating ElementsBS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS EN ISO 23145-1:2016BS ISO 23145-1:2007ISO 23145-1:2007(E)ICS 81.060.30 Price based
46、on 6 pages ISO 2007 All rights reserved BS EN ISO 23145-1:2016ISO 23145-1:2007(E)BS ISO 23145-1:2007This page has been intentionally left blankBS EN ISO 23145-1:2016BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services
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