BS-ISO-23145-1-2007.pdf
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1、BS ISO 23145-1:2007 ICS 81.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of bulk density of ceramic powders Part 1: Tap density Licensed CopyChinese University of Hong Kong,
2、20/10/2008 09:41, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2008 BSI 2008 ISBN 978 0 580 57795 6 Amendments/corrigenda issued since publication DateComments BS ISO 23145-1:2007 National foreword This B
3、ritish Standard is the UK implementation of ISO 23145-1:2007. The UK participation in its preparation was entrusted to 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
4、 purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 20/10/2008 09:41, Uncontrolled Copy, (c) BSI BS ISO 23145
5、-1:2007 Reference number ISO 23145-1:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 23145-1 First edition 2007-09-15 Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of bulk density of ceramic powders Part 1: Tap density Cramiques techniques Dtermination de la masse volumiqu
6、e des poudres cramiques Partie 1: Masse volumique aprs tassement Licensed CopyChinese University of Hong Kong, 20/10/2008 09:41, Uncontrolled Copy, (c) BSI BS ISO 23145-1:2007 ISO 23145-1:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy,
7、 this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Sec
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9、nsure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise specified, no part of this publica
10、tion 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 ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva
11、20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved Licensed CopyChinese University of Hong Kong, 20/10/2008 09:41, Uncontrolled Copy, (c) BSI BS ISO 23145-1:2007 ISO 23145-1:2007(E) ISO 2007 All rights rese
12、rved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Principle. 1 4 Apparatus 1 5 Sampling 4 6 Procedure 4 7 Calculation. 5 8 Test report . 5 Bibliography. 6 Licensed CopyChinese University of Hong Kong, 20/10/2008 09:41, Uncontrolled Copy, (c) BSI BS ISO 23145-1:2007 ISO 23145
13、-1:2007(E) iv ISO 2007 All rights reserved Foreword 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
14、 body interested in a subject for which a technical committee has been established 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 closely with the International Elect
15、rotechnical Commission (IEC) on 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 Standards adopte
16、d 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
17、 rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 23145-1 was prepared by Technical Committee ISO/TC 206, Fine ceramics. ISO 23145 consists of the following parts, under the general title Fine ceramics (advanced ceramics, advanced technical ceramics) Deter
18、mination of bulk density of ceramic powders: Part 1: Tap density Part 2: Untapped density Licensed CopyChinese University of Hong Kong, 20/10/2008 09:41, Uncontrolled Copy, (c) BSI BS ISO 23145-1:2007 INTERNATIONAL STANDARD ISO 23145-1:2007(E) ISO 2007 All rights reserved 1 Fine ceramics (advanced c
19、eramics, advanced technical ceramics) Determination of bulk density of ceramic powders Part 1: Tap density 1 Scope This part of ISO 23145 specifies a procedure to determine the tap density of granulated or ungranulated ceramic powders by a constant-volume measuring method. 2 Normative references The
20、 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, perforat
21、ed metal plate and electroformed sheet Nominal sizes of openings 3 Principle The mass of a known volume of the powder is determined after allowing it to fall freely into a stationary container, and then tapping it under specified conditions until saturation of packing is reached. The mass of the pow
22、der divided by its volume after the test gives its tap density. 4 Apparatus 4.1 Cylindrical container, of stainless steel (see Figure 1) with a volume of 100 cm3 and a diameter-to- height ratio of approximately 1. 4.2 Sieve, as specified in ISO 565, with an aperture size of 0,71 mm. 4.3 Balance, wit
23、h 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 powders, such as aerosil. 4.4 Ring (see Figure 1), which can be fitted to the top of the cylindrical container to increase its height. 4.5 Tapping apparatus, which permits the tapping of the ceramic
24、 powder in the cylindrical container and its ring. The tapping stroke should be (10 1) mm and the tapping 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. Licensed CopyChinese Univer
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