1、BRITISH STANDARD BS ISO 11873:2005 Hardmetals Determination of sulfur and carbon contents in cobalt metal powders Infrared detection method ICS 77.160 BS ISO 11873:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 April 2005 BSI 14 Apri
2、l 2005 ISBN 0 580 45829 6 National foreword This British Standard reproduces verbatim ISO 11873:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee ISE/65, Sintered metal components, to Subcommittee ISE/65/4, Sampling and t
3、esting method, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under
4、 the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli
5、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; mo
6、nitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, page 1 and 2, an inside back cover and a back cover. The BSI copyright notice displa
7、yed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 11873:2005(E) ISO 2005INTERNATIONAL STANDARD ISO 11873 First edition 2005-02-15 Hardmetals Determination of sulfur and carbon contents in cobalt metal pow
8、ders Infrared detection method Mtaux-durs Dosage du soufre et du carbone dans les carbures au cobalt Mthode par dtection infrarouge BSISO11873:2005IS:37811 O5002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv ro
9、web detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh computfrep reormign tide ehtin.g In wodlnidaot gnhis file, trapise atpecc tiereht nser ehnopsiiblity fo not infriigngn Aebods licensilop gnic.y ehT ISO tneClar Secrteiraat caceptl on siibality i
10、n this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo teh softwacudorp erts sut deo crtaee this PDF file cna f ebi dnuon tlareneG eh Info leratit evo the file; tP ehDc-Frtaeion marapterew setpo erimizde for irpnti.gn Evyre caer neeb sah taken to sneeru that the file is suitlbae
11、 fosu re yb ISO memdob rebeis. In tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 5002 cudorper ehTtino fo teh terms afed dninitisno ctnoiaden in this Intetanrilano Stdradna is repmittei dn teacihgn mlauna,s intsurctino
12、 kooblets, tecinhcal lbupictaions j dnalanruos for stirtcly udecatilano or imlpemtneatioprup nose.s ehT idnoctisno for such rpertcudoira noe: ttah on midoficatinos era meda to teh termed dna sfiinti;sno ttah sucudorper hctino is ton repmittde for idctiiranoero s similar lbupictaions fofef deror sale
13、; dna ttah this Intertanilano Sti dradnas ferenerca des teh scruoe codumnet. With ts ehole xectpeiton snoa de,evob to ontrap reh of this lbupictaino maeb y cudorpertu ro deilizi den f ynaorm yna yb ro measn, lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writig
14、n from eitI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 5002 Allr ithgsr esedevrBSISO118
15、73:2005IS:37811 O5002(E) I SO 5002 All irthgs ersedevr iiiForeword 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 committe
16、es. Each member 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 Inte
17、rnational Electrotechnical 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 S
18、tandards 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 su
19、bject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11873 was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 4, Sampling and testing methods for hardmetals. BSISO11873:2005blank 5002:37811OSISBINTENRATIONAL TSAN
20、DADR IS:37811 O5002(E)I SO 5002 All irthgs ersedevr 1Hardmetals Determination of sulfur and carbon contents in cobalt metal powders Infrared detection method 1 Scope This International Standard specifies the method to be used for the determination of sulfur and carbon in cobalt metal powders in the
21、range of 0,001 % (m/m) to 0,1 % (m/m) by combustion in oxygen and infrared (IR)- detection of carbon dioxide (CO 2 ) and sulfur dioxide (SO 2 ). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition ci
22、ted applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5725 (all parts), Accuracy (trueness and precision) of measurement methods and results 3 Reagents Reagents of the highest purity shall be used. 3.1 Oxygen, purity according to t
23、he specification of the supplier. 3.2 Tungsten granules, or an equivalent shape or form of tungsten as a combustion aid. The particle size shall not be less than 0,2 mm. 3.3 Iron chips, as required for combustion. 4 Procedure 4.1 Test portion Weigh, to the nearest 0,001 g, 0,5 g to 1,5 g of the samp
24、le into a suitable crucible. The mass is dependent on the carbon and sulfur content. There may be a risk of contamination if samples/materials are stored in plastic containers. 4.2 Analysis Add the combustion aid (3.2 and 3.3) and carry out the analysis according to the instructions of the manufactu
25、rer. BSISO11873:2005IS:37811 O5002(E) 2 I SO 5002 All irthgs ersedevr4.3 Calibration Perform at least three blank tests with a crucible and combustion aid (3.2 and 3.3). Proceed if the blank values are within the specification of the instrument manufacturer. Perform at least three calibration tests
26、with reference materials. 5 Expression of the results 5.1 Calculation Calculate the mass fraction of sulfur , w S , or carbon, w C , expressed as a percentage, using the following formulae: S S ()1 0 0 mBP w M = C C ( ) 100 mBP w M = where m Sis the mass, in grams, of sulfur determined in the test p
27、ortion; m Cis the mass, in grams, of carbon determined in the test portion; P is the calibration factor; m is the mass, in grams, of the test portion; B is the average blank value (see 4.3). 5.2 Permissible tolerances The repeatability standard deviations between three independent determinations sha
28、ll not exceed the following values: Lower limit Upper limit C 0,005 0 % (m/m) 50 % 0,200 0 % (m/m) 10 % S 0,005 0 % (m/m) 50 % 0,200 0 % (m/m) 10 % 5.3 Final result Report the arithmetical mean of acceptable determinations of mass fractions rounded to 0,001 %. 6 Test report The test report shall inc
29、lude the following information: a) a reference to this International Standard; b) all details necessary for identification of the test sample; c) the test results obtained; d) all operations not specified by this International Standard, or regarded as optional; e) details of any occurrence which may
30、 have affected the result. BSISO11873:2005blank 5002:37811OSISBBS ISO 11873:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the inte
31、rnational level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services.
32、We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members
33、an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8
34、996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on st
35、andards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Informat
36、ion Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration.
37、 Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsis
38、ts in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any
39、means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.
