BS EN 623-3-1993 Advanced technical ceramics — Monolithic ceramics — General and textural.pdf
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1、BRITISH STANDARD BS EN 623-2:1993 Advanced technical ceramics Monolithic ceramics General and textural properties Part 2: Determination of density and porosity The European Standard EN 623-2:1993 has the status of a British Standard UDC 666.5/.6:620-1:531.75 BS EN 623-2:1993 This British Standard, h
2、aving been prepared under the direction of the Refractory Products Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 November 1993 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference RPM/13 D
3、raft for comment 92/36001 DC ISBN 0 580 21772 8 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitu
4、t BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandN
5、ational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certific
6、acin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 623-2:1993 BSI 10-1999i Contents Page Cooperating organizationsInside front cover National forew
7、ordii Foreword2 Text of EN 623-23 National annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover BS EN 623-2:1993 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the Refractory
8、Products Standards Policy Committee and is the English language version of EN 623-2 Advanced technical ceramics Monolithic ceramics General and textural properties Part 2: Determination of density and porosity published by the European Committee for Standardization (CEN). It supersedes BS 7134-1.2:1
9、989 which is withdrawn. EN 623-2 was produced as a result of international discussions in which the UK took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance
10、with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date
11、) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. ? EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 623-2 September 1993 UDC 666.5/.6:620.1:531.75 Descriptors: Ceramics, characteristics, tests, determination, bulk density, poros
12、ity, quality English version Advanced technical ceramics Monolithic ceramics General and textural properties Part 2: Determination of density and porosity Cramiques techniques avances Cramiques monolithiques Proprits gnrales et structurales Partie 2: Dtermination de la masse volumique et de la poros
13、it Hochleistungskeramik Monolithische Keramik Allgemeine und strukturelle Eigenschaften Teil 2: Bestimmung von Dichte und Porositt This European Standard was approved by CEN on 1993-08-30. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
14、ving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official ver
15、sions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium,
16、 Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart
17、 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 623-2:1993 E ? EN 623-2:1993 BSI 10-1999 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 184 “ Advanced technical ceramics” the secretariat of which is held by BSI. EN 623 Advanced technical cer
18、amics Monolithic ceramics General and textural properties consists of four Parts: Part 1: Determination of the presence of defects by dye penetration tests; Part 2: Determination of density and porosity; Part 3: Determination of grain size1); Part 4: Determination of surface roughness1). The Europea
19、n Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 1994, and conflicting national standards shall be withdrawn at the latest by March 1994. In accordance with the CEN/CENELEC Internal Regulations, the foll
20、owing countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Defin
21、itions3 4Statement of accuracy and errors3 5The evacuation method (Method 1)4 6Method by measurement of dimensions and mass (geometric bulk density) (Method 2)6 7Test report7 Table 1 Accuracy and errors of density and porosity measurement4 Table 2 Density of distilled water as a function of temperat
22、ure between 15 C and 30 C5 1)Parts 3 and 4 of this European Standard will be published as ENV. ? EN 623-2:1993 BSI 10-19993 1 Scope This Part of EN 623 describes methods for determination of the bulk density, apparent solid density, and apparent porosity of advanced technical ceramics. Two methods a
23、re described and are designated as Methods 1 and 2, as follows. Method 1. Determination of bulk density, apparent solid density and apparent porosity by the evacuation method. NOTE 1This method is not suitable for the determination of apparent porosity of less than 1 %. A method for determining the
24、presence of defects and surface porosity in this type of material is given in EN 623-1. NOTE 2The method is also not suitable for materials which are known to have an average pore size of greater than 200 m. Method 2. Determination of bulk density only, by measurement of dimensions and mass. NOTE 3N
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