SIST EN 725-4:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Advanced technical ceramics - Methods of test for ceramic powders - Part 4: Determination of oxygen content in aluminium nitride by XRF analysis;5)Céramiques techniques avancées - Méthodes d'essai pour poudres céramiques - Partie 4: Détermination de la teneur en oxygene du nitrure d'aluminium par spectrométrie de fluorescence XRFHochleistungskeramik - Prüfverfahren für keramische Pulver - Teil 4: Bestimmung der Sauerstoffgehaltes in Aluminiumnitrid-Pulvern mittels Röntgenfluoreszensanalyse (RFA)Ta slovenski standard je istoveten z:EN 725-4:2006SIST EN 725-4:2007en81.060.30Sodobna keramikaAdvanced ceramicsICS:SIST ENV 725-4:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 725-4:200701-januar-2007







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 725-4April 2006ICS 81.060.30Supersedes ENV 725-4:1994
English VersionAdvanced technical ceramics - Methods of test for ceramicpowders - Part 4: Determination of oxygen content in aluminiumnitride by XRF analysisCéramiques techniques avancées - Méthodes d'essai pourpoudres céramiques - Partie 4: Détermination de la teneuren oxygène du nitrure d'aluminium par spectrométrie defluorescence XRFHochleistungskeramik - Prüfverfahren für keramischePulver - Teil 4: Bestimmung der Sauerstoffgehaltes inAluminiumnitrid-Pulvern mittels Röntgenfluoreszensanalyse(RFA)This European Standard was approved by CEN on 13 March 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 725-4:2006: E



EN 725-4:2006 (E) 2 Contents Page Foreword.3 1 Scope.5 2 Normative references.5 3 Principle.5 4 Apparatus and experimental conditions.5 4.1 Apparatus.5 4.2 Experimental conditions.5 5 Sample preparation.6 5.1 Granulometry.6 5.2 Test piece preparation.6 6 Calibration.6 6.1 Preparation of standards.6 6.2 Calibration curves.6 6.3 Recalibration.7 6.4 Sensitivity — limit of detection.7 7 Repeatability.7 8 Test report.8 Bibliography.10



EN 725-4:2006 (E) 3 Foreword This European Standard (EN 725-4:2006) has been prepared by Technical Committee CEN/TC 184 “Advanced technical ceramics”, the secretariat of which is held by BSI. This 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 2006, and conflicting national standards shall be withdrawn at the latest by October 2006. This European Standard supersedes ENV 725-4:1994. The main changes in the new edition are: - revision of the foreword to reflect changes in the EN 725 series; - changes to the normative references; - modification of the test piece preparation requirements; - modification of the test report requirements; - addition of a bibliographical reference. EN 725 Advanced technical ceramics — Methods of test for ceramic powders was prepared in Parts as follows: Part 1: Determination of impurities in alumina Part 2: Determination of impurities in barium titanate Part 3: Determination of oxygen content of non-oxides by thermal extraction with a carrier gas Part 4: Determination of oxygen content in aluminium nitride by XRF analysis Part 5: Determination of particle size distribution Part 6: Determination of specific surface area [withdrawn] Part 7: Determination of absolute density [withdrawn] Part 8: Determination of tapped bulk density Part 9: Determination of un-tapped bulk density Part 10: Determination of compaction properties Part 11: Determination of densification on natural sintering Part 12: Chemical analysis of zirconia Parts 6 and 7 of the series were superseded in 2005 by EN ISO 18757 and EN ISO 18753 respectively. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,



EN 725-4:2006 (E) 4 Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.



EN 725-4:2006 (E) 5 1 Scope This European Standard specifies a method for the determination of oxygen contents of 2 % or less in aluminium nitride powder, by XRF analy
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