EN 24503:1993

Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1978)

Specifies methods for the determination of the presence, type, and distribution of porosity and uncombined carbon in hardmetals, furthermore apparatus, preparation of test pieces, procedure and test report. Figures show the types of apparent porosity and uncombined carbon.

Hartmetalle - Bestimmung des Gehaltes metallischer Elemente durch Röntgenfluoreszenz in fester Lösung (ISO 4503:1978)

Dieses Verfahren ist anwendbar bei - Niob-, Tantal-, Titan-, Vanadium-, Wolfram-und Zirkonium-Carbiden, - Gemischen aus diesen Carbiden und Bindemetalen, - allen Arten vorgesinterter Hartmetalle, die aus diesen Carbiden erzeugt wurden, mit einem Gehalt der Elemente, wie er in Tabelle 1 wiedergegeben wird.

Métaux-durs - Dosage des éléments métalliques par fluorescence de rayons X - Méthode par fusion (ISO 4503:1978)

La présente Norme internationale spécifie une méthode de fluorescence X par fusion pour le dosage des éléments suivants : cobalt, chrome, fer, manganèse, molybdène, nickel, niobium, tantale, titane, tungstène, vanadium et zirconium dans les carbures et métaux-durs.
Cette méthode s'applique aux
carbures de niobium, tantale, titane, vanadium, tungstène et zirconium,
mélanges de ces carbures et des métaux liants non lubrifiés,
métaux-durs de toutes nuances, préfrittés ou frittés, produits de ces carbures, ayant les teneurs indiquées au tableau 1.

Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1978)

General Information

• Status: Published
• Publication Date: 06-Apr-1993
• Withdrawal Date: 30-Oct-1993
• ICS: 77.160 - Powder metallurgy
• Technical Committee: CEN/SS M11 - Powder metallurgy
• Drafting Committee: CEN/SS M11 - Powder metallurgy
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 13-Oct-1999
• Completion Date: 13-Oct-1999
• Ref Project: SIST EN 24503:2000 - Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1978)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1978)Hartmetalle - Bestimmung des Gehaltes metallischer Elemente durch Röntgenfluoreszenz in fester Lösung (ISO 4503:1978)Métaux-durs - Dosage des éléments métalliques par fluorescence de rayons X - Méthode par fusion (ISO 4503:1978)Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method (ISO 4503:1978)77.160Metalurgija prahovPowder metallurgyICS:Ta slovenski standard je istoveten z:EN 24503:1993SIST EN 24503:2000en01-december-2000SIST EN 24503:2000SLOVENSKI
STANDARD
INTERNATIONAL STANDA 4503 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MElKfiYHAPOfiHAR OPI-AHM3AL&lR fl0 CTAH~APTM3AlJVlVl.ORGANISATION INTERNATIONALE DE NORMALISATION Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method Mtaux -durs - Dosage des 6ltSmen ts mktalliques par fluorescence de rayons X - Mtbode par fusion First edition - 1978-06-15 UDC 621.762.661.665.2 : 546.3 : 543.422.8 Ref. No. ISO 4503-1978 (E) Descriptors : hardmetals, carbides, Chemical analysis, determination of content, metals, Cobalt, chromium, iron, manganese, molybdenum, nickel, niobium, tantalum, titanium, tungsten, vanadium, zirconium, spectrophotometric analysis, X-ray fluorescence spectrometry Price based on 3 pages SIST EN 24503:2000

FOREWORD ISO (the International Organization for Standardization) is a worldwide federation of national Standards institutes (ISO member bodies). The work of developing International Standards is carried out through ISO technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-governmental, in Iiaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 4503 was developed by Technical Committee ISO/TC 119, Powder metallurgical materials and products, and was circulated to the member bodies in June 1977. lt has been approved by the member bodies of the following countries : Australia Ireland Austria I taly Bulgaria Japan Canada Korea, Rep. of Czechoslovakia Mexico Egypt, Arab Rep. of Poland France Romania Germany South Africa, Rep. of Spain Sweden Turkey United Kingdom U.S.A. U.S.S. R. Yugoslavia No member body expressed disapproval of the document. Cc> International Organkation for Standardkation, 1978 l Printed in Switzerland SIST EN 24503:2000

INTERNATIONAL STANDARD ISO 45034978 (E) Hardmetals - Determination of contents of metallic elements by X-ray fluorescence - Fusion method 1 SCOPE This International Standard specifies an X-ray fluorescence fusion method for the determination of Cobalt, chromium, iron, manganese, molybdenum, nickel, niobium, tantalum, titanium, tungsten, vanadium and zirconium contents of carbides and hardmetals. 2 FIELD OF APPLICATION The method is applicable to - carbides of niobium, tantalum, titanium, vanadium, tungsten and zirconium, - mixtures of these carbides and binder metals, - all grades of presintered or sintered hardmetals, produced from these carbides, with the element contents shown in table 1. TABLE 1 Element Content, % (m/m) min. max. Co 0,05 50 Cr 0,05 280 Fe 0,05 zo Mn 0,05 z5 Mo 0,05 58 Nb 0,05 15 Ni 0,05 5,o Ta 0,lO 30 Ti 0,3 30 V 0,15 4,o w 45 95 Zr 0,05 2,o 3 PRINCIPLE Measurement of the intensity of the characteristic X-ray spectrum of the elements being determined. To eliminate the effects of particle size and inter-element effects, the test Portion is dissolved in a suitable mixture of acids and converted to sulphates, or is directly oxidized. Either the sulphates or the oxides are then fused with a mixture of sodium tetraborate and a barium compound. 4 INTERFERING ELEMENTS The effect of interfering elements, such as line interference of titanium and tungsten on vanadium, shall be taken into account. 5 REAGENTS During the analysis, use only reagents of recognized analytical grade, and only distilled water or water of equivalent purity. 5.1 Barium Peroxide, anhydrous, or barium carbonate, anhydrous. 5.2 Sodium tetraborate, anhydrous. To ensure freedom from water, heat the sodium tetraborate to approximately 400 “C. 5.3 Hydrofluoric acid, p 1,12 g/mI. 5.4 Nitrit acid, p 1,24 g/ml (nitric acid, p 1,42 g/mI, diluted 1 i- 1). 5.5 Sulphuric acid,p 1,54 g/ml (sulphuric acid, p 1,84 g/ml, diluted 1 -i- 1). 6 APPARATUS Ordinary laboratory apparatus and 6.1 X-ray spectrometer. 6.2 Furnaces for Oxidation of the test Portion at 700 to 900 “C and for preparation of the borate melt at approxi- mately 1 100 “C. 6.3 Platinum dishes, 50 to 100 ml. NOTE - Dishes of 95 % Pt + 5 % Au are to be preferred. 6.4 Plate, with polished surface, of platinum alloy, for exampl
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