BS ISO 21813:2019 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics) — Methods for chemical analysis of high purity barium titanate powders

BS ISO 21813:2019 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics) — Methods for chemical analysis of high purity barium titanate powders 1 Scope This document specifies methods for the chemical analysis of fine high purity barium titanate powders used as the raw material for fine ceramics. This document stipulates the determination methods of the barium, titanium, aluminium, cadmium, calcium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, sodium, strontium, vanadium, zirconium, carbon, oxygen and nitrogen contents in high purity barium titanate powders. The barium and titanium contents, the major elements, are determined by using an acid decomposition-gravimetric method or an acid decomposition-inductively coupled plasma- optical emission spectrometry (ICP-OES) method. The aluminium, cadmium, calcium, chromium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, strontium, vanadium and zirconium contents are simultaneously determined via an acid digestion-ICP-OES method. The nitrogen content is determined by using an inert gas fusion-thermal conductivity method, while that of oxygen is determined via an inert gas fusion-IR absorption spectrometry method. Finally, the carbon content is determined using a combustion-IR absorption spectrometry method or a combustion-conductometry method. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 3696, Water for analytical laboratory use — Specification and test methods ISO 6353-1, Reagents for chemical analysis — Part 1: General test methods ISO 6353-2, Reagents for chemical analysis — Part 2: Specifications — First series ISO 6353-3, Reagents for chemical analysis — Part 3: Specifications — Second series ISO 8656-1, Refractory products — Sampling of raw materials and unshaped products — Part 1:Sampling scheme 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 Analytes and ranges a) Barium (Ba), range of 40 % to 60 % (mass fraction). b) Titanium (Ti), range of 10 % to 30 % (mass fraction). c) Aluminium (Al), range of 0,001 % to 0,03 % (mass fraction). d) Cadmium (Cd), range of 0,001 % to 0,03 % (mass fraction). e) Calcium (Ca), range of 0,001...