ISO 3169:2023 PDF

Fine ceramics (advanced ceramics, advanced technical ceramics) — Methods for chemical analysis of impurities in aluminium oxide powders using inductively coupled plasma-optical emission spectrometry

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Title (English):

ISO 3169:2023

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 12
Publication date:: January 16, 2023
Edition:: ISO IS 3169 edition 1 version 1
ICS:: 81.060.30

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Description (English):

This document specifies methods for the chemical analysis of impurities present in aluminium oxide powders used as a raw material for fine ceramics. Aluminium oxide powders are decomposed by acid pressure decomposition, acid decomposition or alkali fusion. The calcium, chromium, copper, iron, magnesium, manganese, potassium, silicon, sodium, titanium, zinc and zirconium contents in the test solution are determined by an inductively coupled plasma-optical emission spectrometer (ICP-OES).

Technical details

Technical committee: ISO/TC 206 - Fine ceramics
SKU: ISO 3169:2023

Abstract

Overview

ISO 3169:2023 specifies standardized laboratory methods for the chemical analysis of impurities in aluminium oxide (alumina) powders used as raw material for fine ceramics (advanced/technical ceramics). The standard defines sample preparation, decomposition techniques and measurement by inductively coupled plasma–optical emission spectrometry (ICP‑OES) to quantify trace elements that can affect ceramic performance.

Key topics and requirements

Scope of analysis: Determination of Ca, Cr, Cu, Fe, Mg, Mn, K, Si, Na, Ti, Zn and Zr in alumina powder test solutions.
Analytical range: Each element covered in the range 0.0005% to 0.5% (mass fraction).
Sample preparation: Sampling per ISO 8656‑1; drying example - 10 g spread in a weighing bottle heated 2 h at 110 °C ± 5 °C and cooled in a desiccator; weighing to 0.01 mg.
Decomposition methods: Three defined routes to dissolve alumina prior to ICP‑OES:
- Acid pressure decomposition (example: 0.50 g sample, sulfuric acid solution (1+3), pressure vessel heated 230 °C ± 5 °C for 16 h).
- Acid decomposition (specified reagents and procedure).
- Alkali fusion (specified reagents and procedure).
ICP‑OES determination: Use of elemental standard and mixed standards; internal standard recommended (lanthanum La 1 mg/ml shown; Sc or Y may be used after validation); instrument setup, calibration curve construction and calculation procedures are specified.
Quality control & reporting:
- Duplicate sample preparation and analysis, blank tests (double repetition recommended).
- Tolerance rules for repeated results and procedures for additional analyses if tolerances exceeded.
- Results expressed to four decimal places in % dryness (mass fraction).
Annex: Includes interlaboratory guidance for impurity analysis.

Applications and users

ISO 3169:2023 is intended for:

Quality control and incoming‑raw‑material inspection by ceramic manufacturers and alumina suppliers.
Analytical and R&D laboratories performing trace impurity quantification in ceramics feedstocks.
Materials scientists and process engineers concerned with impurity effects on sintering, mechanical properties, optical clarity, or electrical behavior of advanced ceramics.
Accreditation bodies and contract testing labs seeking standardized ICP‑OES methods for alumina.

Keywords: ISO 3169:2023, fine ceramics, aluminium oxide powders, alumina impurity analysis, ICP‑OES, acid decomposition, alkali fusion, chemical analysis standard.

Related standards

ISO 3696 - Water for analytical laboratory use
ISO 6353‑2 - Reagents for chemical analysis (specifications)
ISO 8656‑1 - Sampling of raw materials and unshaped products (refractory products)

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Scope of analysis: Determination of Ca, Cr, Cu, Fe, Mg, Mn, K, Si, Na, Ti, Zn and Zr in alumina powder test solutions.
Analytical range: Each element covered in the range 0.0005% to 0.5% (mass fraction).
Sample preparation: Sampling per ISO 8656‑1; drying example - 10 g spread in a weighing bottle heated 2 h at 110 °C ± 5 °C and cooled in a desiccator; weighing to 0.01 mg.
Decomposition methods: Three defined routes to dissolve alumina prior to ICP‑OES:
- Acid pressure decomposition (example: 0.50 g sample, sulfuric acid solution (1+3), pressure vessel heated 230 °C ± 5 °C for 16 h).
- Acid decomposition (specified reagents and procedure).
- Alkali fusion (specified reagents and procedure).
ICP‑OES determination: Use of elemental standard and mixed standards; internal standard recommended (lanthanum La 1 mg/ml shown; Sc or Y may be used after validation); instrument setup, calibration curve construction and calculation procedures are specified.
Quality control & reporting:
- Duplicate sample preparation and analysis, blank tests (double repetition recommended).
- Tolerance rules for repeated results and procedures for additional analyses if tolerances exceeded.
- Results expressed to four decimal places in % dryness (mass fraction).
Annex: Includes interlaboratory guidance for impurity analysis.

Applications and users

ISO 3169:2023 is intended for:

Quality control and incoming‑raw‑material inspection by ceramic manufacturers and alumina suppliers.
Analytical and R&D laboratories performing trace impurity quantification in ceramics feedstocks.
Materials scientists and process engineers concerned with impurity effects on sintering, mechanical properties, optical clarity, or electrical behavior of advanced ceramics.
Accreditation bodies and contract testing labs seeking standardized ICP‑OES methods for alumina.

Keywords: ISO 3169:2023, fine ceramics, aluminium oxide powders, alumina impurity analysis, ICP‑OES, acid decomposition, alkali fusion, chemical analysis standard.

Related standards

ISO 3696 - Water for analytical laboratory use
ISO 6353‑2 - Reagents for chemical analysis (specifications)
ISO 8656‑1 - Sampling of raw materials and unshaped products (refractory products)

ISO 3169:2023 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling scheme

Water for analytical laboratory use. Specification and test methods.

Reagents for chemical analysis -- Part 2: Specifications -- First series