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STANDARD

Current

ÖNORM EN ISO 21821

Issue date: 2023 02 15

Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of densification properties of ceramic powders on natural sintering (ISO 21821:2019)

This document specifies the test method to determine the extent to which ceramic powder compacts made of granulated or ungranulated ceramic powders are densified, when they are sintered at a high temperature without the application of any external pressure or external densification force. The test method is applicable to pure oxides, mixtures of oxides and solid solutions, and is also applicable to non-oxides (e.g. carbides, nitrides) that can be sintered under vacuum or constant gas pressure (1 bar or less) to prevent oxidation or decomposition. The test method is not applicable to ceramics that can only be sintered using pressure-assisted sintering techniques such as hot pressing (HP), hot isostatic pressing (HIP), gas pressure sintering (GPS) or spark plasma sintering (SPS). Inorganic sintering additives can be used where their presence is reported.

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General information on ÖNORM EN ISO 21821

Format

Digital | 17 Pages

Language

German | English | Download GER/ENG

Publisher

Austrian Standards International

Committee 028 Bearings / Tribology / Gears

Timeline

An overview of the development of ÖNORM EN ISO 21821 from 1993 til today.

• ÖNORM EN ISO 21821

  2023 02 15 Standard ÖNORM EN ISO 21821, Edition: 2023 02 15

  Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of densification prop...
• ÖNORM EN 725-11

  2006 10 01 Standard ÖNORM EN 725-11, Edition: 2006 10 01

  Advanced technical ceramics - Methods of test for ceramic powders - Part 11: Determination of densif...
• ÖNORM ENV 725-11

  2001 06 01 Vornorm Entwurf ÖNORM ENV 725-11, Edition: 2001 06 01

  Advanced technical ceramics - Methods of test for ceramic powders - Part 11: Determination of the de...
• ÖNORM ENV 725-11

  1997 12 01 Vornorm Entwurf ÖNORM ENV 725-11, Edition: 1997 12 01

  Advanced technical ceramics - Methods of test for ceramic powders - Part 11: Determination of the de...
• ÖNORM ENV 725-11

  1993 11 01 Vornorm ÖNORM ENV 725-11, Edition: 1993 11 01

  Advanced technical ceramics - Methods of test for ceramic powders - Part 11: Determination of the de...

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Frequently Asked Questions about ÖNORM EN ISO 21821

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Normative References

Here you will find an extract of the normative references. Please refer to the document itself for the full list.

Dokumentnummer	Titel	Ausgabedatum	Art	Link
Dokumentnummer ISO 17172:2014	Titel Fine ceramics (advanced ceramics, advanced technical ceramics) — Determination of compaction properties of ceramic powders	Ausgabedatum 2014 01 22	Art Standard	Zur Produktseite
Dokumentnummer ISO 3611:2010	Titel Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics	Ausgabedatum 2010 10 19	Art Standard	Zur Produktseite
Dokumentnummer ISO/IEC 17025:2017	Titel General requirements for the competence of testing and calibration laboratories (Corrected version 2017-11)	Ausgabedatum 2017 11 29	Art Standard	Zur Produktseite

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