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EN 12923-1:2006

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Advanced technical ceramics - Monolithic ceramics - Part 1: General practice for undertaking corrosion tests

Withdrawn date

30-06-2007

Published date

20-12-2006

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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Significance and use
5 Assessment of corrosive attack
   5.1 Introduction
   5.2 Method A: Depth of penetration
   5.3 Method B: Mass change
   5.4 Method C: Change of test piece size
   5.5 Method D: Strength change
   5.6 Method E: Change in surface roughness
   5.7 Method F: Change in hardness
6 Apparatus for laboratory corrosion testing
   6.1 Container for corroding medium
   6.2 Heating device
   6.3 Thermocouple
   6.4 Chemical balance
   6.5 Oven
   6.6 Dye penetrant equipment
   6.7 Travelling microscope or optical microscope
   6.8 Micrometer
   6.9 Vernier callipers
   6.10 Surface roughness measuring equipment
   6.11 Flexural strength test facility
   6.12 Hardness measurement equipment
7 Test pieces
   7.1 General requirements
   7.2 Specific requirements
   7.3 Number of test pieces
8 Test procedure
   8.1 Safety considerations
   8.2 Corrosion test
   8.3 Procedure
9 Expression of results
   9.1 Calculation of mass change (Method B)
   9.2 Change of component or test piece size (Method C)
   9.3 Calculation of flexural strength (Method D)
10 Test report
Annex A (informative) Appropriate container and specimen holder
        materials for corrosion testing
      A.1 Mineral acids, excluding hydrofluoric acid
      A.2 Hydrofluoric acid (HF)
      A.3 Aqueous-based alkaline solutions
      A.4 Molten metal alloys
      A.5 Molten slags
      A.6 Corrosive gases
Bibliography

This part of EN 12923 specifies guidelines to be employed when undertaking corrosion tests on advanced technical ceramics. The mechanisms of chemical attack on advanced ceramics are widely varied and depend on the chemical and phase composition and the phase morphology of the material, as well as the corrosive conditions imposed. For any particular engineering application it is usually necessary to model expected conditions of use in order to obtain quantitative data on the ability to withstand the proposed end-use conditions.This European Standard is not restricted to specific material types, nor does it prescribe particular test conditions or a test duration. The actual testing requirements might be very specific, for example, in order to investigate the suitability of a range of materials for a given application in which certain specified conditions occur. This European Standard provides recommended methods for undertaking the assessment of the effect of corrosion and provides guidance on practical issues related to undertaking the tests.

Committee
CEN/TC 184
DevelopmentNote
Supersedes ENV 12923-1. (02/2007)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Withdrawn
Supersedes

CEN/TR 13233 : 2007 COR 2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS
UNI EN 14232 : 2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
09/30185903 DC : 0 BS EN 14232 - ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
PREN 14232 : DRAFT 2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
PD CEN/TR 13233:2007 Advanced technical ceramics. Notations and symbols
EN 14232:2009 Advanced technical ceramics - Terms, definitions and abbreviations
BS EN 14232:2009 Advanced technical ceramics. Terms, definitions and abbreviations
DD CEN/TR 13233 : 2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS
I.S. EN 14232:2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
S.R. CEN TR 13233:2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
EN 843-1:2006 Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature - Part 1: Determination of flexural strength
EN 60584-2:1993 Thermocouples - Part 2: Tolerances
EN 623-4:2004 Advanced technical ceramics - Monolithic ceramics - General and textural properties - Part 4: Determination of surface roughness
ENV 1006 : DRAFT 2003 ADVANCED TECHNICAL CERAMICS - MONOLITHIC CERAMICS - GUIDANCE ON THE SELECTION OF TEST PIECES FOR THE EVALUATION OF PROPERTIES
EN 623-1:2006 Advanced technical ceramics - Monolithic ceramics - General and textural properties - Part 1: Determination of the presence of defects by dye penetration
ISO 6906:1984 Vernier callipers reading to 0,02 mm
EN 843-4:2005 Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature - Part 4: Vickers, Knoop and Rockwell superficial hardness
EN 60584-1:2013 Thermocouples - Part 1: EMF specifications and tolerances
ISO 3611:2010 Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics
ENV 12923-2:2001 Advanced technical ceramics - Monolithic ceramics - Part 2: Oxidation test

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