I.S. EN 12923-1:2006
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF
30-09-2023
English
01-01-2006
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
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
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