ONORM EN 12923-1 : 2007

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

Defines guidelines to be employed when undertaking corrosion tests on advanced technical ceramics.