UNI EN 843-6 : 2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
  3.1 General terms
  3.2 Terms classifying inherently volume-distributed
      fracture origins
  3.3 Terms classifying inherently surface-distributed
      fracture origins
  3.4 Terms classifying features on fracture surfaces
4 Significance and use
5 Apparatus
  5.1 Preparation and cleaning facilities
  5.2 Observational facilities
6 Recommended procedure
  6.1 Outline
  6.2 Specimen storage and cleaning of fracture surfaces
  6.3 Visual inspection
  6.4 Optical microscope examination
  6.5 Identification of major fracture surface features
  6.6 Scanning electron microscope examination
  6.7 Identification of fracture origin
  6.8 Identification of chemical inhomogeneity at
      fracture origin
  6.9 Drawing conclusions
7 Report
Annex A (informative) - Crack patterns in ceramic bodies
Annex B (informative) - Examples of general features of
        fracture surfaces
Annex C (informative) - Examples of procedure for
        fracture origin identification
  C.1 Single large pores
  C.2 Agglomerates
  C.3 Large grains
  C.4 Compositional inhomogeneities
  C.5 Delaminations
  C.6 Handling damage
  C.7 Machining damage
  C.8 Oxidation pitting
  C.9 Complex origins
  C.10 No obvious origins
Annex D (informative) - Use of fracture mechanical
        information to aid fractography
  D.1 Fracture stress and origin size
  D.2 Fracture stress and fracture mirror size
Annex E (informative) - Example layout of reporting
        pro-forma
Bibliography

Covers guidelines to be adopted when evaluating the appearance of the fracture surface of an advanced technical ceramic.