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ISO 14627

Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for fracture resistance of silicon nitride materials for rolling bearing balls at room temperature by indentation fracture (IF) method

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Organization: ISO
Publication Date: 15 July 2012
Status: active
Page Count: 14
ICS Code (Advanced ceramics): 81.060.30
scope:

This International Standard describes a test method that covers the determination of fracture resistance of silicon nitride bearing balls at room temperature by the indentation fracture (IF) method, as specified in ISO 26602.

This International Standard is intended for use with monolithic silicon nitride ceramics for bearing balls. It does not include other ceramic materials.

This International Standard is for material comparison and quality assurance.

Indentation fracture resistance, KI, IFR as defined in this International Standard is not to be equated to fracture toughness determined using other test methods such as KIsc and KIpb.

NOTE KI, IFR is an estimate of a material's resistance to cracking as introduced by an indenter and has correlations with wear resistance and rolling contact fatigue performance as well as machining processes used for silicon nitride materials since these properties are governed by the resistance to crack extension in localized damage areas. By contrast, fracture toughness, KIsc and KIpb are intrinsic properties of a material and are relevant to macroscopic and catastrophic fracture events with long cracks, rather than those phenomena caused by microscopic and successive damage accumulation associated with short cracks.

Document History

ISO 14627
July 15, 2012
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for fracture resistance of silicon nitride materials for rolling bearing balls at room temperature by indentation fracture (IF) method
This International Standard describes a test method that covers the determination of fracture resistance of silicon nitride bearing balls at room temperature by the indentation fracture (IF) method,...

References

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