Mechanical Testing of Si3N4/SiC/Graphite Ceramic Composites

Zsuzsanna Koncsik; Maria Berkes Maros; László Kuzsella

doi:10.4028/www.scientific.net/MSF.659.313

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HomeMaterials Science ForumMaterials Science Forum Vol. 659Mechanical Testing of Si3N4/SiC/Graphite Ceramic...

Mechanical Testing of Si₃N₄/SiC/Graphite Ceramic Composites

Abstract:

Pin-on-disc tribological tests were performed on Si3N4/SiC/graphite ceramic composites with 5N applied load, at room temperature in dry conditions. Tests were completed with microhardness tests (F=10N), indentation fracture toughness tests (F=100N), furthermore morphological analyses of the wear tracks by SEM. Based on SEM pictures of the wear traces the main damage mechanism could be identified as an abrasive wear. The purpose of the paper is to model the abrasive wear of the given composites. For this reason lateral crack chipping model suggested by Evans and Marshall for Si3N4 ceramics was used for the assessment of the worn volume of the abrasive wear process. The model has been applied with the aim of validating it

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Periodical:

Materials Science Forum (Volume 659)

Pages:

313-318

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.659.313

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Online since:

September 2010

Authors:

Zsuzsanna Koncsik, Maria Berkes Maros, László Kuzsella

Keywords:

Indentation Fracture Toughness, Pin-On Disc Wear Test, Si₃N₄/SiC/Graphite Composite

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References

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