Ceramic contact fatigue

ROLLING CONTACT FATIGUE PROPERTIES AND FRACTURE RESISTANCE FOR SILICON NITRIDE CERAMICS WITH VARIOUS MICROSTRUCTURES... 

Rolling Contact Fatigue Properties and Fracture Resistance for Silicon Nitride Ceramics... 

This work has been supported by METI, Japan, as part of the international standardization project of test methods for rolling contact fatigue and fracture resistance of ceramics for ball bearings. 

Rolling Contact Fatigue Properties and Fracture Resistance for Silicon Nitride Ceramics with Various Microstructures Hiroyuki Miyazaki, Wataru Kanematsu, Hideki Hyuga,... 

The SIF values along the crack front can provide the necessary information to determine whether the ceramic ball would survive or fail. Rolling contact fatigue failure of silicon nitride bearing elements with surface cracks can be predicted using the numerical fracture mechanics analysis. 

Phenolic-neoprene contact cements are used for structural metal-metal bonding. especially where fatigue resistance and low temperature performance are important [209]. They are also used for bonding textiles, wood, rubbers, plastics, ceramics, and glass to metal and to one another. Solvent toxicity and flammability has greatly reduced the use of contact cements in the wood products industry. Water-based contact cements persist, but generally do not perform as well as the solvent systems, thus allowing market erosion by alternative binders. 

In several eases, non-metallie materials such as polymers, rubbers, ceramics, wood or concrete must also be taken into consideration (see Section 10.1.11). With respect to materials selection for screws, bolts, nuts, rivets or oflier small parts for use under possible galvanic corrosion conditions, it should be checked that they are a little more noble (have a little more positive corrosion potential in the actual enviroiunent) than the components they are binding together, or are in metallic contact with in any way. In addition, one should be particularly careful to avoid catastrophic deterioration forms such as hydrogen embrittlement, stress corrosion cracking and corrosion fatigue in such parts. 

N. P. Padture, B. R. Lawn, Fatigue in ceramics with interconnecting weak interfaces a study using cyclic Hertzian contacts, Acta Metall. 43, 1609 17 (1995). 

M. Hadfield and T. A. Stolarski, Observations of delamination fatigue on pre-cracked ceramic elements in rolling-contact. Ceramics International, 21 (1995) 125-130. 

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