Influence of the microstructure of ceramic materials on their wear behavior in mechanical seals
- John Crane UK Ltd., Slough (United Kingdom)
Ceramic materials such as aluminium oxide and silicon carbide are regularly used as one of the counterfaces to oppose carbon graphite in a mechanical seal. Under nominally identical test conditions, the same carbon graphite face can show high wear rates against a material from one supplier but a significantly lower wear rate on a similar material from another. The general descriptions of aluminium oxide and silicon carbide can cover significant differences in properties between materials from various suppliers. Ceramic counterfaces from several manufacturers have been examined, after testing under similar conditions, in order to understand the microstructural factors that influence the wear of the carbon graphite and hence the lift of the mechanical seal. There is evidence to suggest that the wear resistance of the system depends on the grain size distribution, the integrity of the grain bonding and the presence of additional phases. 13 refs., 15 figs., 1 tab.
- OSTI ID:
- 273855
- Journal Information:
- Lubrication Engineering, Vol. 50, Issue 10; Other Information: PBD: Oct 1994
- Country of Publication:
- United States
- Language:
- English
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