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http://dx.doi.org/10.9725/kstle.2002.18.5.324

Micro Friction and Wear Characteristics of Organically Modified Hybrid Ceramic Materials Synthesized by A Sol-Gel Process  

Han, Hung-Gu (Tribology Research Center, KIST)
Kong, Ho-Sung (Tribology Research Center, KIST)
Yoon, Eui-Sung (Tribology Research Center, KIST)
Yang, Seung-Ho (Tribology Research Center, KIST)
Publication Information
Tribology and Lubricants / v.18, no.5, 2002 , pp. 324-332 More about this Journal
Abstract
In order to enhance the thermal stability of binder materials of bonded type solid lubricants, several metal-alkoxide based sol-gel materials such as methyltrimethoxysilane(MTMOS), titaniumisopropoxide$(Ti(Opr^i)_4),$ zirconiumisopropoxide $(Zr(Opr^i)_4)$ and aluminumbutoxide$(Al(Obu^t)_4)$ were chemically modified by epoxy-, acrylic- and fluoro-silane compounds, respectively. Friction and wear characteristics of these hybrid ceramic materials were tested with a micro tribo-tester, and evaluated with respect to both heat-curing temperature and the time. Test results generally showed that hybrid ceramic materials modified by epoxy-silane compounds had a low friction compared to others. And the higher het-curing temperature and the longer heat treatment time resulted in the higher friction and the lower wear. IR spectroscopic analyses revealed that these results were caused mainly by the increased metal oxide content in hybrid ceramics when the heat-curing temperature was over $320^{\circ}C.$
Keywords
sol-gel; friction; wear; organically modified ceramics; bonded lubricants; binder;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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