| AVS 60th International Symposium and Exhibition | |
| Tribology Focus Topic | Tuesday Sessions |
| Session TR-TuP |
| Session: | Tribology Poster Session |
| Presenter: | A. Kasahara, National Institute for Materials Science, Japan |
| Authors: | A. Kasahara, National Institute for Materials Science, Japan M. Sasaki, National Institute for Materials Science, Japan M. Goto, National Institute for Materials Science, Japan H. Honda, National Institute for Materials Science, Japan H. Suzuki, National Institute for Materials Science, Japan M. Tosa, National Institute for Materials Science, Japan |
| Correspondent: | Click to Email |
Research on low friction materials has attracted considerable attention from the viewpoint of effective energy use for realizing a low carbon society, as these materials can substantially reduce energy loss in bearings, gears, and other mechanical drive parts. However a problem is an increase in friction due to the oxidation reaction in high-temperature environments.
We therefore tried to develop advanced high-temperature motion materials with excellent tribological properties (i.e.: little wear, low friction, good lubrication) in order to guarantee a smooth sliding motion over long periods. Our final purpose is to design coatings suitable for smooth sliding motion up to 1073K.
As a first step, In order to measure friction at high-temperatures exceeding 673Ｋ, we designed and manufactured a prototype of a high temperature tribological evaluation device, For this purpose high-temperature friction measurement system based on Bowden-Leben type system has been successfully developed that can evaluate sliding friction force under changing load from 9.8N to 0.098N and under changing heat temperature from 1073K to room-temperature.
We have investigated solid lubricant coatings in order to develop high performance motion mechanism at high-temperature. In previous work, we developed high temperature lubricating coatings by precise control of coating processes using ceramics such as copper oxide, zinc oxide, boron nitride, etc. This time, we focused Cr2O3, since this material has been reported to be suitable at high-temperature, but not well been investigated for industrial application to sliding parts.
We have carried out basic study of SUS304, SUS440C and SUJ2 to find out suitable friction parameter at high-temperature from 973K to room-temperature. Their tribological characteristics at high-temperature was evaluated by high-temperature friction measurement system , abrasion measurements by Stylus Surface Profiler and Micro Slurry-jet Erosion.