Preparation and tribology of ultrafine and amorphous strontium borate
| Autor: | Z S Hu, G X Chen, J X Dong, L G Wang, Y Peng, R Nai |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
musculoskeletal diseases
inorganic chemicals Materials science Scanning electron microscope Mechanical Engineering Metallurgy chemistry.chemical_element Tribology Supercritical fluid Amorphous solid Adsorption chemistry Chemical engineering Transmission electron microscopy General Materials Science Antiwear additive Boron |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 215:133-140 |
| ISSN: | 2041-3076 1464-4207 |
| DOI: | 10.1243/1464420011544978 |
| Popis: | Ultrafine amorphous strontium borate was prepared using an ethanol supercritical fluid drying (ESFD) technique and characterized using transmission electron microscopy (TEM), X-ray diffractometry (XRD), small angle X-ray scattering (SAXS) and nitrogen physical adsorption. Its tribological properties, as an antiwear additive of lubricating oil, were evaluated with four-ball and block-on-ring tribotester. The wear scar was characterized using scanning electron microscopy (SEM). Results indicated that strontium borate prepared in this way possessed a porous structure with a pore size below 20 nm. The wear resistance and load-carrying capacity of lubricating oil were improved by the strontium borate and the friction coefficient was also slightly decreased. The improvement of lubricating oil tribological properties resulted from the deposition of strontium borate and its tribo-chemical reaction product containing boron. |
| Databáze: | OpenAIRE |
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