Intelligent Solid Lubricant Materials with Failure Early-Warning Based on Triboluminescence
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In this work, triboluminescent powders (SrAl2O4: Eu2+, Dy3+) were composited with the typical graphite/epoxy solid lubricant materials, and the corresponding tribological properties and triboluminescent performance were investigated. The results suggest that the introduction of SrAl2O4: Eu2+, Dy3+ could not only maintain the friction coefficient and the wear rate of the graphite/epoxy solid lubricant materials, but also endow the composites intense triboluminescence. Based on the above results, a bilayered SrAl2O4: Eu2+, Dy3+/graphite/epoxy self-lubricating bulk material and a bilayered SrAl2O4: Eu2+, Dy3+/graphite/epoxy solid lubricant coating were developed, and the intelligent wear out early-warning was in situ achieved in the lubricant coating based on the monitoring of triboluminescence.
KeywordsSolid lubricant materials Bilayered structure Failure early-warning Triboluminescence
This work is supported by the Natural Science Foundation of Gansu Province (17JR5RA319 and 18JR3RA384), the CAS Pioneer Hundred Talents Program, and the National Natural Science Foundation of China (51805519).
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