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Triboemission: Unveiling hidden tribological processes

AuthorsNevshupa, Roman
Issue Date2019
CitationIbertriva (2019)
AbstractInjection of concentrated mechanical energy into materials at a tribological interface brings about a number of activated electronic and vibrational states, which trigger cascades of physico-chemical reactions including chemical reactions between the activated material and the environment. Many of these reactions end up emitting electrons, ions, gas molecules, electromagnetic radiation, etc. that is collectively known as triboemission. Born at the buried surfaces of a tribological interface triboemission carries valuable information about hidden tribological processes: energy dissipation, mechanical behaviour of materials (plastic flow, fracture, etc.) and tribochemical reactions (Fig. 1). This work summarizes the results of our recent studies of triboemission of gases, triboelectrification and triboluminescence aimed at establishing links between triboemission and material degradation, both structural and chemical. The research findings led us to the development of innovative methods for non-destructive in situ and real-time evaluation of integrity of tribological materials and coatings, characterization of tribochemical transformation of lubricants, as well as other characterization methods far beyond the tribology area.
DescriptionResumen del trabajo presentado a Ibertriva (X Iberian Conference on Tribology / XI Iberian Vacuum Conference), celebrada en Sevilla (España) del 26 al 28 de junio de 2019.
Appears in Collections:(IETCC) Comunicaciones congresos
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