High frequency tribological investigations on quartz resonator surfaces

Autor:	Alexander Laschitsch, Diethelm Johannsmann
Rok vydání:	1999
Předmět:	Materials science business.industry Bandwidth (signal processing) General Physics and Astronomy Stiffness Tribology Dissipation Resonator chemistry.chemical_compound Optics chemistry Dissipative system medicine Fluoropolymer medicine.symptom Composite material business Quartz
Zdroj:	Journal of Applied Physics. 85:3759-3765
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.369745
Popis:	We report on the application of quartz crystal resonators for friction measurements in the MHz regime. The dissipative processes are studied by approaching a small sphere to the quartz surface and measuring the shifts in frequency and bandwidth as a function of the sphere–sample distance. Once elastic contact is established, the frequency and the bandwidth can be well described by an increased stiffness of the quartz–sphere system. In the range of distances where contact is just being formed, we observe strongly different behavior for high-friction metal–metal interfaces and low-friction fluoropolymer interfaces. For high-friction interfaces there is an excess dissipation of energy which we attribute to frictional processes in the contact zone.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f65e59f6f14db48bf1e9766d1d0a32f6 https://doi.org/10.1063/1.369745 Zobrazit plný text záznamu