Matches in SemOpenAlex for { <https://semopenalex.org/work/W2805739917> ?p ?o ?g. }
- W2805739917 endingPage "7263" @default.
- W2805739917 startingPage "7248" @default.
- W2805739917 abstract "Nm-range forces acting between calcite surfaces in water affect macroscopic properties of carbonate rocks and calcite-based granular materials, and are significantly influenced by calcite surface recrystallization. We suggest that the repulsive mechanical effects related to nm-scale surface recrystallization of calcite in water could be partially responsible for the observed decrease of cohesion in calcitic rocks saturated with water. Using the Surface Forces Apparatus (SFA), we simultaneously followed the calcite reactivity and measured the forces in water in two surface configurations: between two rough calcite surfaces (CC), or between rough calcite and a smooth mica surface (CM). We used nm-scale rough, polycrystalline calcite films prepared by Atomic Layer Deposition (ALD). We measured only repulsive forces in CC in CaCO$_3$-saturated water, which was related to hydration effects and/or roughness. Velocity-dependent adhesion forces were measured in monoethylene glycol (MEG) for relatively smooth surfaces in CC. Adhesive or repulsive forces were measured in CM in CaCO$_3$-saturated water depending on the calcite roughness, and the adhesion was likely enhanced by electrostatic effects. The pull-off adhesive force in CM became stronger with time and this increase was correlated with a decrease of roughness at contacts, which parameter could be estimated from the measured force-distance curves. Reactivity of calcite was affected by mass transport across nm to ${mu}$m-thick gaps between the surfaces. Major roughening was observed only for the smoothest calcite films, where the gaps between the two opposing surfaces were nm-thick over ${mu}$m-sized areas, and led to a force of crystallization that could overcome confining pressures of the order of MPa." @default.
- W2805739917 created "2018-06-13" @default.
- W2805739917 creator A5001266610 @default.
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- W2805739917 creator A5022750047 @default.
- W2805739917 creator A5058757159 @default.
- W2805739917 creator A5083090256 @default.
- W2805739917 date "2018-05-28" @default.
- W2805739917 modified "2023-10-18" @default.
- W2805739917 title "Surface Forces Apparatus Measurements of Interactions between Rough and Reactive Calcite Surfaces" @default.
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