Results 21 to 30 of about 256,969 (396)

Microstructure and abrasive wear properties of high-vanadium-chromium wear resistant alloy

open access: yesMaterials Research Express, 2021
To enhance the wear resistance of high chromium cast iron (HCCI, Cr26), a new wear resistant alloy with high vanadium and chromium contents (HCCI-V, 15Cr5V4MoSiMn) was designed and prepared by sand mold casting.
Fangfang Wang   +4 more
doaj   +1 more source

Application of Manganese-Based Materials in Aqueous Rechargeable Zinc-Ion Batteries

open access: yesFrontiers in Energy Research, 2020
In recent years, aqueous rechargeable zinc-ion batteries (AZIBs) have attracted more and more attention not only because they use earth-abundant metals but also due to their improved safety and high volumetric energy density.
Wanhong Zhang   +11 more
doaj   +1 more source

Micro-abrasion-corrosion interactions of Ni-Cr/WC based coatings : approaches to construction of tribo-corrosion maps for the abrasion-corrosion synergism [PDF]

open access: yes, 2011
The process of micro-abrasion-corrosion has been the subject of much research in recent years due to the fact that the action of micron sized particles, typically less than 10 um in diameter, can cause significant degradation of materials in many diverse
Hodge, C., Mathew, M. T., Stack, M. M.
core   +1 more source

Testing of Concrete Abrasion Resistance in Hydraulic Structures on the Lower Sava River [PDF]

open access: yes, 2012
The paper deals with the issues of resistance of concrete linings to long-term abrasion loading caused by waterborne particles, particularly for the proposed hydro power plants on the Sava River in Slovenia.
Kralj, Miha   +5 more
core   +2 more sources

How river rocks round: resolving the shape-size paradox [PDF]

open access: yes, 2014
River-bed sediments display two universal downstream trends: fining, in which particle size decreases; and rounding, where pebble shapes evolve toward ellipsoids. Rounding is known to result from transport-induced abrasion; however many researchers argue
Domokos, G.   +3 more
core   +5 more sources

PORE STRUCTURAL AND FRACTAL ANALYSIS OF THE INFLUENCE OF FLY ASH AND SILICA FUME ON THE MECHANICAL PROPERTY AND ABRASION RESISTANCE OF CONCRETE

open access: yes, 2020
Dam concrete suffers from serious abrasion damages in southwestern China, the abrasion resistance of concrete is therefore one of the most important factors determining the reliability even the safety of the dams.
L. Wang   +4 more
semanticscholar   +1 more source

Effect of Tempering Temperature on Impact Wear Behavior of 30Cr3Mo2WNi Hot-Working Die Steel

open access: yesFrontiers in Materials, 2019
Effects of tempering temperature on impact wear of 30Cr3Mo2WNi hot-working die steel are investigated by SEM, TEM, hardness, and impact wear tests. From 300 to 680°C, the hardness of the steel decreases and the impact toughness increases with increasing ...
Cheng Zhang   +10 more
doaj   +1 more source

Life expectancy of shingle beaches: measuring in situ abrasion [PDF]

open access: yes, 2002
In situ abrasion of shingle beach material is a neglected area of study in coastal geomorphology, with reduction in beach volumes normally attributed to longshore and offshore drift.
Dornbusch, Uwe   +3 more
core   +1 more source

Micro-abrasion resistance of thermochemically treated steels in aqueous solutions: Mechanisms, maps, materials selection [PDF]

open access: yes, 2008
The area of micro-abrasion is an interesting and relatively recent area in tribo-testing methodologies, where small particles of less than 10 μm are employed between interacting surfaces.
Ariza, E.   +4 more
core   +1 more source

Abrasiveness and whitening effect of charcoal-containing whitening toothpastes in permanent teeth.

open access: yesDental Research Journal, 2021
Background: Charcoal toothpastes can whiten teeth through abrasion. The purpose of this study was to determine the level of whitening and abrasiveness of charcoal toothpastes in permanent teeth. Materials and Methods: In this in vitro study, 30 premolars
Masoud Fallahinejad Ghajari   +3 more
doaj   +1 more source

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