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- W2367569706 abstract "Al2O3/TiC ceramic composites with the addition of CaF2 solid lubrication were produced by hot pressing.Sliding wear tests against cemented carbide were performed on the ceramic composites using ring-block method.The mechanism of tribofilm forming was studied.Results showed that the friction coefficient decreased with the increase of CaF2 content,while the wear rate decreased with the increase of CaF2 content up to 10%(mass fraction),with further increases in CaF2 content,the wear rate increased rapidly.A self tribofilm with a smooth surface formed on the wear surface.The self tribofilm acted as solid lubricant film between the sliding couple,thus significantly reduced the friction coefficient.The tribological hot and mechanical press in the tribological process could release CaF2 solid lubricant on the worn surface.When much CaF2 solid lubricant were released and smeared on the worn surface,tribofilm were formed.Cracks were found on the surface of the self tribofilm under repeated frictional condition because of the mechanical stress and thermal stress.After tribofilm falling off,tribofilm will be reformed on the surface,thus the tribofilm runs into a forming,destroying,falling off,reforming circle." @default.
- W2367569706 created "2016-06-24" @default.
- W2367569706 creator A5014214188 @default.
- W2367569706 date "2009-01-01" @default.
- W2367569706 modified "2023-09-24" @default.
- W2367569706 title "Wear Behavior and Mechanism of Self Tribofilm Formation of Al_2O_3/TiC/CaF_2" @default.
- W2367569706 hasPublicationYear "2009" @default.
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