Diamond-like carbon films and uses thereof
| DWPI Title: Forming film, comprises providing first surface of first binary alloy, contacting first surface with second surface in presence of organic compound, and generating film having diamond-like carbon disposed between first and second surfaces |
| Abstract: The present invention relates to methods of forming a film between two surfaces, in which the film includes diamond-like carbon. Also provided herein are uses of such films, such in sliding contacts and in metal coatings. |
| Use: The method is useful for forming the film, where the film is useful in sliding contact (claimed) and in metal coatings. |
| Advantage: The method: provides the film that exhibits superior wear characteristic, including high hardness, high wear resistance and/or low friction coefficients; utilizes the organic compound can be delivered by using a carrier gas and the component can be operated to provide a mechanical stress to regenerate the film at the contact interface; utilizes the stable nanocrystalline alloy that exhibits high catalytic activity for carbon decomposition (e.g. nanocrystalline gold stabilized platinum-matrix alloys) that enables mitigation of all three critical failure modes; utilizes the high temperature operation that greatly expands the design space and enables higher current density operation and/or switch miniaturization for a given power requirement; utilizes the alloys that impart high thermal and mechanical stability can act to mitigate the eventual progression to failure through microstructural evolution and serve as both the structural and contact surface material, thus simplifying fabrication and effectively mitigating fabrication-defect related failure (e.g. film delamination); and avoids multilayer structures of dissimilar materials by using monolithic devices made of highly stable nanocrystalline alloys should reduce or mitigate variability in device response to input signals. |
| Novelty: Forming a film, comprises: providing a first surface comprising a first binary alloy, where the first binary alloy comprises many columnar grains, and at least one grain has a grain diameter of less than 100 nm and/or an aspect ratio of at least one grain is ≥ 1:2; contacting the first surface with a second surface in the presence of at least one organic compound; and generating a film disposed between first and second surfaces, where the film comprises diamond-like carbon. |
| Filed: 5/21/2019 |
| Application Number: US16418678A |
| Tech ID: SD 14467.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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