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- W2364755859 abstract "The tribological properties of AlN/DLC layer on aluminum alloy LY12 implanted with N plasma based ion implantation (PBII) plus C in situ plasma based ion implantation were investigated. The elemental composition and phase structure of the surface modified layer were characterized by means of X ray photoelectron spectroscopy (XPS) and glancing angle X ray diffraction (GXRD). The carbon layer on the modified surface and the wear tracks at different loads were analyzed with a laser Raman spectrometer. Meanwhile, the nanohardness and elastic modulus of the modified layer were measured with a nano indenter TM II. The XPS result shows that the modified layer is 800 nm thick, which consists of a 400 nm thick diamond like carbon (DLC) layer dominated with sp 2 bond, a transition zone composed of Al 4C 3, Al 2O 3, AlN, β C 3N 4 and other phases, and N implanted zone containing Al 2O 3 and AlN from, from the outer surface of the modified layer to the Al alloy matrix. The nanohardness of the modified layer is as high as 17.4GPa which is approximately 10 times higher than that of LY12. Compared with LY12 alloy matrix, the modified layer shows greatly improved tribological properties under lower load. Namely, the antiwear life of the modified layer is about 20 times higher than that of the matrix, while the friction coefficient of the modified layer is about only 1/3 or 1/5 of that of the matrix, though the wear resistance of the modified layer is worsened with increase of the load. The remarkable improvement in the tribological properties of the modified layer is mainly attributed to the friction reducing and wear resistant action of the DLC films, the increased support to the DLC films by the transition layer and the N implanted layer, and the transformation of diamond like carbon to graphite like carbon under thermal and strain effects in repeated friction." @default.
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- W2364755859 date "2001-01-01" @default.
- W2364755859 modified "2023-09-25" @default.
- W2364755859 title "The Tribological Properties of AlN/DLC Modifying Layer on Aluminum Alloy Implanted with Nitrogen and Carbon Plasma Based Ion Implantation" @default.
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