Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5358402 | Applied Surface Science | 2014 | 5 Pages |
Abstract
AlTiSiN/CrSiN multilayer coatings were deposited on Si (1Â 0Â 0) and cemented carbide substrates using Cr, AlTi cathodes and SiH4 gases by cathodic arc ion plating system. The influences of SiH4 gases flowrate on the structural and mechanical properties of the coatings were investigated, systematically. AlTiSiN/CrSiN coatings exhibit a B1 NaCl-type nano-multilayered structure in which the CrSiN nano-layers alternate with AlTiSiN nano-layers with multiple orientations of crystal planes indicated by XRD patterns and TEM. Si contents of the coatings increase with increasing SiH4 flowrate. The hardness of the coatings increases to the maximum value of 3500Â Hv0.05 with increasing SiH4 flowrate from 20 to 40Â sccm and then decreases with further addition of SiH4 gases. A higher adhesive force of 73Â N is obtained at the flowrate of 48Â sccm. The coatings exhibit different tribological performance when the mating materials were varied from Si3N4 to cemented carbide balls and the variation of friction coefficients of the coatings against Si3N4 influenced by SiH4 flowrate are not obvious as against cemented carbide balls.
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Authors
B. Yang, C.X. Tian, Q. Wan, S.J. Yan, H.D. Liu, R.Y. Wang, Z.G. Li, Y.M. Chen, D.J. Fu,