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https://hdl.handle.net/2440/78956
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DC Field | Value | Language |
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dc.contributor.author | Xu, J. | - |
dc.contributor.author | Li, Z. | - |
dc.contributor.author | Xie, Z. | - |
dc.contributor.author | Munroe, P. | - |
dc.contributor.author | Lu, X. | - |
dc.contributor.author | Lan, X. | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Applied Surface Science, 2013; 270:418-427 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | http://hdl.handle.net/2440/78956 | - |
dc.description.abstract | In this study, novel MoSi 2 -based nanocomposite coatings were deposited on Ti-6Al-4V substrates by a two-step process involving firstly, deposition of MoSi 2 -based coatings, using a double cathode glow discharge process and, secondly, plasma nitridation of the as-deposited coatings. The aim of this latter step is to introduce nitrogen into the coating and promote the formation of amorphous silicon nitride. The resulting coatings were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). It was found that the nanocomposite coatings were composed of nanocrystallite Mo 5 Si 3 and MoSi 2 grains embedded in an amorphous Si 3 N 4 matrix. The mechanical properties and damage resistance of the coatings were evaluated by both Vickers indentation and nanoindentation techniques. Dry sliding wear tests were performed using a ball-on-disc type tribometer, in which the coated samples were tested against a ZrO 2 ceramic ball at normal loads of 2.8 and 4.3 N under ambient conditions. Compared with the monolithic MoSi 2 nanocrystalline coating, the specific wear rates of the nanocomposite coatings decreased by an order of magnitude. The specific wear rate was further improved by about 20% through the addition of Al, which was attributed to an optimum combination of mechanical properties. © 2013 Elsevier B.V. | - |
dc.description.statementofresponsibility | Jiang Xua, Zhengyang Li, Zong-Han Xie, Paul Munroe, Xiao Lin Lu, Xiu Feng Lan | - |
dc.language.iso | en | - |
dc.publisher | Elsevier Science BV | - |
dc.rights | Copyright © 2013 Elsevier B.V. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.apsusc.2013.01.041 | - |
dc.subject | Nanocomposites | - |
dc.subject | Mechanical properties | - |
dc.subject | Wear | - |
dc.subject | Coatings | - |
dc.title | Novel high damage-tolerant, wear resistant MoSi2-based nanocomposite coatings | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.apsusc.2013.01.041 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest Mechanical Engineering publications |
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