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Reactive magnetron sputtered wear resistant multilayer transition metal carbide coatings: microstructure and tribo-mechanical properties
Ramadoss Radhika
Published in Royal Society of Chemistry
2015
Volume: 5
   
Issue: 100
Pages: 81790 - 81801
Abstract
To enhance the performance and durability of mechanical components, surface properties need to be modified. In this work, a unique combination of transition metal carbide (TMC) multilayer coatings (TiC/CrC, TiC/ZrC and TiC/WC) were deposited by reactive DC magnetron sputtering on 316LN steel substrates. GIXRD results showed the presence of an amorphous CrC phase in the TiC/CrC multilayer, whereas, crystalline TiC, ZrC and W2C phases were observed in their respective coatings. FESEM analysis indicated the non-columnar structures of TMC layers in all the samples, except the CrC layer in the TiC/CrC multilayer. Solid solutions of the TiC and WC layers at the interface were identified due to the migration of W atoms into the TiC crystal lattices. The poor crystalline nature of the TiC/CrC multilayer led to lower hardness and weak wear resistance. However, enhanced tribo-mechanical properties were observed in TiC/ZrC and TiC/WC multilayer coatings. This is explained by the improved crystallinity and enhanced resistance to plastic deformation. For the selected tribological parameters, abrasive, adhesive and combined abrasive/adhesive wear modes are the major governing factors in determining the wear behaviors of TiC/CrC, TiC/ZrC and TiC/WC coatings, respectively. The chemical stability of deformed wear tracks was observed by Raman spectroscopy. © The Royal Society of Chemistry.
About the journal
JournalData powered by TypesetRSC Advances
PublisherData powered by TypesetRoyal Society of Chemistry
ISSN20462069
Open AccessNo
Concepts (22)
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    Abrasives
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    Carbides
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    Chemical stability
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    Coatings
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    Crystalline materials
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    Magnetron sputtering
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    Mechanical properties
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    Multilayers
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    TITANIUM CARBIDE
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    Transition metals
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    Tungsten carbide
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    Wear of materials
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    Wear resistance
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    Columnar structures
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    Crystalline nature
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    Mechanical components
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    MULTI-LAYER-COATING
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    REACTIVE DC MAGNETRON SPUTTERING
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    STEEL SUBSTRATE
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    TRANSITION METAL CARBIDE
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    TRIBOLOGICAL PARAMETERS
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    ABRASIVE COATINGS