Surface modification of M2 steel by combination of cathodic cage plasma deposition and magnetron sputtered MoS2-TiN multilayer coatings
| Autor: | I.G. Nascimento, Thércio Henrique de Carvalho Costa, L. L. F. Lima, G.B. Praxedes, Muhammad Naeem, Salete Martins Alves, Rômulo Ribeiro Magalhães de Sousa, Javed Iqbal, M. S. Libório |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology engineering.material Indentation and hardness chemistry.chemical_compound 0203 mechanical engineering Coating Materials Chemistry Composite material Molybdenum disulfide coating Titanium nitride coating Surfaces and Interfaces General Chemistry Sputter deposition 021001 nanoscience & nanotechnology Condensed Matter Physics Titanium nitride Hardness Surfaces Coatings and Films 020303 mechanical engineering & transports chemistry Lubrication engineering Solid lubrication 0210 nano-technology Tin Nitriding Titanium |
| Zdroj: | Repositório Institucional da UFRN Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
| Popis: | Titanium nitride (TiN) is a good choice for the improvement in surface hardness of high-speed steel. Unfortunately, it has low adhesion with substrate and exhibits high friction coefficient; as a result it does not provide sufficient protection against sliding wear in metal-to-metal contact. The adhesion problem can be removed by nitriding process, whereas friction coefficient can be reduced by solid lubrication coating. In this study, an attempt is made to synthesize TiN hard coating as well as solid lubrication coating of molybdenum disulfide (MoS2) using magnetron sputtering, along with substrate pre-treatment by cathodic cage plasma deposition using titanium cathodic cage. The cathodic cage plasma nitrided sample exhibits significantly higher surface hardness, which reduced by solid lubrication coating. The nitrided sample depicts the presence of iron nitrides, TiN and nitrogen diffused martensite phases, whereas coated samples shows the presence of MoS2 and TiN phases. The friction coefficient and machining temperature are dramatically reduced by lubrication coating. This study recommends that the use of cathodic cage plasma nitriding using titanium cathodic cage is beneficial for improved surface hardness, and addition of solid lubrication coating is beneficial for reducing the coefficient of friction and machining temperature by scarifying hardness. As, both the systems are already proven to be appropriate for industrial-scale uses, thus results from this study can be applied for industrial-scale application. |
| Databáze: | OpenAIRE |
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