Wear resistance of TiN(Ti2N)/Ti composite layer formed on C17200 alloy by plasma surface Ti-alloying and nitriding
| Autor: | H.J. Yang, Xuguang Liu, Q. Guo, X.P. Liu, T.X. Meng, Lili Liu, Z.X. Wang, H.H. Shen |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Composite number Alloy General Physics and Astronomy chemistry.chemical_element Young's modulus 02 engineering and technology engineering.material 01 natural sciences Diffusion layer symbols.namesake 0103 physical sciences 010302 applied physics Metallurgy Surfaces and Interfaces General Chemistry Tribology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Surfaces Coatings and Films chemistry symbols engineering 0210 nano-technology Tin Nitriding |
| Zdroj: | Applied Surface Science. 388:103-108 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2016.03.059 |
| Popis: | The duplex treatment of plasma Ti-alloying and plasma nitriding was applied on the surface of C17200 alloy to improve its wear resistance. C17200 substrate was alloyed with Ti using double glow plasma alloying to form a Ti-alloyed layer in its surface, and then treated by plasma nitriding to make a TiN(Ti 2 N) alloying layer based on the Ti-alloyed surface. The microstructure and formation mechanism were studied by using GDOES, XRD and SEM. The hardness, tribological property and electrical conductivity of C17200 alloy after plasma alloying and nitriding were investigated by mean of micro-hardness tester, friction and wear testers as well as impedance analyzers. Modulus of elasticity and the adhesive strength of TiN(Ti 2 N)/Ti composite layer were evaluated by nano-indenter and scratch tester. The result shows that a TiN(Ti 2 N)-Ti-Be-Cu composite layer with a thickness of 27 μm is formed in the C17200 surface and is mainly composed of TiN, Ti 2 N, Cu(Ti) solid solution, etc. The composite alloying surface consists of the hard TiN(Ti 2 N)-rich layer on the top surface and Ti-Cu-Be diffusion layer, showing a strong adhesive strength with the C17200 substrate and a little decrease in the modulus of elasticity. A certain amount of Cu and Be together with TiN/Ti 2 N exists in the outmost, resulting in a better combination of wear resistance and conductive performance. |
| Databáze: | OpenAIRE |
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