A comparative study of microstructure, oxidation resistance, mechanical, and tribological properties of coatings in Mo–B–(N), Cr–B–(N) and Ti–B–(N) systems
| Autor: | T. B. Sagalova, A. V. Novikov, Mikhail Petrzhik, F. V. Kiryukhantsev-Korneev, E. A. Levashov, Dmitry V. Shtansky |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Argon Scanning electron microscope chemistry.chemical_element 02 engineering and technology Atmospheric temperature range Nanoindentation Sputter deposition 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences chemistry Chemical engineering Molybdenum 0103 physical sciences Materials Chemistry 0210 nano-technology Titanium |
| Zdroj: | Physics of Metals and Metallography. 118:1136-1146 |
| ISSN: | 1555-6190 0031-918X |
| Popis: | M–B–(N) (M = Mo, Cr, Ti) coatings were obtained by the magnetron sputtering of MoB, CrB2, TiB, and TiB2 targets in argon and in gaseous mixtures of argon with nitrogen. The structure and composition of the coatings have been investigated using scanning electron microscopy, glow-discharge optical emission spectroscopy, and X-ray diffraction. The mechanical and tribological properties of the coatings have been determined by nanoindentation, scratch-testing, and ball-on-disk tribological tests. The experiments on estimating the oxidation resistance of coatings were carried out in a temperature range of 600–1000°С. A distinctive feature of TiB2 coatings was their high hardness (61 GPa). The Cr–B–(N) coatings had high maximum oxidation resistance (900°С (CrB2) and 1000°С (Cr–B–N)) and possessed high resistance to the diffusion of elements from the metallic substrate up to a temperature of 1000°С. The Mo–B–N coatings were significantly inferior to the Ti–B–(N) and Cr–B–(N) coatings in their mechanical properties and oxidation resistance, as well as had а tendency to oxidize in air atmosphere after long exposure at room temperature. All of the coatings with nitrogen possessed a low coefficient of friction (in a range of 0.3–0.5) and low relative wear ((0.8–1.2) × 10–6 mm3 N–1 m–1. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink