(Ti,Al)N–Ni nanostructured coatings: Thermal stability, heat resistance, electrochemical behavior, and adhesive strength with a substrate
| Autor: | F. V. Kiryukhantsev-Korneev, V. S. Sergevnin, I. Yu. Kuchina, A. O. Volkhonskii, D. S. Belov, V. N. Anikin, I. V. Blinkov, Yu. A. Pustov |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
020209 energy Organic Chemistry Metallurgy Metals and Alloys 02 engineering and technology Substrate (electronics) Vacuum arc engineering.material 021001 nanoscience & nanotechnology Surfaces Coatings and Films Corrosion Coating Phase (matter) visual_art 0202 electrical engineering electronic engineering information engineering Materials Chemistry visual_art.visual_art_medium engineering Thermal stability Ceramic Crystallite Composite material 0210 nano-technology |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 52:81-88 |
| ISSN: | 2070-206X 2070-2051 |
| Popis: | In this work, thermal stability and oxidation resistance at temperatures up to 800°C are studied for (Ti,Al)N–(8–10 at %)Ni coatings with a thickness on the order of 4 µm and a crystallite size below 20 nm, which have been prepared via ion–plasma vacuum arc deposition. The composition and structural characteristics of coatings remain stable during 1-h heating in vacuum of 10–4 Pa at temperatures of 600 and 700°C. Heating at a temperature of 800°C leads to an increase in the crystallite size and a decrease in microstrains of a ceramic phase, which is accompanied by a reduction in the hardness of the coating from 51–53 to 31–33 GPa. The coatings are heat resistant up to 800°C and characterized by cohesive failure in scribing. The adhesive strength of coatings with a substrate exceeds 85 N. Studying electrochemical behavior reveals the high efficiency of (Ti,Al)N0.87–Ni coatings in corrosion protection of cutting tools in acid and alkaline environments. |
| Databáze: | OpenAIRE |
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