Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating
The article describes the effect of heat treatment on the structural-phase state and properties of a multilayer Cr-Al-Co-Y coating obtained by magnetron sputtering. Heat treatment was carried out at 400, 800 and 1000 °C. The study of the microstructure was carried out by electron microscopy with ene...
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MDPI AG
2022-07-01
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| Series: | Crystals |
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| author | Mazhyn Skakov Assel Zhilkashinova Almira Zhilkashinova Madi Abilev Nadezhda Prokhorenkova Maksut Agelmenev Akmaral Ismailova |
| author_facet | Mazhyn Skakov Assel Zhilkashinova Almira Zhilkashinova Madi Abilev Nadezhda Prokhorenkova Maksut Agelmenev Akmaral Ismailova |
| author_sort | Mazhyn Skakov |
| collection | DOAJ |
| description | The article describes the effect of heat treatment on the structural-phase state and properties of a multilayer Cr-Al-Co-Y coating obtained by magnetron sputtering. Heat treatment was carried out at 400, 800 and 1000 °C. The study of the microstructure was carried out by electron microscopy with energy dispersive analysis and powder X-ray diffraction. The surface of the samples was studied by atomic force microscopy. The thickness of the Co-Cr-Al-Y coatings was 1.5–1.7 ± 0.2 µm. The obtained coatings are characterized by a hardness of 4.7–6.4 GPa. A distinctive feature of the layers is the absence of a crystalline structure in some areas of the coating. The main process occurring during the thermal treatment is the formation of a spinel-type phase. For a single-layer sample after heat treatment at 400 °C, it was not possible to fix extraneous reflections except for the reflections of the silicon substrate 111 and 220. For the rest of the samples, the appearance of reflections of a number of phases was noticed, such as: SiO<sub>2</sub>, CoO, AlSi<sub>0.5</sub>O<sub>2.5</sub> and CrAl<sub>0.4</sub>2Si<sub>1.58</sub>. An increase in the treatment temperature up to 800 °C did not lead to significant changes. In the case of the multilayer sample, the reflections of various impurity phases disappeared and the Co<sub>3</sub>O<sub>4</sub> phase was formed. For samples treated at 1000 °C, the formation of a spinel-type phase (Co<sub>3</sub>O<sub>4</sub>-CoCr<sub>2</sub>O<sub>4</sub>) was observed in all cases. Data on the structural-phase state and properties of the multilayer Co-Cr-Al-Y coating can be used to predict the nature of such coatings after heat treatment. |
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| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T09:58:41Z |
| publishDate | 2022-07-01 |
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| spelling | doaj.art-c458d5b72d494f08984140f298efb94f2023-12-01T23:35:02ZengMDPI AGCrystals2073-43522022-07-01128105610.3390/cryst12081056Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y CoatingMazhyn Skakov0Assel Zhilkashinova1Almira Zhilkashinova2Madi Abilev3Nadezhda Prokhorenkova4Maksut Agelmenev5Akmaral Ismailova6National Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk 070002, KazakhstanNational Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk 070002, KazakhstanNational Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk 070002, KazakhstanNational Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk 070002, KazakhstanNational Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk 070002, KazakhstanDepartment of Physics and Nanotechnology, Karaganda Buketov University, 28 University Street, Karaganda 100024, KazakhstanDepartment of Analytical, Colloid Chemistry and Technology of Rare Elements, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty 050040, KazakhstanThe article describes the effect of heat treatment on the structural-phase state and properties of a multilayer Cr-Al-Co-Y coating obtained by magnetron sputtering. Heat treatment was carried out at 400, 800 and 1000 °C. The study of the microstructure was carried out by electron microscopy with energy dispersive analysis and powder X-ray diffraction. The surface of the samples was studied by atomic force microscopy. The thickness of the Co-Cr-Al-Y coatings was 1.5–1.7 ± 0.2 µm. The obtained coatings are characterized by a hardness of 4.7–6.4 GPa. A distinctive feature of the layers is the absence of a crystalline structure in some areas of the coating. The main process occurring during the thermal treatment is the formation of a spinel-type phase. For a single-layer sample after heat treatment at 400 °C, it was not possible to fix extraneous reflections except for the reflections of the silicon substrate 111 and 220. For the rest of the samples, the appearance of reflections of a number of phases was noticed, such as: SiO<sub>2</sub>, CoO, AlSi<sub>0.5</sub>O<sub>2.5</sub> and CrAl<sub>0.4</sub>2Si<sub>1.58</sub>. An increase in the treatment temperature up to 800 °C did not lead to significant changes. In the case of the multilayer sample, the reflections of various impurity phases disappeared and the Co<sub>3</sub>O<sub>4</sub> phase was formed. For samples treated at 1000 °C, the formation of a spinel-type phase (Co<sub>3</sub>O<sub>4</sub>-CoCr<sub>2</sub>O<sub>4</sub>) was observed in all cases. Data on the structural-phase state and properties of the multilayer Co-Cr-Al-Y coating can be used to predict the nature of such coatings after heat treatment.https://www.mdpi.com/2073-4352/12/8/1056multilayer Co-Cr-Al-Y coatingheat treatmentmagnetron sputteringmicrostructurephase composition |
| spellingShingle | Mazhyn Skakov Assel Zhilkashinova Almira Zhilkashinova Madi Abilev Nadezhda Prokhorenkova Maksut Agelmenev Akmaral Ismailova Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating Crystals multilayer Co-Cr-Al-Y coating heat treatment magnetron sputtering microstructure phase composition |
| title | Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating |
| title_full | Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating |
| title_fullStr | Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating |
| title_full_unstemmed | Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating |
| title_short | Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating |
| title_sort | effect of heat treatment on the structural phase state and properties of a multilayer co cr al y coating |
| topic | multilayer Co-Cr-Al-Y coating heat treatment magnetron sputtering microstructure phase composition |
| url | https://www.mdpi.com/2073-4352/12/8/1056 |
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