Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator
| Autor: | M. N. Yapryntsev, O. N. Vagina, Maria Arseenko, O.V. Kolisnichenko, Vseslav Novikov, M. S. Prozorova, V. V. Sirota, Yuri Tyurin, Marina Kovaleva |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
zircon
coating microstructure micro-hardness wear multi-chamber gas-dynamic accelerator Materials science Scanning electron microscope 02 engineering and technology engineering.material 01 natural sciences Indentation hardness law.invention Fracture toughness Optical microscope Coating law 0103 physical sciences Materials Chemistry Ceramic Composite material Porosity 010302 applied physics Surfaces and Interfaces 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films lcsh:TA1-2040 visual_art visual_art.visual_art_medium engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology |
| Zdroj: | Coatings; Volume 7; Issue 9; Pages: 142 Coatings, Vol 7, Iss 9, p 142 (2017) |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings7090142 |
| Popis: | In this work, dense zircon-based ceramic coatings were obtained from inexpensive zircon powder on a steel substrate by using a new multi-chamber gas-dynamic accelerator. The microstructure and phase composition of the coating were characterized by scanning electron microscopy, optical microscopy, and X-ray diffraction. The mechanical properties of the coatings were evaluated using microindentation, wear tests and bonding strength tests. The results showed that the obtained zircon-based ceramic coatings were continuous without cracks and bonded well with substrate without a sublayer. The zircon-based ceramic coatings consisted of c-ZrO2 (major phase), m-ZrO2 and SiO2. The zircon-based ceramic coatings had a porosity of 0.1%, hardness of 526 ± 65 HV0.2, and a fracture toughness of 2.5 ± 0.6 (МPа∙m1/2). The coatings showed the low specific wear rate and average erosion rate. The failure mode occurring in the tested coatings was cohesive. |
| Databáze: | OpenAIRE |
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