Comparison of Ni-Based Self-Fluxing Remelted Coatings for Wear and Corrosion Applications
| Autor: | Roxana Muntean, G. Marginean, Viorel-Aurel Șerban, P. C. Vălean, Norbert Kazamer, Dragoș Toader Pascal |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Controlled atmosphere
Technology Materials science microstructure 02 engineering and technology Surface finish remelting engineering.material wear resistance flame-spraying NiCrBSi vacuum furnace phase composition corrosion behavior 01 natural sciences Indentation hardness Article Corrosion Vacuum furnace Coating 0103 physical sciences General Materials Science Porosity 010302 applied physics Microscopy QC120-168.85 Metallurgy QH201-278.5 021001 nanoscience & nanotechnology Microstructure Engineering (General). Civil engineering (General) TK1-9971 Descriptive and experimental mechanics engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology |
| Zdroj: | Materials, Vol 14, Iss 3293, p 3293 (2021) Materials; Volume 14; Issue 12; Pages: 3293 Materials |
| ISSN: | 1996-1944 |
| Popis: | The present study investigates the possibility to apply a vacuum furnace thermal post-treatment as an alternative solution for flame sprayed NiCrBSi wear and corrosion-resistant coatings, deposited on a low alloyed structural steel. The controlled atmosphere offers advantages regarding the fusion of the coating, porosity reduction, and degassing. An improvement of the applied heating-cooling cycle was performed through the variation of time and temperature. The best performing samples were selected by comparing their porosity and roughness values. The chosen samples were subsequently characterized regarding their microstructure, microhardness, sliding wear, and corrosion behavior. The experimental work confirms that the use of a vacuum remelting post-process reduces the porosity below 1% and leads to the formation of a larger quantity of hard boron-containing phases, promoting a significant decrease of the wear rate, while maintaining a good corrosion behavior. |
| Databáze: | OpenAIRE |
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