Effects of microstructure design and feedstock species in the bond coat on thermal stability of thermal barrier coatings
| Autor: | Byung Il Yang, Yeon-Gil Jung, Zhe Lu, Je-Hyun Lee, Sang Won Myoung, Soo-Hyeok Jeon, Seoung Soo Lee |
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| Rok vydání: | 2018 |
| Předmět: |
Thermal shock
Materials science chemistry.chemical_element Bioengineering Raw material Condensed Matter Physics Microstructure Metal Thermal barrier coating Nickel chemistry visual_art Materials Chemistry visual_art.visual_art_medium Thermal stability Electrical and Electronic Engineering Composite material Layer (electronics) |
| Zdroj: | International Journal of Nanotechnology. 15:545 |
| ISSN: | 1741-8151 1475-7435 |
| DOI: | 10.1504/ijnt.2018.096345 |
| Popis: | The effects of the microstructure design and feedstock species in a bond coat on the thermal stability of thermal barrier coatings (TBCs) were investigated through thermal shock (TS) tests. Three kinds of feedstock (AMDRY 9951 : cobalt (Co)-based feedstock, AMDRY 997 : nickel (Ni)-based feedstock, and AMDRY 9624 : Ni-based feedstock) were employed for the single layer bond coat and the first layer in the double layer bond coat, which were prepared by high velocity oxy-fuel process. The second layer in the bond coat and the top coat was formed by air plasma spray process using Ni-based metallic powder (AMDRY 962) and 8YSZ (METCO 204 C-NS), respectively. The TS tests were performed till more than 50% of the region spalled in the TBC. The TBC system with the Co-based bond coat showed a better thermal durability than those with the Ni-based bond coats. The TBC systems with the double layer in the bond coat showed a better lifetime performance than those with the single layer, independent of the feedstock species. |
| Databáze: | OpenAIRE |
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