High-temperature mechanical and thermochemical properties of NbMoTaW refractory high-entropy alloy coatings produced via Nano Particle Deposition System (NPDS)
- Title
- High-temperature mechanical and thermochemical properties of NbMoTaW refractory high-entropy alloy coatings produced via Nano Particle Deposition System (NPDS)
- Author
- 이선영
- Keywords
- Refractory high-entropy alloy; Coating; Nanoparticle deposition system; High-temperature hardness; Oxidation resistance
- Issue Date
- 2021-09
- Publisher
- ELSEVIER SCI LTD
- Citation
- INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, v. 99, Page. 1-6
- Abstract
- In this study, we investigated the oxidation resistivity and mechanical properties of NbMoTaW refractory highentropy alloy (HEA)-based coatings at high temperatures. The coating layers were produced using mechanically alloyed HEA powders via Nano Particle Deposition System (NPDS). The as-milled powder is comprised of W-rich BCC1 and NbMoTa-rich BCC2 phases. After the deposition process, the W-rich BCC1 phase remained, while NbMoTa-rich BCC2 phases were transformed into complex NbMo-rich and Ta-rich oxides. Consequently, the NbMoTaW RHEA composite coating exhibited outstanding oxidation resistivity and high nanoindentation hardness at high temperatures compared to that of commercial coating materials, possibly owing to the combination of the W-rich solid solution phase and internal oxides.
- URI
- https://www.sciencedirect.com/science/article/pii/S0263436821001268https://repository.hanyang.ac.kr/handle/20.500.11754/170586
- ISSN
- 0263-4368
- DOI
- 10.1016/j.ijrmhm.2021.105594
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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