A Zr-doped single-phase Pt-modified aluminide coating and the enhanced hot corrosion resistance
| Autor: | Shizheng Zhu, Yange Yang, Minghui Chen, Zixian Bao, Chongya Jiang, F.H. Wang, Z.Y. Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science General Chemical Engineering Metallurgy Doping Composite number 02 engineering and technology General Chemistry engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Corrosion Coating 0103 physical sciences engineering General Materials Science Single phase 0210 nano-technology Electroplating Layer (electronics) Aluminide |
| Zdroj: | Corrosion Science. 133:406-416 |
| ISSN: | 0010-938X |
| Popis: | A Zr-doped single-phase (Ni,Pt)Al coating was prepared on a Ni-based single crystal superalloy through electroplating Pt-Zr composite layer and subsequent gaseous aluminisation treatments. Hot corrosion tests of simple aluminide, (Ni,Pt)Al and Zr-doped (Ni,Pt)Al coatings in Na2SO4/NaCl (75:25, wt./wt.) were conducted at 850 °C in static air. The results indicated that the Zr-doped coating showed superior hot corrosion resistance to both conventional aluminide and (Ni,Pt)Al coatings, in which the enhanced performance is mainly attributed to the advantageous effects of Zr that interacts with S and Cl. The mechanism and role of Zr played in the corrosion test are discussed. |
| Databáze: | OpenAIRE |
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