| Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air | |
| Z. J. Lin; Y. C. Zhou; M. S. Li; J. Y. Wang | |
| 2006 | |
| Source Publication | Journal of the European Ceramic Society
 |
| ISSN | 0955-2219 |
| Volume | 26Issue:16Pages:3871-3879 |
| Abstract | The hot corrosion behavior of Na2SO4-coated Ti2AlC was investigated by means of thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy/energy dispersive spectroscopy. This carbide displays good hot corrosion resistance below the melting point of Na2SO4 while the corrosion attacks become virulent when the salt is molten. A protectively continuous Al2O3 layer forms and imparts good corrosion resistance, and consequently, the corrosion kinetics is generally parabolic at 850 degrees C. However, porous oxide scales fail to protect the Ti2AlC substrate at 900 and 1000 degrees C. The segregation of sulfur at the corrosion scale/substrate interface accelerates the corrosion of Ti2AlC. Furthermore, a convenient and efficient pre-oxidation method is proposed to improve the high-temperature hot corrosion resistance of Ti2AlC. An Al2O3 scale formed during pre-oxidation treatment can remarkably restrain the infiltration of the molten salt into the substrate and prevent the substrate from severe corrosion attacks. (c) 2005 Elsevier Ltd. All rights reserved. |
| description.department | chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;yczhou@imr.ac.cn |
| Keyword | Ti2alc Al2o3 Corrosion High-temperature Oxidation Polycrystalline Ti2alc Carbides Behavior Ti3alc2 Alumina Phase |
| URL | 查看原文 |
| WOS ID | WOS:000241841300046 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/34331 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Z. J. Lin,Y. C. Zhou,M. S. Li,et al. Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air[J]. Journal of the European Ceramic Society,2006,26(16):3871-3879. |
| APA | Z. J. Lin,Y. C. Zhou,M. S. Li,&J. Y. Wang.(2006).Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air.Journal of the European Ceramic Society,26(16),3871-3879. |
| MLA | Z. J. Lin,et al."Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air".Journal of the European Ceramic Society 26.16(2006):3871-3879. |
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