| Hot-corrosion behavior of TiAl-base intermetallics in molten salts | |
| Z. L. Tang; F. H. Wang; W. T. Wu | |
| 1999 | |
| Source Publication | Oxidation of Metals
 |
| ISSN | 0030-770X |
| Volume | 51Issue:3-4Pages:235-250 |
| Abstract | The hot-corrosion behavior of Ti-50Al, Ti-48Al-2Cr-2Nb, and Ti-50Al-10Cr alloys was investigated in (Na, K)(2)SO4 and Na2SO4+NaCl melts. TiAl intermetallics showed much better hot-corrosion resistance in (Na, K)(2)SO4 at 900 degrees C than the Ni-base superalloy K38G. Two types of corrosion products formed on Ti-50Al: some areas were covered with a continuous Al2O3 scale, whereas other areas formed a mixed Al2O3+TiO2 scale; TiS existed at the scale-alloy interface. A mixed Al2O3+TiO2 scale formed on Ti-48Al-2Cr-2Nb, and no sulfide was found beneath the scale. An adherent Al2O3 scale, however, formed on Ti-50Al-10Cr, which provided excellent hot-corrosion resistance. All three alloys suffered severe hot corrosion in Na2SO4+NaCl melts at 850 degrees C. A mixed Al2O3+TiO2 scale formed on all three alloys and many voids and pits existed in the scale-alloy interface. The hot-corrosion mechanisms are discussed. |
| description.department | acad sinica, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;tang, zl (reprint author), acad sinica, inst corros & protect met, state key lab corros & protect, wencui rd 62, shenyang 110015, peoples r china |
| Keyword | Tial Intermetallics Hot-corrosion Melts Gamma-titanium Aluminides Oxidation Alloys |
| URL | 查看原文 |
| WOS ID | WOS:000079312100003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/37504 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Z. L. Tang,F. H. Wang,W. T. Wu. Hot-corrosion behavior of TiAl-base intermetallics in molten salts[J]. Oxidation of Metals,1999,51(3-4):235-250. |
| APA | Z. L. Tang,F. H. Wang,&W. T. Wu.(1999).Hot-corrosion behavior of TiAl-base intermetallics in molten salts.Oxidation of Metals,51(3-4),235-250. |
| MLA | Z. L. Tang,et al."Hot-corrosion behavior of TiAl-base intermetallics in molten salts".Oxidation of Metals 51.3-4(1999):235-250. |
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