| RAPID OXIDATION AND SULFIDATION OF FEAL INTERMETALLICS IN NACL-(NA,K)2SO4 MELTS AT 800-850-DEGREES-C | |
| C. L. Zeng; Y. Niu; W. T. Wu; J. Q. Zhang; F. Gesmundo; J. T. Guo | |
| 1993 | |
| Source Publication | Solid State Ionics
 |
| ISSN | 0167-2738 |
| Volume | 23132Pages:672-677 |
| Abstract | The corrosion of FeAl both pure and containing Zr or B additions has been studied in (Na, K)2SO4-NaCl melt at 800-850-degrees-C in air. The hot-corrosion resistance of pure FeAl is rather poor due to the absence of a continuous protective layer of alumina and to the presence of FeS in the scales. A strong intergranular attack, denoted as grain-boundary pest, produces oxide and sulfide precipitates in the alloy, showing that oxygen and sulfur can diffuse rapidly along the grain boundaries. These internal precipitates produce compressive stresses which deteriorate the bonding between grains and lead to the formation of cracks, resulting eventually in a complete sample disintegration over most of its surface. Similar but less important pest attack is also observed for FeAl containing Zr, but not in the case of B addition. The beneficial effect of B in our experimental conditions may be ascribed to its ability to promote the formation of protective alumina scales, to inhibit scale cracking and to hinder the penetration of oxygen and sulfur along the grain boundaries in the alloy. Zr has a smaller effect on these processes. |
| description.department | univ genoa,fac ingn,ist chim,pad d,i-16129 genoa,italy. acad sinica,inst corros & protect met,corros sci lab,shenyang 110015,peoples r china. acad sinica,inst met res,shenyang 110015,peoples r china. |
| Keyword | Boron-doped Ni3al Phases Alloys |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/39169 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | C. L. Zeng,Y. Niu,W. T. Wu,et al. RAPID OXIDATION AND SULFIDATION OF FEAL INTERMETALLICS IN NACL-(NA,K)2SO4 MELTS AT 800-850-DEGREES-C[J]. Solid State Ionics,1993,23132:672-677. |
| APA | C. L. Zeng,Y. Niu,W. T. Wu,J. Q. Zhang,F. Gesmundo,&J. T. Guo.(1993).RAPID OXIDATION AND SULFIDATION OF FEAL INTERMETALLICS IN NACL-(NA,K)2SO4 MELTS AT 800-850-DEGREES-C.Solid State Ionics,23132,672-677. |
| MLA | C. L. Zeng,et al."RAPID OXIDATION AND SULFIDATION OF FEAL INTERMETALLICS IN NACL-(NA,K)2SO4 MELTS AT 800-850-DEGREES-C".Solid State Ionics 23132(1993):672-677. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment