| Influences of yttrium on adhesion of oxide scale of Fe-Cr-Al alloy | |
| Xin, L; Li, MS; Zhou, LJ; Wang, FH; Li, TF | |
| 2001-06-01 | |
| Source Publication | JOURNAL OF RARE EARTHS
 |
| ISSN | 1002-0721 |
| Volume | 19Issue:2Pages:117-121 |
| Abstract | The 1100 degreesC isothermal oxidation behavior of Fe-23Cr-5Al alloy modified by yttrium addition was studied by means of thermogravimetric analysis, scanning electron microscopy and energy dispersive X-ray analysis. Yttrium was added to this alloy in the forms of metallic addition, yttrium oxide and ion implant. Cracking and spalling occurred on the convoluted scale formed on Y-free alloy and exposed the substrate. A flat dense scale without spallation was formed on the yttrium alloying addition or yttrium oxide dispersion alloy. The scale adhesion was also improved by 1x10(17)Y(+)/cm(2)-implantation. The results indicate the convoluted morphology of the scale on Fe-23Cr-5Al-0.21Ti alloy is related to the growth mechanism of the alumina scale, and the spallation of the scale is related to sulfur segregation at the scale/alloy interface. The main reason that the adhesion of alumina scale is improved by yttrium addition lies in the following. Yttrium is liable to form a stable yttrium sulfide with sulfur in the alloy and prevent sulfur interface from segregation. Another reason is that the growth mechanism of alumina scale is changed by yttrium addition. |
| Keyword | rare earths yttrium Fe-Cr-Al alloy isothermal oxidation |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Applied |
| WOS ID | WOS:000168494900008 |
| Publisher | INT ACADEMIC PUBL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/113001 |
| Collection | 中国科学院金属研究所 |
| Affiliation | Chinese Acad Sci, Inst Corros & Protect Met, Corros Sci Lab, Shenyang 110015, Peoples R China |
| Recommended Citation GB/T 7714 | Xin, L,Li, MS,Zhou, LJ,et al. Influences of yttrium on adhesion of oxide scale of Fe-Cr-Al alloy[J]. JOURNAL OF RARE EARTHS,2001,19(2):117-121. |
| APA | Xin, L,Li, MS,Zhou, LJ,Wang, FH,&Li, TF.(2001).Influences of yttrium on adhesion of oxide scale of Fe-Cr-Al alloy.JOURNAL OF RARE EARTHS,19(2),117-121. |
| MLA | Xin, L,et al."Influences of yttrium on adhesion of oxide scale of Fe-Cr-Al alloy".JOURNAL OF RARE EARTHS 19.2(2001):117-121. |
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