| The corrosion of three commercial steels in reducing atmospheres containing HCl and H2S at 873 K | |
| Pan, TJ; Al-Omary, M; Zeng, CL; Wu, WT; Niu, Y | |
| Corresponding Author | Niu, Y() |
| 2005 | |
| Source Publication | HIGH TEMPERATURE MATERIALS AND PROCESSES
 |
| ISSN | 0334-6455 |
| Volume | 24Issue:3Pages:193-203 |
| Abstract | The behavior of three commercial steels with different Cr contents (NF616, 12CrMoV and SS304) at 873K in a gas mixture of (vol.%) 2 H-2, 0.5 HCl, 0.005 H2S, balance CO2, providing partial pressures of 3.7x10(-22) 22 atm O-2, 3.9x10(-9) atm S-2 and 2.4x 10(-14) atm Cl-2, has been studied to examine the effect of a minor addition of H2S to a reducing HCl-containing atmosphere on the corrosion of the same materials, studied previously under similar test conditions in the absence of H2S. The presence of sulfur accelerated the corrosion of the two steels with lower chromium contents, but had no effect on the corrosion of SS304. Both NF616 and 12CrMoV formed duplex external scales plus a zone of internal attack rich in oxygen and chromium with little sulfur (up to 2 at.%). Little or no chlorine could be detected in the internal attack zone and in the scale. In general, the scales formed on these two steels in the present atmosphere were quite porous with respect to those corroded in the H2S-free atmosphere. Conversely, the stainless steel SS304 corroded much more slowly, forming a protective chromia scale as in the H2S-free atmosphere. Thus, the beneficial effect of chromium on the corrosion resistance of the steels in this atmosphere is only effective at large Cr contents. The mechanism of "active oxidation", based on the formation, diffusion and re-oxidation of volatile chlorides of both iron and chromium, has been adopted to interpret the results obtained. |
| Keyword | Fe-Cr steels reducing atmosphere corrosion HCl and H2S effects |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000231793800008 |
| Publisher | FREUND PUBLISHING HOUSE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/82958 |
| Corresponding Author | Niu, Y |
| Affiliation | 1.Univ Sharjah, Dept Basic Sci, Sharjah, U Arab Emirates 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Pan, TJ,Al-Omary, M,Zeng, CL,et al. The corrosion of three commercial steels in reducing atmospheres containing HCl and H2S at 873 K[J]. HIGH TEMPERATURE MATERIALS AND PROCESSES,2005,24(3):193-203. |
| APA | Pan, TJ,Al-Omary, M,Zeng, CL,Wu, WT,&Niu, Y.(2005).The corrosion of three commercial steels in reducing atmospheres containing HCl and H2S at 873 K.HIGH TEMPERATURE MATERIALS AND PROCESSES,24(3),193-203. |
| MLA | Pan, TJ,et al."The corrosion of three commercial steels in reducing atmospheres containing HCl and H2S at 873 K".HIGH TEMPERATURE MATERIALS AND PROCESSES 24.3(2005):193-203. |
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