Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박주현 | - |
dc.date.accessioned | 2019-12-20T06:29:28Z | - |
dc.date.available | 2019-12-20T06:29:28Z | - |
dc.date.issued | 2018-02 | - |
dc.identifier.citation | MATERIALS TESTING, v. 60, No. 2, Page. 156-162 | en_US |
dc.identifier.issn | 0025-5300 | - |
dc.identifier.uri | https://www.hanser-elibrary.com/doi/abs/10.3139/120.111137 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/121351 | - |
dc.description.abstract | A mechanistic exposure experiment was performed on welded samples of the commercially available Haynes (R) Hastelloy (R) C-4 (R) Ni-Cr-Mo-Fe alloy (65 wt.-% Ni, 16 wt.-% Cr, 16 wt.-% Mo, 3 wt.-% Fe, 2 wt.-% Co, 1 wt.-% Mn, 0.7 wt.-% Ti, 0.5 wt.-% Cu, 0.08 wt.-% Si and 0.01 wt.-% C) at coal gasification pilot plant facilities affiliated with the Institute for Advanced Engineering in Yongin-si, South Korea. The alloy samples were preoxidized at 400 degrees C under a stagnant air atmosphere for 24 h prior to exposure to the corrosive environment (60 % CO, 28.4 % H-2, 2.5 % CO2, 0.8 % CH4, 600 ppm H2S and 110 ppm carbonyl sulfide under 2.005 MPa pressure and 170 degrees C). Thermodynamic Ellingham-Pourbaix stability diagrams were constructed to provide insight into the mechanism of the observed corrosion behavior prevailing in the piping materials between the particulate removal unit and water scrubber of the coal gasification pilot plant. The thermodynamic inference of the corrosion mechanism was supplemented with morphological, compositional and microstructural analyses of the exposed samples using scanning electron microscopy, X-ray diffraction and energy dispersive X-ray spectroscopy analyses performed on the external and cross-sectional surfaces of the recovered corrosion test samples to comprehensively examine the corrosion scale. The X-ray diffraction results revealed stable corrosion products of NiO, MoNi4 and Cr4.6MoNi2.1 after a total accumulated exposure duration of 139 h to the corrosive atmosphere. Scanning electron microscopy and energy dispersive X-ray spectroscopy positively identified the formation of rather continuous and adherent preoxidation corrosion products in the alloy samples, although extensively peeled off oxides were eventually observed as corrosion scale on the post-exposure alloy samples, which were attributed to the combined effects of the evaporation of the hydrated Fe, Al and Cr chlorides and their subsequent transformation into thin (spalled) oxides. | en_US |
dc.description.sponsorship | This work was supported under the project "Development of the design technology of a Korean 300MW class IGCC demonstration plant" funded by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) affiliated with the Ministry of Knowledge Economy of the Government of the Republic of Korea (No. 2011951010001B). J.G. Yang and J.H. Shin (Hanyang University, Ansan, South Korea) are gratefully acknowledged for their assistance. Last, but not least, many thanks to Haynes International, Inc. (Kokomo, Indiana, US) for their generous provision of Haynes (R) Hastelloy (R) C-4 (R) Ni-Cr-Mo-Fe alloy samples in various forms. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | CARL HANSER VERLAG | en_US |
dc.subject | Mixed oxidant corrosion | en_US |
dc.subject | Hastelloy (R) C-4 | en_US |
dc.subject | coal gasification | en_US |
dc.subject | synthetic gas (syngas) | en_US |
dc.subject | high temperature corrosion | en_US |
dc.subject | hydrated chlorides | en_US |
dc.subject | halogen corrosion of metals | en_US |
dc.title | Corrosion behavior of Hastelloy (R) C-4 (R) Ni-Cr-Mo-Fe alloys for coal gasification syngas plants | en_US |
dc.type | Article | en_US |
dc.relation.no | 2 | - |
dc.relation.volume | 60 | - |
dc.identifier.doi | 10.3139/120.111137 | - |
dc.relation.page | 156-162 | - |
dc.relation.journal | MATERIALS TESTING | - |
dc.contributor.googleauthor | Lee, Sungkyu | - |
dc.contributor.googleauthor | Kim, Min Jung | - |
dc.contributor.googleauthor | Park, Joohyun | - |
dc.contributor.googleauthor | Hwang, Sang Yeon | - |
dc.contributor.googleauthor | Chung, Seok-Woo | - |
dc.contributor.googleauthor | Lee, Seung-Jong | - |
dc.contributor.googleauthor | Yun, Yongseung | - |
dc.relation.code | 2018011222 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | basicity | - |
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