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Hot corrosion behavior of porous nickel-based alloys containing molybdenum in the presence of NaCl at 750 degrees C
Chen, Lingyun1,2; Lan, Hao2; Huang, Chuanbing2; Yang, Bin1,3; Du, Lingzhong2; Zhang, Weigang2
2017-09-01
Source PublicationENGINEERING FAILURE ANALYSIS
ISSN1350-6307
Volume79Issue:SEPPages:245-252
Abstract

The hot corrosion of porous Ni-23Cr-xMo (0%, 4.5%, 9.0%, 13.5%, mass fraction) alloys tested at 750 degrees C under cyclic procedure was investigated in order to elucidate the effect of Mo addition on hot corrosion in the presence of NaCl. The hot corrosion experiments were performed at 750 degrees C in air with 4 mg cm(-2) NaCl deposit. The performance of the alloys was evaluated by the results of weight change kinetics. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) were used to characterize the corrosion products. The results indicate that NaCl accelerated the oxidation of the alloys by chloridized elements Mo and Cr. Among the porous Ni-23Cr-xMo alloys, Ni-23Cr-9Mo alloy exhibited the best hot corrosion resistance due to the formation of NiO-NiCr2O4-Cr2O3 oxide scales. Furthermore, these oxide scales were confirmed more effective to protect the alloys after adding of Mo.

KeywordNicrmo Hot Corrosion Oxidation Nacl
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.engfailanal.2017.05.009
Indexed BySCI
Language英语
WOS KeywordHIGH-TEMPERATURE ; WATER-VAPOR ; OXIDATION ; COATINGS
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Characterization & Testing
Funding OrganizationNational Natural Science Foundation of China(51471159 ; 51671180)
WOS IDWOS:000405538800021
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22851
Collection多相复杂系统国家重点实验室
Affiliation1.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Lab Particle Sci & Engn, Beijing 100190, Peoples R China
3.Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Chen, Lingyun,Lan, Hao,Huang, Chuanbing,et al. Hot corrosion behavior of porous nickel-based alloys containing molybdenum in the presence of NaCl at 750 degrees C[J]. ENGINEERING FAILURE ANALYSIS,2017,79(SEP):245-252.
APA Chen, Lingyun,Lan, Hao,Huang, Chuanbing,Yang, Bin,Du, Lingzhong,&Zhang, Weigang.(2017).Hot corrosion behavior of porous nickel-based alloys containing molybdenum in the presence of NaCl at 750 degrees C.ENGINEERING FAILURE ANALYSIS,79(SEP),245-252.
MLA Chen, Lingyun,et al."Hot corrosion behavior of porous nickel-based alloys containing molybdenum in the presence of NaCl at 750 degrees C".ENGINEERING FAILURE ANALYSIS 79.SEP(2017):245-252.
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