IMR OpenIR
Corrosion behavior of ferritic stainless steel with 15wt% chromium for the automobile exhaust system
Alternative TitleCorrosion behavior of ferritic stainless steel with 15wt% chromium for the automobile exhaust system
Li Huabing; Jiang Zhouhua; Feng Hao; Zhu Hongchun; Sun Binhan; Li Zhen
2013
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume20Issue:9Pages:850-860
AbstractThe effect of chloride ion concentration, pH value, and grain size on the pitting corrosion resistance of a new ferritic stainless steel with 15wt% Cr was investigated using the anodic polarization method. The semiconducting properties of passive films with different chloride ion concentrations were performed using capacitance measurement and Mott-Schottky analysis methods. The aging precipitation and intergranular corrosion behavior were evaluated at 400-900A degrees C. It is found that the pitting potential decreases when the grain size increases. With the increase in chloride ion concentration, the doping density and the flat-bland potential increase but the thickness of the space charge layer decreases. The pitting corrosion resistance increases rapidly with the decrease in pH value. Precipitants is identified as Nb(C,N) and NbC, rather than Cr-carbide. The intergranular corrosion is attributed to the synergistic effects of Nb(C,N) and NbC precipitates and Cr segregation adjacent to the precipitates.
Other AbstractThe effect of chloride ion concentration, pH value, and grain size on the pitting corrosion resistance of a new ferritic stainless steel with 15wt% Cr was investigated using the anodic polarization method. The semiconducting properties of passive films with different chloride ion concentrations were performed using capacitance measurement and Mott-Schottky analysis methods. The aging precipitation and intergranular corrosion behavior were evaluated at 400–900°C. It is found that the pitting potential decreases when the grain size increases. With the increase in chloride ion concentration, the doping density and the flat-bland potential increase but the thickness of the space charge layer decreases. The pitting corrosion resistance increases rapidly with the decrease in pH value. Precipitants is identified as Nb(C,N) and NbC, rather than Cr-carbide. The intergranular corrosion is attributed to the synergistic effects of Nb(C,N) and NbC precipitates and Cr segregation adjacent to the precipitates.
KeywordSEMICONDUCTING PROPERTIES PASSIVE FILM CHLORIDE ferritic stainless steel corrosion resistance pitting chlorides intergranular corrosion grain size
Indexed ByCSCD
Language英语
Funding Project[Program for Liaoning Innovative Research Team in University] ; [Fundamental Research Funds for the Central Universities] ; [General Scientific Research Project of the Department of Education of Liaoning Province, China]
CSCD IDCSCD:4932755
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152451
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Li Huabing,Jiang Zhouhua,Feng Hao,et al. Corrosion behavior of ferritic stainless steel with 15wt% chromium for the automobile exhaust system[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2013,20(9):850-860.
APA Li Huabing,Jiang Zhouhua,Feng Hao,Zhu Hongchun,Sun Binhan,&Li Zhen.(2013).Corrosion behavior of ferritic stainless steel with 15wt% chromium for the automobile exhaust system.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,20(9),850-860.
MLA Li Huabing,et al."Corrosion behavior of ferritic stainless steel with 15wt% chromium for the automobile exhaust system".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 20.9(2013):850-860.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li Huabing]'s Articles
[Jiang Zhouhua]'s Articles
[Feng Hao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li Huabing]'s Articles
[Jiang Zhouhua]'s Articles
[Feng Hao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li Huabing]'s Articles
[Jiang Zhouhua]'s Articles
[Feng Hao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.