|
|
|
| Stress Corrosion Cracking of 16MnR Steel in FCCU Regeneration Environments |
XING Yunying, LIU Zhiyong( ), DONG Chaofang, LI Xiaogang |
| Corrosion and Protection Center University of Science and Technology Beijing, Beijing 100083, China |
|
|
|
|
Abstract The stress corrosion behavior of the weld seam and base metal of 16MnR steel in solution of HNO3-H2SO4-H2O, one of the typical environments of FCCU regenerator, was investigated using U-bend specimen immersion test and electrochemical polarization curves. The results show that the weld seam of 16MnR is more sensitive to nitrate stress corrosion cracking than base metal, its mechanism is anodic dissolution. Both the introduction of sulfate and the slightly reduction of pH can destroy the protective film on 16MnR steel, and increase the corrosion susceptibility of its weld seam. However, when the pH of solution is less than 2, the material is in active state, resulting in a serious of uniform corrosion. Besides the effective methods to slow down the stress corrosion of materials in catalytic cracking regenerator are analyzed in this article.
|
|
Received: 06 June 2013
|
|
|
About author: null
邢云颖,1988年生,女,硕士生,研究方向为材料的腐蚀与防护 |
| [1] |
Fu C H, Si Y X. Analysis of root causes of equipment cracking in FCCU regenerator system and counter measures[J]. Corros. Prot. Petrochem. Ind., 2010, 27(6): 31-64
|
|
(付春辉, 司元祥. 催化裂化装置再生系统应力腐蚀开裂原因[J]. 石油化工腐蚀与防护, 2010, 27(6): 31-64)
|
| [2] |
Parkins R N. Mechanical aspect of stress corrosion cracking of carbon steels in petroleum refining industry [A]. Proceeding of International Conference on Stress Corrosion Cracking and Hydrogen Embrittlement of Iron Base Alloys [C]. Houston: NACE, 1977: 526-533
|
| [3] |
Gu Y Z. Prevention of stress corrosion cracking (SCC) of equipment in FCCU regeneration system[J]. Corros. Prot. Petrochem. Ind., 2010, 27(5): 17-19
|
|
(顾月章. 催化裂化再生系统应力腐蚀开裂的预防[J]. 石油化工腐蚀与防护, 2010, 27(5): 17-19)
|
| [4] |
Galvele J R. Recent developments in the surface-mobility stress-corrosion-cracking mechanism[J]. Electrochim. Acta, 2000, 45(21): 3537-3541
|
| [5] |
Pollard R E. Symposium stress corrosion cracking of metals[J]. ASTM, 1944: 443-450
|
| [6] |
Zhang L, Li X G, Du C W, et al. Progress in study of factors affecting stress corrosion cracking of pipeline steels[J]. Corros. Sci. Prot. Technol., 2009, 21(1): 63-65
|
|
(张亮, 李晓刚, 杜翠薇等. 管线钢应力腐蚀影响因素的研究进展[J]. 腐蚀科学与防护技术, 2009, 21(1): 63-65)
|
| [7] |
Wu Y S. SCC diagram for low alloy steel-nitrate aqueous solution system[J]. J. Univ. Sci. Technol. Beijing, 1990, 12(2): 131-136
|
|
(吴荫顺. 低合金钢-硝酸盐溶液体系SCC图[J]. 北京科技大学学报, 1990, 12(2): 131-136)
|
| [8] |
Parkins R N. Mechanism and characteristic of stress corrosion cracking[A]. Proceeding of International Conference on Stress Corrosion Cracking and Hydrogen Embrittlement of Iron Base Alloys [C]. Houston: NACE, 1977: 531-542
|
| [9] |
Du A H, Long J M, Pei Z H, et al. Investigation of stress corrosion cracking of 7xxx series aluminum alloys[J]. J. Chin. Soc. Corros. Prot., 2008, 28(4): 251-256
|
|
(杜爱华, 龙晋明, 裴中和等. 高强铝合金应力腐蚀研究进展[J]. 中国腐蚀与防护学报, 2008, 28(4): 251-256)
|
| [10] |
Rossenhain G D, Lockington N A. Research of stress corrosion cracking[J]. Corrosion, 1990, 5: 167-169
|
| [11] |
Meng Q, Yan H, Huang W, et al. Corrosion and protection of catalytic cracking unit[J]. Fine Chem. Intermed., 2011, 41(1): 8-10
|
|
(孟邱, 闫慧, 黄炜等. 催化裂化装置的腐蚀与防护[J]. 精细化工中间体, 2011, 41(1): 8-10)
|
| [12] |
Li X G, Chen H, Dong C F. Thermal healing of hydrogen attacked cracks in steels [A]. The 2nd China International Corrosion Control Conference [C]. Beijing, 2002: 41-49
|
| [13] |
Zhou Z H. Deterrents to long-period operation of catalytic cracking units and solution[J]. Sino-Global. Energy, 2012, 17(6): 73-77
|
|
(周志航. 催化裂化装置长周期运行的问题及对策[J]. 中外能源, 2012, 17(6): 73-77)
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
