Home

Citation: Lin Changjan, Tian Zhaowu. INVESTIGATION OF THE PITTING CORROSION OF 18-8 STAINLESS STEEL IN EARLY STAGE I. BY USING THE SMRE TECHNIQUE[J]. Acta Physico-Chimica Sinica, ;1987, 3(05): 479-484. doi: 10.3866/PKU.WHXB19870508 shu

INVESTIGATION OF THE PITTING CORROSION OF 18-8 STAINLESS STEEL IN EARLY STAGE I. BY USING THE SMRE TECHNIQUE

1.
Institute of Physical Chemistry; Xiamen University; Xiamen; Fujian; China

Received Date: 10 April 1986
Available Online: 15 October 1987

An improved scanning micro reference electrode (SMRE) technique controlled by micro-computer was used to study the pitting initiation in early stage of 18/8 stainless steel in chloride containning solution. It is shown that there exsists a critical potential E_r which characterizes the breakdown of passive film and initia- tion of the micropit corrosion in an early stage of pitting corrosion. The potential value of E_r is usually 100—400 mV less than the pitting potential E_p which corre- sponds to rapid increase of anodiccurrent in the polarization curve. The value of E_r is related closely to the surface states of specimens. On increasing the content of Cl~- and H~+ ions in solution, E_r will become more negative. when the potential is controlled in the vicinity of E_r, the micropit cannot grow to a macropit corrosion generally.
The new concept of “unstable micropitting” was suggested and the physical significance of the characteristic potential of E_r and E_p was expounded according to the experimental facts. Furthermore, the mechanism of local breakdown of passive film and pitting initiation of 18/8 stainless steel in chloride containing solution was also discussed in this paper.
1. [1]
  Zhenlin Zhou , Siyuan Chen , Yi Liu , Chengguo Hu , Faqiong Zhao . A New Program of Voltammetry Experiment Teaching Based on Laser-Scribed Graphene Electrode. University Chemistry, 2024, 39(2): 358-370. doi: 10.3866/PKU.DXHX202308049
2. [2]
  Xinxue Li . The Application of Reverse Thinking in Teaching of Boiling Point Elevation and Freezing Point Depression of Dilute Solutions in General Chemistry. University Chemistry, 2024, 39(11): 359-364. doi: 10.3866/PKU.DXHX202401075
3. [3]
  Bingliang Li , Yuying Han , Dianyang Li , Dandan Liu , Wenbin Shang . One-Step Synthesis of Benorilate Guided by Green Chemistry Principles and in vivo Dynamic Evaluation. University Chemistry, 2024, 39(6): 342-349. doi: 10.3866/PKU.DXHX202311070
4. [4]
  Xin Zhou , Zhi Zhang , Yun Yang , Shuijin Yang . A Study on the Enhancement of Photocatalytic Performance in C/Bi/Bi₂MoO₆ Composites by Ferroelectric Polarization: A Recommended Comprehensive Chemical Experiment. University Chemistry, 2024, 39(4): 296-304. doi: 10.3866/PKU.DXHX202310008
5. [5]
  Xiaomei Ning , Liang Zhan , Xiaosong Zhou , Jin Luo , Xunfu Zhou , Cuifen Luo . Preparation and Electro-Oxidation Performance of PtBi Supported on Carbon Cloth: A Recommended Comprehensive Chemical Experiment. University Chemistry, 2024, 39(11): 217-224. doi: 10.3866/PKU.DXHX202401085
6. [6]
  Miaomiao He , Zhiqing Ge , Qiang Zhou , Jiaqing He , Hong Gong , Lingling Li , Pingping Zhu , Wei Shao . Exploring the Fascinating Realm of Quantum Dots. University Chemistry, 2024, 39(6): 231-237. doi: 10.3866/PKU.DXHX202310040
7. [7]
  Qi Li , Pingan Li , Zetong Liu , Jiahui Zhang , Hao Zhang , Weilai Yu , Xianluo Hu . Fabricating Micro/Nanostructured Separators and Electrode Materials by Coaxial Electrospinning for Lithium-Ion Batteries: From Fundamentals to Applications. Acta Physico-Chimica Sinica, 2024, 40(10): 2311030-. doi: 10.3866/PKU.WHXB202311030
8. [8]
  Jianmin Hao , Ruifeng Wu , Ying Wang , Yijia Bai , Xuechuan Gao , Yuying Du . Reform and Practice of Physical Chemistry Course Based on Enhanced Process Assessment and Evaluation. University Chemistry, 2024, 39(8): 78-83. doi: 10.3866/PKU.DXHX202311103
9. [9]
  Fang Niu , Rong Li , Qiaolan Zhang . Analysis of Gas-Solid Adsorption Behavior in Resistive Gas Sensing Process. University Chemistry, 2024, 39(8): 142-148. doi: 10.3866/PKU.DXHX202311102
10. [10]
  Donghui PAN , Yuping XU , Xinyu WANG , Lizhen WANG , Junjie YAN , Dongjian SHI , Min YANG , Mingqing CHEN . Preparation and in vivo tracing of ⁶⁸Ga-labeled PM_2.5 mimetic particles for positron emission tomography imaging. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 669-676. doi: 10.11862/CJIC.20230468
11. [11]
  Gaofeng Zeng , Shuyu Liu , Manle Jiang , Yu Wang , Ping Xu , Lei Wang . Micro/Nanorobots for Pollution Detection and Toxic Removal. University Chemistry, 2024, 39(9): 229-234. doi: 10.12461/PKU.DXHX202311055
12. [12]
  Shuyong Zhang , Shu'e Song . Ideological and Political Case Design of Experiment of Corrosion and Protection Linking with National Major Projects. University Chemistry, 2024, 39(2): 57-60. doi: 10.3866/PKU.DXHX202304078
13. [13]
  Manman Jin , Zhiguo Lv , Qingtao Niu . Teaching Reformation and Case Study for “Chemical Process Development and Design” Based on “Just-in-Time” Dynamic and Accurate Matching Industrial Needs. University Chemistry, 2024, 39(11): 108-116. doi: 10.12461/PKU.DXHX202403030
14. [14]
  Siyi ZHONG , Xiaowen LIN , Jiaxin LIU , Ruyi WANG , Tao LIANG , Zhengfeng DENG , Ao ZHONG , Cuiping HAN . Targeting imaging and detection of ovarian cancer cells based on fluorescent magnetic carbon dots. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1483-1490. doi: 10.11862/CJIC.20240093
15. [15]
  Liangyu Gong , Jie Wang , Fengyu Du , Lubin Xu , Chuanli Ma , Shihai Yan , Zhuwei Song , Fuheng Liu , Xiuzhong Wang . Construction and Practice of “One-Point, Two-Lines and Three-Sides” Innovative Experimental Platform. University Chemistry, 2024, 39(4): 26-32. doi: 10.3866/PKU.DXHX202308023
16. [16]
  Jianjun Liu , Xue Yang , Chi Zhang , Xueyu Zhao , Zhiwei Zhang , Yongmei Chen , Qinghong Xu , Shao Jin . Preparation and Fluorescence Characterization of CdTe Semiconductor Quantum Dots. University Chemistry, 2024, 39(7): 307-315. doi: 10.3866/PKU.DXHX202311031
17. [17]
  Hongyan Feng , Weiwei Li . Reflections on the Safety of Chemical Science Popularization Activities. University Chemistry, 2024, 39(9): 379-384. doi: 10.12461/PKU.DXHX202404087
18. [18]
  Tong Zhou , Jun Li , Zitian Wen , Yitian Chen , Hailing Li , Zhonghong Gao , Wenyun Wang , Fang Liu , Qing Feng , Zhen Li , Jinyi Yang , Min Liu , Wei Qi . Experiment Improvement of “Redox Reaction and Electrode Potential” Based on the New Medical Concept. University Chemistry, 2024, 39(8): 276-281. doi: 10.3866/PKU.DXHX202401005
19. [19]
  Ji-Quan Liu , Huilin Guo , Ying Yang , Xiaohui Guo . Calculation and Discussion of Electrode Potentials in Redox Reactions of Water. University Chemistry, 2024, 39(8): 351-358. doi: 10.3866/PKU.DXHX202401031
20. [20]
  Li Jiang , Changzheng Chen , Yang Su , Hao Song , Yanmao Dong , Yan Yuan , Li Li . Electrochemical Synthesis of Polyaniline and Its Anticorrosive Application: Improvement and Innovative Design of the “Chemical Synthesis of Polyaniline” Experiment. University Chemistry, 2024, 39(3): 336-344. doi: 10.3866/PKU.DXHX202309002

Get Citation

PDF

XML

Metrics

PDF Downloads(1745)
Abstract views(2079)
HTML views(5)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return