| Intergranular corrosion behavior of high nitrogen austenitic stainless steel | |
| Alternative Title | Intergranular corrosion behavior of high nitrogen austenitic stainless steel |
| Li Huabing; Jiang Zhouhua; Zhang Zurui; Cao Yang; Yang Yan | |
| 2009 | |
| Source Publication | INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
 |
| ISSN | 1674-4799 |
| Volume | 16Issue:6Pages:654-660 |
| Abstract | The intergranular corrosion (IGC) behavior of high nitrogen austenitic stainless steel (HNSS) sensitization treated at 650-950 degrees C was investigated by the double loop electrochemical potentiodynamic reactivation (DL-EPR) method. The effects of the electrolytes, scan rate, sensitizing temperature on the susceptibility to IGC of HNSS were examined. The results show that the addition of NaCl is an effective way to improve the formation of the cracking of a passive film in chromium-depleted zones during the reactivation scan. Decreasing the scan rate exhibits an obvious effect on the breakdown of the passive film. A solution with 2 mol/L H(2)SO(4)+1 mol/L NaCl+0.01 mol/L KSCN is suitable to check the susceptibility to IGC of HNSS at a sensitizing temperature of 650-950 degrees C at a suitable scan rate of 1.667 mV/s. Chromium depletion of HNSS is attributed to the precipitation of Cr(2)N which results in the susceptibility to IGC. The synergistic effect of Mo and N is suggested to play an important role in stabilizing the passive film to prevent the attack of IGC. |
| Other Abstract | The intergranular corrosion (IGC) behavior of high nitrogen austenitic stainless steel(HNSS) sensitization treated at 650-950℃ was investigated by the double loop electrochemical potentiodynamic reactivation(DL-EPR) method.The effects of the electrolytes,scan rate,sensitizing temperature on the susceptibility to IGC of HNSS were examined. The results show that the addition of NaCl is an effective way to improve the formation of the cracking of a passive film in chromium-depleted zones during the reactivation scan. Decreasing the scan rate exhibits an obvious effect on the breakdown of the passive film. A solution with 2 mol/L H2_SO_4+1 mol/L NaCl+0.01 mol/L KSCN is suitable to check the susceptibility to IGC of HNSS at a sensitizing temperature of 650-950℃ at a suitable scan rate of 1.667 mV/s. Chromium depletion of HNSS is attributed to the precipitation of Cr_2N which results in the susceptibility to IGC. The synergistic effect of Mo and N is suggested to play an important role in stabilizing the passive film to prevent the attack of IGC. |
| Keyword | POTENTIOKINETIC REACTIVATION TEST AISI 316L STEEL SUSCEPTIBILITY SENSITIZATION ALLOY-600 intergranular corrosion high nitrogen austenitic stainless steel sensitization passive film chromium depletion |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] ; [Baosteel Group Corporation] |
| CSCD ID | CSCD:3786406 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141852 |
| 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,Zhang Zurui,et al. Intergranular corrosion behavior of high nitrogen austenitic stainless steel[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2009,16(6):654-660. |
| APA | Li Huabing,Jiang Zhouhua,Zhang Zurui,Cao Yang,&Yang Yan.(2009).Intergranular corrosion behavior of high nitrogen austenitic stainless steel.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,16(6),654-660. |
| MLA | Li Huabing,et al."Intergranular corrosion behavior of high nitrogen austenitic stainless steel".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 16.6(2009):654-660. |
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