TiN夹杂物对超纯铁素体不锈钢点蚀的影响
Effect of TiN Inclusion on Pitting of an Ultra-Pure Ferritic Stainless Steel
摘 要
通过电化学试验和浸泡试验，利用扫描电镜（SEM）、透射电镜（TEM）和原子力显微镜（AFM）表征了超纯铁素体不锈钢的点蚀坑尺寸、TiN夹杂物的微观结构以及TiN与基体的电势差和高度差，分析了TiN对试样点蚀发生和扩展的作用机理。结果表明：试样的腐蚀电位和点蚀电位分别为94 mV和353 mV，点蚀坑的平均宽度和深度分别为203.6 μm和114.74 μm，TiN夹杂物以单个或团簇的形式存在；TiN比基体的电势高65 mV，点蚀优先在TiN与基体界面处发生，基体成为阳极发生微电偶腐蚀；由“孔内活化-孔外钝化”腐蚀电池引起的自催化过程加速了点蚀的扩展。
TiN
电势差
点蚀
ultra-pure ferritic stainless steel
TiN
potential difference
pitting
Abstract
Through electrochemical test and immersion test, using scanning electron microsopy (SEM), transmission electron microscope (TEM) and atomic force microscope (AFM) to characterize the size of pitting pits, the micro morphology of TiN inclusion, and the potential difference and height difference between TiN and substrate of an ultra-pure ferritic stainless steel. And the mechanism of TiN on the occurrence and expansion of pitting corrosion of the sample was analyzed. The results showed that corrosion potential and pitting potential of the sample were 94 mV and 353 mV, respectively. The average width and depth of pitting pits were 203.6 μm and 114.74 μm, respectively. TiN inclusion existed in the form of single or cluster. The potential of TiN was 65 mV higher than that of the substrate. The pitting corrosion occurred preferentially at the interface between TiN and substrate, and the substrate became the anode for micro galvanic corrosion. The autocatalytic process caused by “activation in the hole-passivation out of the hole” accelerated the expansion of pitting corrosion.
中图分类号 TG172 DOI 10.11973/fsyfh-202109005
所属栏目 试验研究
基金项目 山西省科技重大专项（20191102006）；山西省科技计划揭榜招标项目（20201101011）
收稿日期 2021/4/22
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: NAN Hai. Effect of TiN Inclusion on Pitting of an Ultra-Pure Ferritic Stainless Steel[J]. Corrosion & Protection, 2021, 42(9): 22
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】YAN H T,BI H Y,LI X,et al. Microstructure and texture of Nb + Ti stabilized ferritic stainless steel[J]. Materials Characterization,2008,59(12):1741-1746.
【2】LIU Z Y,GAO F,JIANG L Z,et al. The correlation between yielding behavior and precipitation in ultra purified ferritic stainless steels[J]. Materials Science and Engineering:A,2010,527(16/17):3800-3806.
【3】才筝,吴玮巍. 合金元素对铁素体不锈钢耐应力腐蚀开裂性能的影响[J]. 宝钢技术,2017(3):29-35.
【4】CÍZEK J,JANECEK M,KRAJNÁK T,et al. Structural characterization of ultrafine-grained interstitial-free steel prepared by severe plastic deformation[J]. Acta Materialia,2016,105:258-272.
【5】MICHELIC S K,LODER D,REIP T,et al. Characterization of TiN,TiC and Ti(C,N) in titanium-alloyed ferritic chromium steels focusing on the significance of different particle morphologies[J]. Materials Characterization,2015,100:61-67.
【6】胡潘,毛宏焕,杨弋涛. 碳含量对430铁素体不锈钢耐晶间腐蚀性能的影响[J]. 腐蚀与防护,2016,37(12):956-960.
【7】GAO F,LIU Z Y,LIU H T,et al. Toughness under different rolling processes in ultra purified Fe-17 wt% Cr alloy steels[J]. Journal of Alloys and Compounds,2013,567:141-147.
【8】KIM J K,KIM Y H,LEE J S,et al. Effect of chromium content on intergranular corrosion and precipitation of Ti-stabilized ferritic stainless steels[J]. Corrosion Science,2010,52(5):1847-1852.
【9】NINGSHEN S,SAKAIRI M,SUZUKI K,et al. The surface characterization and corrosion resistance of 11% Cr ferritic/martensitic and 9%-15% Cr ODS steels for nuclear fuel reprocessing application[J]. Journal of Solid State Electrochemistry,2014,18(2):411-425.
【10】ZHANG Z Q,JING H Y,XU L Y,et al. Effect of post-weld heat treatment on microstructure evolution and pitting corrosion resistance of electron beam-welded duplex stainless steel[J]. Corrosion Science,2018,141:30-45.
【11】党杰,周鹏,史洪源. Nb、Ti对低铬铁素体不锈钢腐蚀性能的影响[J]. 钢铁钒钛,2020,41(2):147-150.
【12】孔令真,詹宇鹏,徐一慧,等. 硝酸中不锈钢焊缝附近不同区域的电化学行为[J]. 腐蚀与防护,2018,39(2):112-116.
【13】YOU X M,JIANG Z H,LI H B. Ultra-pure ferritic stainless steels-grade,refining operation,and application[J]. Journal of Iron and Steel Research,International,2007,14(4):24-30.
【14】CAVAZOS J L. Characterization of precipitates formed in a ferritic stainless steel stabilized with Zr and Ti additions[J]. Materials Characterization,2006,56(2):96-101.
【15】DE ALMEIDA REIS TANURE L P,DE ALCÂNT-ARA C M,DE OLIVEIRA T R,et al. Comparison of microstructure and mechanical behavior of the ferritic stainless steels ASTM 430 stabilized with niobium and ASTM 439 stabilized with niobium and titanium[J]. Materials Science Forum,2016,879:1651-1655.
【16】TIRUMALASETTY G K,VAN HUIS M A,FANG C M,et al. Characterization of NbC and (Nb,Ti)N nanoprecipitates in TRIP assisted multiphase steels[J]. Acta Materialia,2011,59(19):7406-7415.
【17】NAKAJIMA K,HASEGAWA H,KHUMKOA S,et al. Effect of catalyst on heterogeneous nucleation in Fe-Ni-Cr alloys[J]. ISIJ International,2006,46(6):801-806.
【18】SHI C X,CHENG G G,LI Z J,et al. Solidification structure refining of 430 ferrite stainless steel with TiN nucleation[J]. Journal of Iron and Steel Research,International,2008,15(3):57-60.
【19】LI X W,CAI Q Z,ZHAO B Y,et al. Effect of nano TiN/Ti refiner addition content on the microstructure and properties of as-cast Al-Zn-Mg-Cu alloy[J]. Journal of Alloys and Compounds,2016,675:201-210.
【20】李艺萌,林立,戴武帅,等. GW133镁合金在3.5% NaCl溶液的微电偶腐蚀机制研究[C]//2018年全国腐蚀电化学及测试方法学术交流会论文集.北京:[出版者不详],2018.
【21】WANG J,CUI Y S,BAI J G,et al. Effect of B addition on the microstructure and corrosion resistance of S31254 super austenitic stainless steels after solid solution treatment[J]. Materials Letters,2019,252:60-63.
【22】LIU L,LI Y,WANG F H. Influence of nanocrystallization on passive behavior of Ni-based superalloy in acidic solutions[J]. Electrochimica Acta,2007,52(7):2392-2400.
【23】HOAR T P,MEARS D C,ROTHWELL G P. The relationships between anodic passivity,brightening and pitting[J]. Corrosion Science,1965,5(4):279-289.
【2】LIU Z Y,GAO F,JIANG L Z,et al. The correlation between yielding behavior and precipitation in ultra purified ferritic stainless steels[J]. Materials Science and Engineering:A,2010,527(16/17):3800-3806.
【3】才筝,吴玮巍. 合金元素对铁素体不锈钢耐应力腐蚀开裂性能的影响[J]. 宝钢技术,2017(3):29-35.
【4】CÍZEK J,JANECEK M,KRAJNÁK T,et al. Structural characterization of ultrafine-grained interstitial-free steel prepared by severe plastic deformation[J]. Acta Materialia,2016,105:258-272.
【5】MICHELIC S K,LODER D,REIP T,et al. Characterization of TiN,TiC and Ti(C,N) in titanium-alloyed ferritic chromium steels focusing on the significance of different particle morphologies[J]. Materials Characterization,2015,100:61-67.
【6】胡潘,毛宏焕,杨弋涛. 碳含量对430铁素体不锈钢耐晶间腐蚀性能的影响[J]. 腐蚀与防护,2016,37(12):956-960.
【7】GAO F,LIU Z Y,LIU H T,et al. Toughness under different rolling processes in ultra purified Fe-17 wt% Cr alloy steels[J]. Journal of Alloys and Compounds,2013,567:141-147.
【8】KIM J K,KIM Y H,LEE J S,et al. Effect of chromium content on intergranular corrosion and precipitation of Ti-stabilized ferritic stainless steels[J]. Corrosion Science,2010,52(5):1847-1852.
【9】NINGSHEN S,SAKAIRI M,SUZUKI K,et al. The surface characterization and corrosion resistance of 11% Cr ferritic/martensitic and 9%-15% Cr ODS steels for nuclear fuel reprocessing application[J]. Journal of Solid State Electrochemistry,2014,18(2):411-425.
【10】ZHANG Z Q,JING H Y,XU L Y,et al. Effect of post-weld heat treatment on microstructure evolution and pitting corrosion resistance of electron beam-welded duplex stainless steel[J]. Corrosion Science,2018,141:30-45.
【11】党杰,周鹏,史洪源. Nb、Ti对低铬铁素体不锈钢腐蚀性能的影响[J]. 钢铁钒钛,2020,41(2):147-150.
【12】孔令真,詹宇鹏,徐一慧,等. 硝酸中不锈钢焊缝附近不同区域的电化学行为[J]. 腐蚀与防护,2018,39(2):112-116.
【13】YOU X M,JIANG Z H,LI H B. Ultra-pure ferritic stainless steels-grade,refining operation,and application[J]. Journal of Iron and Steel Research,International,2007,14(4):24-30.
【14】CAVAZOS J L. Characterization of precipitates formed in a ferritic stainless steel stabilized with Zr and Ti additions[J]. Materials Characterization,2006,56(2):96-101.
【15】DE ALMEIDA REIS TANURE L P,DE ALCÂNT-ARA C M,DE OLIVEIRA T R,et al. Comparison of microstructure and mechanical behavior of the ferritic stainless steels ASTM 430 stabilized with niobium and ASTM 439 stabilized with niobium and titanium[J]. Materials Science Forum,2016,879:1651-1655.
【16】TIRUMALASETTY G K,VAN HUIS M A,FANG C M,et al. Characterization of NbC and (Nb,Ti)N nanoprecipitates in TRIP assisted multiphase steels[J]. Acta Materialia,2011,59(19):7406-7415.
【17】NAKAJIMA K,HASEGAWA H,KHUMKOA S,et al. Effect of catalyst on heterogeneous nucleation in Fe-Ni-Cr alloys[J]. ISIJ International,2006,46(6):801-806.
【18】SHI C X,CHENG G G,LI Z J,et al. Solidification structure refining of 430 ferrite stainless steel with TiN nucleation[J]. Journal of Iron and Steel Research,International,2008,15(3):57-60.
【19】LI X W,CAI Q Z,ZHAO B Y,et al. Effect of nano TiN/Ti refiner addition content on the microstructure and properties of as-cast Al-Zn-Mg-Cu alloy[J]. Journal of Alloys and Compounds,2016,675:201-210.
【20】李艺萌,林立,戴武帅,等. GW133镁合金在3.5% NaCl溶液的微电偶腐蚀机制研究[C]//2018年全国腐蚀电化学及测试方法学术交流会论文集.北京:[出版者不详],2018.
【21】WANG J,CUI Y S,BAI J G,et al. Effect of B addition on the microstructure and corrosion resistance of S31254 super austenitic stainless steels after solid solution treatment[J]. Materials Letters,2019,252:60-63.
【22】LIU L,LI Y,WANG F H. Influence of nanocrystallization on passive behavior of Ni-based superalloy in acidic solutions[J]. Electrochimica Acta,2007,52(7):2392-2400.
【23】HOAR T P,MEARS D C,ROTHWELL G P. The relationships between anodic passivity,brightening and pitting[J]. Corrosion Science,1965,5(4):279-289.
相关信息
