利用极化法、电位时间曲线、浸泡实验等研究等径角挤压(Equal Channel Angular Pressing,ECAP)制备的块体超细晶铜和退火态粗晶铜在0.5mol/L NaCl溶液中的腐蚀行为,对比研究ECAP挤压前后腐蚀行为的变化.结果表明:通过ECAP制备的超细晶Cu的腐蚀电流低于粗晶Cu,自腐蚀电位Ecorr比粗晶铜高100mV左右,表明超细晶Cu的耐蚀性比粗晶Cu要好.通过电化学分析和微观腐蚀形貌,超细晶材料的腐蚀表面非常光滑,腐蚀较为均匀,粗晶材料的局部腐蚀现象十分严重.
参考文献
| [1] | P.L. Sun;P.W. Kao;C.P. Chang .High angle boundary formation by grain subdivision in equal channel angular extrusion[J].Scripta materialia,2004(6):565-570. |
| [2] | 罗雷,杨冠军,王庆娟,刘长瑞,毛小南.等径角挤压超细晶纯铜的耐腐蚀性能[J].机械工程材料,2010(08):50-52. |
| [3] | Wang LC.;Li DY. .Mechanical, electrochemical and tribological properties of nanocrystalline surface of brass produced by sandblasting and annealing[J].Surface & Coatings Technology,2003(2/3):188-196. |
| [4] | Vinogradov A.;Miyamoto H.;Mimaki T.;Hashimoto S. .Corrosion, stress corrosion cracking and fatigue of ultra-fine grain copper fabricated by severe plastic deformation[J].Annales de Chimie-Science des Materiaux,2002(3):65-75. |
| [5] | A. Balyanov;J. Kutnyakova;N. A. Amirkhanova;V. V. Stolyarov;R. Z. Valiev;X. Z. Liao;Y. H. Zhao;Y. B. Jiang;H. F. Xu;T. C. Lowe .Corrosion resistance of ultra fine-grained Ti[J].Scripta materialia,2004(3):225-229. |
| [6] | Min-Kyong Chung;Yoon-Seok Choi;Jung-Gu Kim .Effect of the number of ECAP pass time on the electrochemical properties of 1050 Al alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(2):282-291. |
| [7] | 张宝宏;从文博;杨萍.金属电化学腐蚀与防护[M].北京:化学工业出版社,2005 |
| [8] | 卢琳,李晓刚,杜翠薇,董超芳,高谨.铜在0.5 mol/L NaCl溶液中的缝隙腐蚀现象探讨[J].装备环境工程,2007(03):31-34. |
| [9] | NUNEZ L;REGUERA E;CORVO F et al.Corrosion of copper in seawater and its aerosols in a tropical island[J].Corrosion Sci ence,2005,47(02):461-484. |
| [10] | 赵春梅 .模拟苦咸水中铜腐蚀行为的研究[D].北京化工大学,2000. |
| [11] | Hiroyuki Miyamoto;Kohei Harada;Takuro Mimaki;Alexei Vinogradov;Satoshi Hashimoto .Corrosion of ultra-fine grained copper fabricated by equal-channel angular pressing[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(5):1215-1220. |
| [12] | ROFAGHA R;LANGER R;EL-SHERIK A M et al.The corrosion behavior of nanocrystalline nickel[J].Scripta Metallurgica et Materialia,1991,25(12):2867-2872. |
| [13] | S. H. Kim;U. Erb;K. T. Aust .The Corrosion Behavior Of Nanocrystalline Electrodeposits[J].Plating & Surface Finishing,2004(5):68-70. |
| [14] | KIM S H;FRANKEN T;HIBBARD G D et al.Effect of pH on the corrosion behavior of nanocrystalline cobalt[J].Journal of Metastable and Nanocrystalline Materials,2003,15-16:643-648. |
| [15] | PALUMBO G;THORPE S J;AUST K T .On the contribution of triple junctions to the structure and properties of nanocrystalline materials[J].Scripta Metallurgica et Materialia,1990,24(07):1347-1350. |
| [16] | WANG N;PALUMBO G;WANG Z et al.On the persistence of four-fold triple line nodes in nanostructured materials[J].Scripta Metallurgica et Materialia,1993,28(02):253-256. |
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