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腐蚀金属电极的电化学频域测量研究进展──金属腐蚀与防护研究所电化学研究介绍之一 被引量:4
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作者 曹楚南 《电化学》 CAS CSCD 1996年第1期1-8,共8页
腐蚀金属电极的电化学频域测量研究进展──金属腐蚀与防护研究所电化学研究介绍之一曹楚南(金属腐蚀与防护国家重点实验室,金属腐蚀与防护研究所,沈阳110015)腐蚀电化学是研究与腐蚀有关的电化学问题,具体的研究对象为腐蚀... 腐蚀金属电极的电化学频域测量研究进展──金属腐蚀与防护研究所电化学研究介绍之一曹楚南(金属腐蚀与防护国家重点实验室,金属腐蚀与防护研究所,沈阳110015)腐蚀电化学是研究与腐蚀有关的电化学问题,具体的研究对象为腐蚀金属电极。虽然电化学中的基本原理和... 展开更多
关键词 腐蚀金属电极 EIS 腐蚀电化学
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Corrosion and electrochemical behaviors of 7A09 Al-Zn-Mg-Cu alloy in chloride aqueous solution 被引量:7
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作者 周堃 王彬 +1 位作者 赵宇 刘杰 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第8期2509-2515,共7页
The corrosion and electrochemical behaviors of 7A09 Al?Zn?Mg?Cu alloy were investigated in 3.5% NaCl (mass fraction) solution using complementary techniques such as scanning electron microscopy (SEM), metallogr... The corrosion and electrochemical behaviors of 7A09 Al?Zn?Mg?Cu alloy were investigated in 3.5% NaCl (mass fraction) solution using complementary techniques such as scanning electron microscopy (SEM), metallographic microscopy and electrochemical measurements. The results show that both pitting corrosion from or around the intermetallic particles and intergranular corrosion are observed after the immersion test due to the inhomogeneous nature of the microstructure of the 7A09 alloy. The preferential dissolution of the anodic Cu-depleted zone along grain boundaries is believed to be the possible cause of intergranular corrosion. The passivation and depassivation of this alloy show significant dependence of immersion time, owing to the formation and dissolution of various passive films on the sample surfaces. Furthermore, the corrosion process and corrosion mechanism were also analyzed. 展开更多
关键词 7A09 Al-Zn-Mg-Cu alloy intergranular corrosion intermetallic particles electrochemical impedance spectroscopy POLARIZATION
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Effect of Mo_2C on electrochemical corrosion behavior of Ti(C,N)-based cermets 被引量:4
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作者 董广彪 熊计 +3 位作者 杨梅 郭智兴 万维财 易成红 《Journal of Central South University》 SCIE EI CAS 2013年第4期851-858,共8页
The electrochemical corrosion behavior of Ti(C,N)-based cermets with different Mo2C additions was investigated in freely aerated 10% H2SO4 and potentiodynamic polarization of all the materials was conducted from -0.... The electrochemical corrosion behavior of Ti(C,N)-based cermets with different Mo2C additions was investigated in freely aerated 10% H2SO4 and potentiodynamic polarization of all the materials was conducted from -0.5 to 1.5 V. There are two passive regions for all polarization curves. The first should be attributed to passive film formation due to Ti(C,N), while the second may be due to the presence of Ni. Corrosion current density increases with M02C content increasing, from 2.06×10^-3 to 6.70×10^-3 mA/cm2. It is indicated that the corrosion resistance of Ti(C,N)-based cermets decreases with the increase of Mo2C addition. A skeleton of Ti(C,N) gains is observed after dissolution of Ni. The inner rim of cermets, rich in Mo2C, is corroded along with Ni binder and is more serious with the increase of Mo2C content. The secondary carbide Mo2C can be oxidized and dissolved in sulphuric acid. 展开更多
关键词 Ti(C N)-based cermets Mo2C electrochemical corrosion
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Applying ellipsometry to studying the effect of two kinds of rare earth metal salts on anodizing aluminum alloy
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作者 HONGQuan QIANYing LILingjie ZHANGShengtao 《Journal of Chongqing University》 CAS 2004年第1期69-73,共5页
The effects of rare earth metal salts (REMs), cerium(IV) salt and lanthanum (III) salt, on the property of anodized coating of LD10 aluminum alloy are studied by corrosion tests including neutral salt spray test and c... The effects of rare earth metal salts (REMs), cerium(IV) salt and lanthanum (III) salt, on the property of anodized coating of LD10 aluminum alloy are studied by corrosion tests including neutral salt spray test and copper accelerated acetic acid immersion test, polarization curves measurement, energy dispersion analyzer of X-Ray(EDAX) analysis, and in situ ellipsometry. The results show that the addition of either of the two REMs in anodizing solution hardly changes the composition of an anodized coating, while increases the thickness of barrier part and reduces the porosity of porous part, which contributed to the improvement of the corrosion resistance of the anodized coating. The results also demonstrate that the effect of cerium salt was better than that of lanthanum salt. 展开更多
关键词 ELLIPSOMETRY rare earth metal salts ANODIZING aluminum alloy
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