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Corrosion Mechanism and Corrosion Model of Mg-Y Alloy in NaCl Solution 被引量:3
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作者 徐宏 WU Zhiquan +6 位作者 WANG Xiaoru 张新 REN Jiping SHI Yang WANG Zepu WANG Liwei LIU Changhua 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第5期1048-1062,共15页
Corrosion of Mg–Y alloy was studied using electrochemical evaluations, immersion tests and SEM observations. Corrosion mechanisms of Mg-(0.25 and 2.5) Y alloy and Mg-(5, 8, and 15) Y alloy were uniform corrosion ... Corrosion of Mg–Y alloy was studied using electrochemical evaluations, immersion tests and SEM observations. Corrosion mechanisms of Mg-(0.25 and 2.5) Y alloy and Mg-(5, 8, and 15) Y alloy were uniform corrosion and pitting corrosion respectively, and the content of Mg_(24)Y_5 phases determined its effect acting as cathode to accelerate the corrosion or corrosion barrier to inhibit the corrosion. Corrosion resistance of Mg-(0.25, 2.5, 5, 8, and 15) Y alloys was as follows: Rt(Mg-0.25Y) 〈 Rt(Mg-8Y) 〈 Rt(Mg-15Y) 〈 Rt(Mg-5Y) 〈 Rt(Mg-2.5Y). Y could significantly improve the corrosion resistance of the Mg-Y alloy, but the excess of Y deteriorated the corrosion resistance of the Mg-Y alloy. The optimum content of Y in the studied alloys was 2.5%. 展开更多
关键词 Mg-Y corrosion electrochemical weight loss rate
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Erosion–corrosion behavior of austenitic cast iron in an acidic slurry medium 被引量:1
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作者 Ke Yang Lan Sun +1 位作者 Yu-zhen Liu Hong-yuan Fan 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2015年第6期598-603,共6页
A series of austenitic cast iron samples with different compositions were cast and a part of nickel in the samples was replaced by manganese for economic reason. Erosion–corrosion tests were conducted under 2wt% sulf... A series of austenitic cast iron samples with different compositions were cast and a part of nickel in the samples was replaced by manganese for economic reason. Erosion–corrosion tests were conducted under 2wt% sulfuric acid and 15wt% quartz sand. The results show that the matrix of cast irons remains austenite after a portion of nickel is replaced with manganese.(Fe,Cr)3C is a common phase in the cast irons, and nickel is the main alloying element in high-nickel cast iron; whereas,(Fe,Mn)3C is observed with the increased manganese content in low-nickel cast iron. Under erosion–corrosion tests, the weight-loss rates of the cast irons increase with increasing time. Wear plays a more important role than corrosion in determining the weight loss. It is indicated that the processes of weight loss for the cast irons with high and low nickel contents are different. The erosion resistance of the cast iron containing 7.29wt% nickel and 6.94wt% manganese is equivalent to that of the cast iron containing 13.29wt% nickel. 展开更多
关键词 cast irons erosion corrosion weight loss acidic environment
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