STUDY OF MIXED RARE EARTH METAL (REM) CONVERSION COATING ON ALUMINUM ALLOY LY12

Abstract

Abstract: The process of mixed rare earth metal (REM) conversion coating on aluminum alloy LY12 (2024) is introduced in this paper. The corrosion resistance of mixed REM conversion coating is examined by weight loss test and electrochemical method. The results show that mixed REM conversion coating increases the corrosion resistance of the alloy surface. Examination of scanning electron microscope (SEM) shows that the coating exhibits honeycomb-like feature. X-ray diffraction (XRD) analysis reveals that the coating is amorphous. The result of X-ray photoelectron spectroscopy (XPS) indicates that mixed REM conversion coating consists predominantly of Ce and O. The contents of other rare earth elements (La, Pr) are relatively low.

Key words: mixed rare earth metal conversion coating, corrosion resistance, morphology, amorphous, composition

X.W. Yu and C.N. Cao (State Key Laboratory for Corrosion and Protection, Institute of Corrosion and Protection of Metals, The Chinese Academy of Science, Shenyang 110015, China) D.R. Zhou and Z.D. Yin (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China). STUDY OF MIXED RARE EARTH METAL (REM) CONVERSION COATING ON ALUMINUM ALLOY LY12[J]. Acta Metallurgica Sinica (English Letters), 2000, 13(5): 1034-1038.

[1]	Zheng-Zheng Yin, Zhao-Qi Zhang, Xiu-Juan Tian, Zhen-Lin Wang, Rong-Chang Zeng. Corrosion Resistance and Durability of Superhydrophobic Coating on AZ31 Mg Alloy via One-Step Electrodeposition [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 25-38.
[2]	Dong-Dong Gu, Jian Peng, Jia-Wen Wang, Zheng-Tao Liu, Fu-Sheng Pan. Effect of Mn Modification on the Corrosion Susceptibility of Mg-Mn Alloys by Magnesium Scrap [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 1-11.
[3]	Yuanyuan Liu, Zhongmin Lang, Jinlong Cui, Shengli An. Performance of Nb_0.8Zr_0.2 Layer-Modified AISI430 Stainless Steel as Bipolar Plates for Direct Formic Acid Fuel Cells [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 77-84.
[4]	Xigang Yang, Yun Zhou, Ruihua Zhu, Shengqi Xi, Cheng He, Hongjing Wu, Yuan Gao. A Novel, Amorphous, Non-equiatomic FeCrAlCuNiSi High-Entropy Alloy with Exceptional Corrosion Resistance and Mechanical Properties [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(8): 1057-1063.
[5]	P. F. Zhou, D. H. Xiao, T. C. Yuan. Microstructure, Mechanical and Corrosion Properties of AlCoCrFeNi High-Entropy Alloy Prepared by Spark Plasma Sintering [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(7): 937-946.
[6]	Li-Mei Liu, Yu-Xiang Lai, Chun-Hui Liu, Jiang-Hua Chen. Optimized Combinatorial Properties of an AlMgSi(Cu) Alloy Achieved by a Mechanical-Thermal Combinatorial Process [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(5): 751-758.
[7]	Ming He, Xian-Liang Li, Qing-Wei Wang, Qiang Wang, Zhi-Yuan Liu, Chong-Jun Wang. Influence Factors Analysis of Fe-C Alloy Blocking Layer in the Electromagnetic Induction-Controlled Automated Steel Teeming Technology [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(5): 671-678.
[8]	Zihao Tan, Lin Yang, Xinguang Wang, Yunling Du, Lihua Ye, Guichen Hou, Yanhong Yang, Jinlai Liu, Jide Liu, Jinguo Li, Yizhou Zhou, Xiaofeng Sun. Evolution of TCP Phase During Long Term Thermal Exposure in Several Re-Containing Single Crystal Superalloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(5): 731-740.
[9]	Haifei Zhou, Zhouhai Qian, Mengcheng Zhou, Xuebing Liu, Yong Li, Xinfang Zhang. Synergistic Balance of Strength and Corrosion Resistance in Al-Mg-Er Alloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(5): 659-670.
[10]	Jing-Jing Dong, Lin Fan, Hai-Bing Zhang, Li-Kun Xu, Li-Li Xue. Electrochemical Performance of Passive Film Formed on Ti-Al-Nb-Zr Alloy in Simulated Deep Sea Environments [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(4): 595-604.
[11]	Hao-Yi Niu, Fang-Fang Cao, Kun-Kun Deng, Kai-Bo Nie, Jin-Wen Kang, Hong-Wei Wang. Microstructure and Corrosion Behavior of the As-Extruded Mg-4Zn-2Gd-0.5Ca Alloy [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(3): 362-374.
[12]	Yu-Fen Zhang, Sha-Wei Tang, Tie-Gui Lin, Guang-Yi Liu, Jin Hu. Corrosion Properties of Calcium Stearate-Based Hydrophobic Coatings on Anodized Magnesium Alloy [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(9): 1111-1121.
[13]	Miao-Ran Liu, Xiao Lu, Qi Yin, Chen Pan, Chuan Wang, Zhen-Yao Wang. Effect of Acidified Aerosols on Initial Corrosion Behavior of Q235 Carbon Steel [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(8): 995-1006.
[14]	Yin Qi, Wang Zhen-Yao, Liu Miao-Ran, Pan Chen. Synergistic Effect of NaCl and SO₂ on the Initial Atmospheric Corrosion of Zinc Under Wet-Dry Cyclic Conditions [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(6): 780-796.
[15]	S. M. A. Shibli, K. S. Chinchu, M. Ameen Sha. Development of Nano-tetragonal Zirconia-Incorporated Ni-P Coatings for High Corrosion Resistance [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(4): 481-494.

STUDY OF MIXED RARE EARTH METAL (REM) CONVERSION COATING ON ALUMINUM ALLOY LY12

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments