1 Research Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China 2 Science and Technology on Particle Transport and Separation Key National Defense Laboratory,Tianjin 300180,China 3 School of Material Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
Abstract: In this study,the Ta-W coating was prepared by adding a transition layer of tantalum on the surface of pure copper using double glow plasma surface alloying technology. The oxidation property of copper matrix and Ta-W coating was analyzed by isothermal oxidation test at 400 ℃. The nano-hardness and high temperature wear resistance of Ta-W coating were carried out by using nano-indentation tester and friction wear tester,respectively. The results show that the Ta-W coating exhibits the cellular,compact and homogeneous structure,with the thicknesses of about 13 μm. The element content of each layer presents a gradient distribution,which leads to good interface bonding,and the main phase of the coating is single α-W. After isothermal oxidation for 50 h at 400 ℃,the oxidation mass gain of pure copper was 13.9 mg/cm2,and that of Ta-W coating was 4.6 mg/cm2,about 33.1% of the matrix. The continuous,dense and non-defective oxide film of Ta-W coating is composed of W18O49 and WO3,and the film completely covers the matrix, which could effectively prevent the oxygen into the substrate and significantly improve the oxidation performance. As compared with pure copper substrate,the nano-hardness of the Ta-W coating was significantly increased, from 1.07 GPa to 11.99 GPa. The average friction coefficient of Ta-W coating had a little change,but the fluctuation range of friction coefficient decreased significantly. The specific wear rate decreased from 13.77×10-4 mm3/(N·m) to 7.24×10-4 mm3/(N·m),which corresponded to an improvement of wear resistance. The wear mechanism of the substrate is mainly the combination of adhesion wear,oxidation wear and abrasive wear,while the Ta-W coating shows slight abrasive wear.
1 Wang Q S. Development and application of copper and copper alloys,Metallurgical Industry Press,China,2013,pp.23 (in Chinese). 王强松. 铜及铜合金开发与应用,冶金工业出版社,2013,pp.23. 2 Maki K,Ito Y,Matsunaga H,et al. Scripta Materialia,2013,68(10),777. 3 Barella S,Gruttadauria A,Mapelli C,et al. Engineering Failure Analysis,2014,36,432. 4 Wang K. Metal silicide based composite coating deposited on copper using pulse laser-induction cladding. Ph.D. Thesis,Huazhong University of Science and Technology,China,2017 (in Chinese). 王珂. 纯铜表面脉冲激光-感应复合熔覆制备金属硅化物基涂层研究. 博士学位论文,华中科技大学,2017. 5 Liu C J. World Nonferrous Metals,2018,1(2),17 (in Chinese). 刘春佳. 世界有色金属,2018,1(2),17. 6 Zhu Y,Sun J T,Yan L S,et al. Journal of Functional Materials,2019,50(6),6206 (in Chinese). 朱阳,孙建涛,闫联生,等. 功能材料,2019,50(6),6206. 7 Zhang F L,Wang X,Song K Q,et al. Surface Technology,2020,49(9),141 (in Chinese). 张福林,王旋,宋凯强,等. 表面技术,2020,49(9),141. 8 Jiang F,Zhang Y,Sun N,et al. Applied Surface Science,2014,317,867. 9 Liu Y H,Zhang Y C,Liu Q Z,et al. Fusion Engineering & Design,2012,87(11),1861. 10 Wang T G,Chen J L,Chen Y,et al. Journal of Nuclear Materials,2007,363-365,1294. 11 Monclús S M A,Karlik M,Callisti M,et al. Thin Solid Films,2014,571,275. 12 Meng Y,Zhang J,Duan C,et al. Advanced Powder Technology,2015,26(2),392. 13 Jia C C,Jin X H,Zhao J,et al. Powder Metallurgy Technology,2001,19(3),148 (in Chinese). 贾成厂,金雪华,赵军,等. 粉末冶金技术,2001,19(3),148. 14 Zhang J,Huang Y,Wang Z,et al. Journal of Alloys and Compounds,2019,774,939. 15 Xi W,Ding W,Yu S,et al. Surface and Coatings Technology,2019,359,426. 16 Qiu Z K,Zhang P Z,Wei D B,et al. Surface and Coatings Technology,2015,278,92. 17 Wang Q,Zhang P Z,Wei D B,et al. Materials & Design,2013,52,265. 18 Zhang L B,Wei D B,Zhang P Z,et al. Surface Technology,2018,47(4),17 (in Chinese). 张李波,魏东博,张平则,等. 表面技术,2018,47(4),17. 19 Dang B,Tian T,Yang K,et al. Coatings,2020,10(10),926. 20 Gao Y,Xu J Y,Gao Q,et al. Engineering Science of China,2008,10(2),26 (in Chinese). 高原,徐晋勇,高清,等. 中国工程科学,2008,10(2),26. 21 Broszeit E,Matthes B,Herr W,et al. Surface and Coatings Technology,1993,58(1),29. 22 Lee S L,Doxbeck M,Mueller J,et al. Surface and Coatings Technology,2004,177-178,44. 23 Li X,Zhang P. Acta Metallurgica Sinica,2010,23(3),215. 24 Cifuentes S C,Monge M A,Prez P. Corrosion Science,2012,57,114. 25 Oliver W C,Pharr G M. Journal of Materials Research,1992,7(6),1564.
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2022, Vol. 36 
