Flow Fields Simulation of Plasma Carbonitriding in Liquid for Titanium Alloy
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摘要: 液相等离子碳氮共渗技术可以改变钛合金的表面性质以增强其的表面硬度及耐磨损性能,电解槽中流场分布的均匀性是影响碳氮共渗处理稳定性和工件表面质量的重要因素。通过对电解槽中的流场进行数值模拟,探索电解液的流动方向,流动速度,流量与极板面积大小对电解槽中流场分布均匀性的影响。结果表明:电解液的流动方向是影响流场分布均匀性的主要因素;流速和流量会对电解槽中的压力与速度大小造成影响;极板面积的大小会影响两极板之间电解液的流动。Abstract: Plasma Carbonitriding in liquid is used to improve the surface properties and the abrasion performance of titanium alloy. The uniformity of flow fileds in electrolyzer is an important factor to influence the stability of Plasma Carbonitriding and the surface quality. By simulating the flow fields in electrolyzer, the effects of the direction, speed, flow of electrolyte and the area of electrode plate on the uniformity of flow fields were studied. The results showed that the direction of electrolyte has a great influence on the uniformity of flow fields. The speed and flow of electrolyte can only affect the pressure and speed in reactive tank, the area of electrode plate can affect the move of electrolyte between two plates.
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Key words:
- Titanium alloy /
- Carbonitriding /
- Fluent /
- flow fileds
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[1] 李杰,沈德久,王玉林,等.液相等离子体电解渗透技术[J].金属热处理,2005,30(9):63-67 Li J, Shen D J, Wang Y L, et al. Plasma electrolytic saturation technique in solution[J]. Heat Treatment of Metals, 2005,30(9):63-67 (in Chinese) [2] 聂学渊.快速表面改性技术研究[J].金属热处理,1997,(3):19-22,28 Nie X Y. Study of the rapid surface modification technology[J]. Heat Treatment of Metals, 1997,(3):19-22,28 (in Chinese) [3] Yerokhin A L, Nie X, Leyland A, et al. Plasma electrolysis for surface engineering[J]. Surface and Coatings Technology, 1999,122(2-3):73-93 [4] Nie X, Tsotsos C, Wilson A, et al. Characteristics of a plasma electrolytic nitrocarburising treatment for stainless steels[J]. Surface and Coatings Technology, 2001,139(2-3):135-142 [5] 柳永康,谢发勤,胡宗纯,等.时间和电压对TC4合金表面等离子碳氮共渗层的影响[J].中国表面工程,2007,20(5):37-40 Liu Y K, Xie F Q, Hu Z C, et al. The effect of time and voltage on plasma carbonitriding layer of TC4 alloy[J]. China Surface Engineering, 2007,20(5):37-40 (in Chinese) [6] Teixeira V. Mechanical integrity in PVD coatings due to the presence of residual stresses[J]. Thin Solid Films, 2001,392(2):276-281 [7] Škoriĉ B, Kakaš D, Bibic N, et al. Microstructural studies of TiN coatings prepared by PVD and IBAD[J]. Surface Science, 2004,566-568:40-44 [8] Matsuura K, Kudoh M. Surface modification of titanium by a diffusional carbo-nitriding method[J]. Acta Materialia, 2002,50(10):2693-2700 [9] 李新梅,孙文磊,憨勇,等. 纯钛表面电解液微弧碳氮化制备碳氮化钛厚膜[J].金属学报,2008,44(9):1105-1110 Li X M, Sun W L, Han Y, et al. Preparation of Ti(CxN1-x) thick films on titanium by plasma electrolytic carbonitriding[J]. Acta Metallurgica Sinica, 2008,44(9):1105-1110 (in Chinese) [10] Ando K, Matsumura K. Current efficiency in the plasma anodization of aluminium[J]. Thin Solid Films, 1978,52(2):153-162 [11] Tarakci M, Korkmaz K, Gencer Y, et al. Plasma electrolytic surface carburizing and hardening of pure iron[J]. Surface and Coatings Technology, 2005,199(2-3):205-212 [12] 张凯,王瑞金,王刚.Fluent技术基础与应用实例[M].2版.北京:清华大学出版社,2010 Zhang K, Wang R J, Wang G. Technology base and application examples of Fluent[M]. 2nd ed. Beijing: Tsinghua University Press, 2010 (in Chinese) [13] 武立胜,吕新生,张晔,等.基于Fluent 连杆模具电解加工过程的三维流场分析[J].机械科学与技术,2011,30(9):1443-1445 Wu L S, L? X S, Zhang Y, et al. Fluent based numerical simulation of three-dimensional flow field of electrochemical machining for a connecting rod mold[J]. Mechanical Science and Technology for Aerospace Engineering, 2011,30(9):1443-1445 (in Chinese) [14] 傅秀清,康敏,鲜洁宇,等.电解车削加工流场的数值模拟及工艺试验研究[J].机械科学与技术,2014,33(5):693-696 Fu X Q, Kang M, Xian J Y, et al. Research on the numerical simulation and experiments of the flow field in electrochemical turning[J]. Mechanical Science and Technology for Aerospace Engineering, 2014,33(5):693-696 (in Chinese) [15] 崔庆忠,邵文英,王风云.不同温度下水-甲酰胺体系的密度与粘度[J].华东工学院学报,1992(5):88-91,96 Cui Q Z, Shao W Y, Wang F Y. Densities and viscosities of H2O-HCONH2 mixtures at different temperatures[J]. Journal of East China Institute of Technology, 1992(5):88-91,96 (in Chinese)
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