[1] [1] L. Dubourg, J. Archambeault. Technological and scientific landscape of laser cladding process in 2007 [J]. Surface & Coatings Technology, 2008, 202(24): 5863～5869

[2] [2] Huang Yongjun. Characterization of dilution action in laser-induction hybrid cladding [J]. Opt. & Laser Technol., 2011, 43(5): 965～973

[3] [3] Ehsan Toyserkani, Amir Khajepour, Stephen Corbin. Laser Cladding [M]. Florida: CRC Press, 2005. 1～40

[4] [4] Jin Xiaoshu, Yang Xichen, Feng Liwei et al.. Numerical simulation of coaxial powder flow with carrying gas in laser manufacturing [J]. Chinese J. Mechanical Engineeting, 2007, 43(5): 161～166

[5] [5] Jin Shaowei, He Xiuli, Wu Yang et al.. Laser power attenuation by powder flow in coaxial laser cladding [J]. Chinese J. Lasers, 2011, 38(9): 67～72

[6] [6] I. Tabernero, A. Lamikiz, S. Martínez et al.. Modelling of energy attenuation due to powder flow-laser beam ineraction during laser cladding process [J]. J. Materials Processing Technology, 2012, 212(2): 516～522

[7] [7] Andrew J. Pinkerton. An analytical model of beam attenuation and powder heating during coaxial laser direct metal deposition [J]. J. Phys. (D), 2007, 40(23): 7323～7334

[8] [8] Lu Qiaopan, Zhang Anfeng, Li Dichen et al.. Numerical simulation and experimental research on gas-carrier coaxial powder nozzle [J]. Chinese J. Lasers, 2010, 37(12): 3162～3167

[9] [9] Fu Wei, Zhang Anfeng, Li Dichen et al.. Influence of three-route gas flows on powder converging behavior in coaxial powder feeding nozzles [J]. China Mechanical Engineering, 2011, 22(2): 220～226

[10] [10] Zhu Gangxian, Li Dichen, Zhang Anfeng et al.. Influence of deposited layer′s structure on flow field of coaxial powder feeding nozzle [J]. Chinese J. Lasers, 2010, 37(6): 1636～1642

[11] [11] Srdja Zekovi, Rajeev Dwivedi, Radovan Kovacevic. Numerical simulation and experimental invesitgation of gas-powder flow from radially symmetrical nozzles in laser-based direct metal deposition [J]. International J. Machine Tools & Manufacture, 2007, 47(1): 112～123

[12] [12] Tan Hua, Zhang Fengying, Wen Rujun et al.. Numerical simulation of powder feed of laser solid forming [J]. Chinese J. Lasers, 2011, 38(10): 46～53

[13] [13] Balu Prabu, Leggett Perry, Kovacevic Radovan. Parametric study on a coaxial multi-material powder flow in laser-based powder deposition process [J]. J. Materials Processing Technology, 2012, 212(7): 1598～1610

[14] [14] Wu Yang. Microstructure and Properties of Refractory Alloy Coatings by Laser Cladding Technology [D]. Beijing: Institute of Mechanics, Chinese Academy of Sciences, 2011. 13～18

[15] [15] I. Tabernero, A. Lamikiz, E. Ukar et al.. Numerical simulation and experimental validation of powder flux distribution in coaxial laser cladding [J]. J. Materials Processing Technology, 2010, 210(15): 2125～2134

[16] [16] A. Haider, O. Levenspiel. Drag coefficient and terminal velocity of spherical and nonspherical particles [J]. Powder Technology, 1989, 58(1): 63～70

[17] [17] Du Wei, Bao Xiaojun, Xu Jian et al.. Computational fluid dynamics(CFD) modeling of spouted bed: influence of frictional stress, maximum packing limit and coefficient of restitution of particles [J]. Chemical Engineering Science, 2006, 61(14): 4558～4570