Investigation on Oxidation Resistance of NiCoCrAlY Coating Irradiated by High Current Pulsed Electron Beam

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In this paper, the NiCoCrAlY bond-coats was deposited onto the DZ4 nickel-based superalloy substrate by using low-pressure Plasma Spraying (LPPS) process, and then the coats were irradiated by high-current pulsed electron beam (HCPEB). Phase structures and microstructure of the HCPEB-treated NiCoCrAlY coating were analyzed by SEM, XRD and EDAX. The present results showed that the coating surface was remelted after HCPEB treatments, became smooth, had crater eruption, and the coating hadn’t produced distinct residual stresses. The results of the isothermal oxidations experiment performed in 900°C static air revealed that the oxidation resistance of the coating was enhanced obviously after HCPEB-treated and the oxides were mainly Aluminum-oxides, but without HCPEB-treated, the oxides of coating also had Nickel-oxides.

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Materials Science Forum (Volumes 654-656)

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1936-1939

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June 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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[1] T. R. Kakuda, A. M. Limarga, T. D. Bennett, D. R. Clarke: Acta Materialia 57 (2009) p.2583.

Google Scholar

[2] D. M. Zhu, S. R. Choi, R. A. Miller: Surf. Coat. Techn. , Vol. 188-189, 2004, P. 146.

Google Scholar

[3] A. Weisenburger, G. Rizzi, A. Scrivani, Georg Mueller, J.R. Nicholls: Surf. Coat. Techn. Vol. 202 (2007), p.704.

Google Scholar

[4] A. B. Markov and V. P. Rotshtein, Nucl. Instr. & Meth. B 132, (1997) p.79.

Google Scholar

[5] D. I. Proskurovsky, V. P. Rotshtein and G. E. Ozur, Surf. Coat. Techn. 125, (2000), p.49.

Google Scholar

[6] A. D. Pogrebnjak, V. S. Ladysev, N. A. Pogrebnjak, A. D. Michaliov, V. T. Shablya, A. N. Valyaev, A. A. Valyaev, V. B. Loboda, Vacuum 58, 45 (2000).

DOI: 10.1016/s0042-207x(00)00221-9

Google Scholar

[7] A. D. Pogrebnjak, S. Bratushka and V.I. Boyko, Nucl. Instr. and Meth. B 145, (1998), p.373.

Google Scholar

[8] Jianxin Zou, Kemin Zhang, Chuang Dong, Ying Qin, and Shengzhi Hao: Appl. Phys. Lett. 89 (2006) p.041913.

Google Scholar

[9] Ying Qin, Chuang Dong, Xiaogang Wang, Shengzhi Hao, Aimin Wu, Jianxin Zou, Yue Liu. J. Vac. Sci. Technol. A21(6), (2003), p. (1934).

Google Scholar

[10] Zhong Wang, Xianxiu Mei, Wenfei Sun, Shengzhi Hao, Hongchen Wu, Ying Qin, Chuang Dong, Chinese High Power Laser and Particle Beams, 2009, 21(9): 1400-1404. ).

Google Scholar

[11] Haizhong Zheng, Shiqiang Lu, Kelu Wang, et al. Chinese J. Nonferrous Met. 18(12), (2008), p.2172.

Google Scholar