[1] Jin Huiming, Chen Rongfa, Zhang Linnan, Liu Xiaojun, et al. High temperature oxidation behavior of magneticallysputtered Ni-0.5Y micro-crystal coating [J]. Journal of Southeast University (English Edition), 2003, 19 (4): 364-367. [doi:10.3969/j.issn.1003-7985.2003.04.013]

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High temperature oxidation behavior of magneticallysputtered Ni-0.5Y micro-crystal coating()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

19

Issue:

2003 4

Page:

364-367

Research Field:

Materials Sciences and Engineering

Publishing date:

2003-12-30

Info

Title:

High temperature oxidation behavior of magneticallysputtered Ni-0.5Y micro-crystal coating

Author(s):

Jin Huiming¹;  Chen Rongfa¹;  Zhang Linnan²;  Liu Xiaojun²

¹College of Mechanical Engineering, Yangzhou University, Yangzhou 225009, China
² College of Materials Engineering, Northeast University, Shenyang 110025, China

Keywords:

magnetic sputtering;  oxidation;  Laser Raman;  yttrium

PACS:

TG174.453

DOI:

10.3969/j.issn.1003-7985.2003.04.013

Abstract:

The isothermal and cyclic oxidation behaviors of bulk pure nickel and its magnetically sputtered Ni-0.5Y micro-crystal coating were studied at 1 000 ℃ in air. Scanning electronic microscopy(SEM)and transmission electronic microscopy(TEM)were used to examine structures of the coating and the NiO oxide films. Laser Raman spectrum was also used to measure the stress level in NiO films formed on bulk nickel and the coating. It was found that Ni-0.5Y micro-crystal coating had lower oxidation rate, and the grain-size of NiO formed on Ni-0.5Y coating was also relatively smaller than that formed on bulk nickel. Meanwhile, the compressive stress level of oxide film formed on Ni-0.5Y coating was lower than that formed on bulk nickel, and the oxide film’s high temperature plasticity was improved in the coating case. The improvements of anti-oxidation properties of the sputtered Ni-0.5Y coating were due to the micro-crystal structure and the rare earth element Y.

References:

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[3] Zhang Yifan, Shores D, Rahmel A, et al. Spallation of oxide scales formed on Ni-30Cr alloy [J]. Oxidation of Metals, 1993, 40(1): 529-536.
[4] Jin Huiming, Li Tiefan, Li Meishuan, et al. Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy [J]. Journal of Rare Earths, 1999, 17(1): 34-38.
[5] Jin Huiming, Zhang Linnan, Li Meishuan, et al. Rare earth effects on adhesion of Cr₂O₃ oxide scale formed on surface of Co-40Cr alloy [J]. Journal of Rare Earths, 2001, 19(1): 34-49.
[6] Birnie J, Cragga C. Ex situ and in situ determination of stress distributions in chromium oxide films by Raman microscopy [J]. Corrosion Science, 1992, 33(1): 1-6.
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Memo

Memo:

Biography: Jin Huiming(1968—), male, doctor, associate professor, doctorjhm@yahoo.com.

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