MICROSTRUCTURE AND OXIDATION RESISTANCE OFNiCoCrAlYTaCOATING BY LOW PRESSURE PLASMA SPRAYING

X.-H. Liang (), K. S. Zhou, Mingyang Liu (), R. J. Hong, C. G. Deng, S. Luo and Z. K. Chen
Additional contact information
X.-H. Liang: Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China
K. S. Zhou: Institute of Surface Engineering, Guangzhou Research Institute of Non-Ferrous Metals, Guangzhou, China
R. J. Hong: Institute of Surface Engineering, Guangzhou Research Institute of Non-Ferrous Metals, Guangzhou, China
C. G. Deng: Institute of Surface Engineering, Guangzhou Research Institute of Non-Ferrous Metals, Guangzhou, China
S. Luo: Institute of Surface Engineering, Guangzhou Research Institute of Non-Ferrous Metals, Guangzhou, China
Z. K. Chen: Institute of Surface Engineering, Guangzhou Research Institute of Non-Ferrous Metals, Guangzhou, China

Surface Review and Letters (SRL), 2009, vol. 16, issue 03, 375-380

Abstract: TheNiCoCrAlYTacoating was prepared onNi-based single crystal super-alloys by low pressure plasma spraying (LPPS). The phases and microstructures for the coatings were characterized by X-ray diffraction and scanning electron microscopy, and the fracture toughness and micro-hardness for both coatings and substrate were also investigated. The relationship between coating properties and oxidation was analyzed. The result shows that elementary distribution ofNiCoCrAlYTacoatings, which consists ofγ-Ni,β-NiAl,γ'-Ni3Al, andCrCoTaphases, is much homogeneous. The composition changes with depth from the surface to substrate for the coatings. The micro-hardness of coatings is 350.8 HV0.3and fracture toughness is 2.73 MPa m1/2. The oxidation resistance of coatings excelled thanNi-based single crystal super-alloys.

Keywords: NiCoCrAlYTacoating; low pressure plasma spraying; microstructures; fracture toughness (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X09012743
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:16:y:2009:i:03:n:s0218625x09012743

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X09012743

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().