Cyclic oxidation and interdiffusion behavior of Ru/NiAlHf coating on Ni-based single crystal superalloy

Qing Zhao; Hui Peng; Hong Bo Guo; Sheng Kai Gong; Hui Bin Xu

Cyclic oxidation and interdiffusion behavior of Ru/NiAlHf coating on Ni-based single crystal superalloy

Qing Zhao
, Hui Peng
, Hong Bo Guo^*
, Sheng Kai Gong
, Hui Bin Xu

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A novel Ru/NiAlHf coating was deposited onto an Ni-based single crystal superalloy N5 by electron beam-physical vapor deposition(EB-PVD) of Ru and NiAlHf layer. The cyclic oxidation and interdiffusion of the Ru/NiAlHf coating at 1100°C was investigated by X-ray diffraction(XRD) and scanning electron micrograph (SEM) equipped with energy dispersive spectroscopy (EDS). The results show that the discontinuous Ru₂AlTa phase forms at the interface of coating and substrate at initial diffusion stage, which effectively inhibits outward diffusion of refractory elements in the superalloy. The phase disappears after 100 h annealing. The Ru/NiAlHf coatings effectively suppress the formation of secondary reaction zone (SRZ). No apparent scale spallation is observed on the Ru/NiAlHf coating even after 150 h cyclic oxidation, indicating that the coatings exhibit a good cyclic oxidation-resistance.

Original language	English
Pages (from-to)	1338-1344
Number of pages	7
Journal	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume	23
Issue number	5
State	Published - May 2013

Keywords

Cyclic oxidation
Electron beam-physical vapor deposition
Interdiffusion
Secondary reaction zone
Single crystal superalloy

Cite this

@article{80534eedacf047cc96a005374bb373fa,

title = "Cyclic oxidation and interdiffusion behavior of Ru/NiAlHf coating on Ni-based single crystal superalloy",

abstract = "A novel Ru/NiAlHf coating was deposited onto an Ni-based single crystal superalloy N5 by electron beam-physical vapor deposition(EB-PVD) of Ru and NiAlHf layer. The cyclic oxidation and interdiffusion of the Ru/NiAlHf coating at 1100°C was investigated by X-ray diffraction(XRD) and scanning electron micrograph (SEM) equipped with energy dispersive spectroscopy (EDS). The results show that the discontinuous Ru2AlTa phase forms at the interface of coating and substrate at initial diffusion stage, which effectively inhibits outward diffusion of refractory elements in the superalloy. The phase disappears after 100 h annealing. The Ru/NiAlHf coatings effectively suppress the formation of secondary reaction zone (SRZ). No apparent scale spallation is observed on the Ru/NiAlHf coating even after 150 h cyclic oxidation, indicating that the coatings exhibit a good cyclic oxidation-resistance.",

keywords = "Cyclic oxidation, Electron beam-physical vapor deposition, Interdiffusion, Secondary reaction zone, Single crystal superalloy",

author = "Qing Zhao and Hui Peng and Guo, \{Hong Bo\} and Gong, \{Sheng Kai\} and Xu, \{Hui Bin\}",

year = "2013",

month = may,

language = "英语",

volume = "23",

pages = "1338--1344",

journal = "Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals",

issn = "1004-0609",

publisher = "Central South University",

number = "5",

}

TY - JOUR

T1 - Cyclic oxidation and interdiffusion behavior of Ru/NiAlHf coating on Ni-based single crystal superalloy

AU - Zhao, Qing

AU - Peng, Hui

AU - Guo, Hong Bo

AU - Gong, Sheng Kai

AU - Xu, Hui Bin

PY - 2013/5

Y1 - 2013/5

N2 - A novel Ru/NiAlHf coating was deposited onto an Ni-based single crystal superalloy N5 by electron beam-physical vapor deposition(EB-PVD) of Ru and NiAlHf layer. The cyclic oxidation and interdiffusion of the Ru/NiAlHf coating at 1100°C was investigated by X-ray diffraction(XRD) and scanning electron micrograph (SEM) equipped with energy dispersive spectroscopy (EDS). The results show that the discontinuous Ru2AlTa phase forms at the interface of coating and substrate at initial diffusion stage, which effectively inhibits outward diffusion of refractory elements in the superalloy. The phase disappears after 100 h annealing. The Ru/NiAlHf coatings effectively suppress the formation of secondary reaction zone (SRZ). No apparent scale spallation is observed on the Ru/NiAlHf coating even after 150 h cyclic oxidation, indicating that the coatings exhibit a good cyclic oxidation-resistance.

AB - A novel Ru/NiAlHf coating was deposited onto an Ni-based single crystal superalloy N5 by electron beam-physical vapor deposition(EB-PVD) of Ru and NiAlHf layer. The cyclic oxidation and interdiffusion of the Ru/NiAlHf coating at 1100°C was investigated by X-ray diffraction(XRD) and scanning electron micrograph (SEM) equipped with energy dispersive spectroscopy (EDS). The results show that the discontinuous Ru2AlTa phase forms at the interface of coating and substrate at initial diffusion stage, which effectively inhibits outward diffusion of refractory elements in the superalloy. The phase disappears after 100 h annealing. The Ru/NiAlHf coatings effectively suppress the formation of secondary reaction zone (SRZ). No apparent scale spallation is observed on the Ru/NiAlHf coating even after 150 h cyclic oxidation, indicating that the coatings exhibit a good cyclic oxidation-resistance.

KW - Cyclic oxidation

KW - Electron beam-physical vapor deposition

KW - Interdiffusion

KW - Secondary reaction zone

KW - Single crystal superalloy

UR - https://www.scopus.com/pages/publications/84880350344

M3 - 文章

AN - SCOPUS:84880350344

SN - 1004-0609

VL - 23

SP - 1338

EP - 1344

JO - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

JF - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

IS - 5

ER -

Cyclic oxidation and interdiffusion behavior of Ru/NiAlHf coating on Ni-based single crystal superalloy

Abstract

Keywords

Other files and links

Fingerprint

Cite this