| DOI | Resolve DOI: https://doi.org/10.2320/jinstmet.J2014017 |
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| Author | Search for: Saito, Shigeru; Search for: Takashima, Toshiyuki; Search for: Miyama, Katsumi; Search for: Narita, Toshio; Search for: Zhao, Linruo1 |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Subject | Cathodes; Deposition; Diffusion; Diffusion coatings; Nickel; Solid solutions; Arc deposition; NbCr₂(HT) phase; NbNi₃ phase; Nickel chromium; Vacuum heat treatment; Heat treatment |
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| Abstract | The formation of the inter-diffusion zone (IDZ) between NiCrAlY coating and Nb substrate during vacuum heat treatment was investigated. A NiCrAlY coating was applied on Nb substrate by cathode arc deposition. Vacuum heat treatments were carried out at 800°C, 900°Cand 1000°C for 2 h. SEM, EPMA, EDS and XRD were performed to analyze the microstructure of the IDZ and the results were interpreted using the 1002°C isothermal ternary Nb-Ni-Cr phase diagram. It was found that at 800°C the IDZ has a single NbNi₃ layer; at 900°C the IDZ consists of an outer NbNi₃ layer, a thin intermediate NbCr₂(HT) layer and an inner Nb₇Ni₆ layer; at 1000°C the IDZ has three well-developed layers: an outer NbNi₃ layer, an intermediate NbCr₂(HT) layer and an inner Nb₇Ni₆ layer. A small amount of Cr exists in both NbNi₃ and Nb₇Ni₆ phases as solid solution, and a large amount of Ni in NbCr₂(HT) phase as solid solution. |
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| Publication date | 2014-09-01 |
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| In | |
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| Translation of | |
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| Language | Japanese |
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| Peer reviewed | Yes |
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| NPARC number | 21275469 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 5d04a9ed-206a-4ff3-a09e-647f6bf3ddd8 |
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| Record created | 2015-07-14 |
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| Record modified | 2023-02-20 |
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