Surface characterization of the cyclically oxidized γ-Ti-48Al-2Nb-0.7Cr alloy after nitridation

M. N. Mathabathe; G. Govender; C. W. Siyasiya; R. J. Mostert; A. S. Bolokang

doi:10.1016/j.matchar.2019.05.036

Surface characterization of the cyclically oxidized γ-Ti-48Al-2Nb-0.7Cr alloy after nitridation

M. N. Mathabathe, G. Govender, C. W. Siyasiya, R. J. Mostert, A. S. Bolokang

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

9 Citations (Scopus)

Abstract

Surface properties of the nitrided γ-Ti-48Al-2Nb-0.7Cr intermetallic alloy after cyclic oxidation was characterized. The nitride coating was successfully deposited after annealing of the Ti-48Al-2Nb-0.7Cr intermetallic alloy at 900 °C under nitrogen atmosphere. As a result, the nitride layer on the Ti-48Al-2Nb-0.7Cr alloy significantly improved its cyclic oxidation and the best performance was recorded at 900 °C after 900 h (h). Atomic force spectroscopy (AFM) analysis confirmed the surface multi-layers with surface roughness and a spectral root mean square (RMS) amplitude of 165 nm. Microstructures were analysed employing scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. Phase analysis was conducted using X-ray diffraction (XRD).

Original language	English
Pages (from-to)	94-102
Number of pages	9
Journal	Materials Characterization
Volume	154
DOIs	https://doi.org/10.1016/j.matchar.2019.05.036
Publication status	Published - Aug 2019
Externally published	Yes

Keywords

Nitriding
Oxidation
Oxynitride
Surface coating
Ti-48Al-2Nb-0.7Cr alloy

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matchar.2019.05.036

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@article{3b39a2e65b474ae79911caf74f492834,

title = "Surface characterization of the cyclically oxidized γ-Ti-48Al-2Nb-0.7Cr alloy after nitridation",

abstract = "Surface properties of the nitrided γ-Ti-48Al-2Nb-0.7Cr intermetallic alloy after cyclic oxidation was characterized. The nitride coating was successfully deposited after annealing of the Ti-48Al-2Nb-0.7Cr intermetallic alloy at 900 °C under nitrogen atmosphere. As a result, the nitride layer on the Ti-48Al-2Nb-0.7Cr alloy significantly improved its cyclic oxidation and the best performance was recorded at 900 °C after 900 h (h). Atomic force spectroscopy (AFM) analysis confirmed the surface multi-layers with surface roughness and a spectral root mean square (RMS) amplitude of 165 nm. Microstructures were analysed employing scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. Phase analysis was conducted using X-ray diffraction (XRD).",

keywords = "Nitriding, Oxidation, Oxynitride, Surface coating, Ti-48Al-2Nb-0.7Cr alloy",

author = "Mathabathe, {M. N.} and G. Govender and Siyasiya, {C. W.} and Mostert, {R. J.} and Bolokang, {A. S.}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = aug,

doi = "10.1016/j.matchar.2019.05.036",

language = "English",

volume = "154",

pages = "94--102",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Surface characterization of the cyclically oxidized γ-Ti-48Al-2Nb-0.7Cr alloy after nitridation

AU - Mathabathe, M. N.

AU - Govender, G.

AU - Siyasiya, C. W.

AU - Mostert, R. J.

AU - Bolokang, A. S.

PY - 2019/8

Y1 - 2019/8

N2 - Surface properties of the nitrided γ-Ti-48Al-2Nb-0.7Cr intermetallic alloy after cyclic oxidation was characterized. The nitride coating was successfully deposited after annealing of the Ti-48Al-2Nb-0.7Cr intermetallic alloy at 900 °C under nitrogen atmosphere. As a result, the nitride layer on the Ti-48Al-2Nb-0.7Cr alloy significantly improved its cyclic oxidation and the best performance was recorded at 900 °C after 900 h (h). Atomic force spectroscopy (AFM) analysis confirmed the surface multi-layers with surface roughness and a spectral root mean square (RMS) amplitude of 165 nm. Microstructures were analysed employing scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. Phase analysis was conducted using X-ray diffraction (XRD).

AB - Surface properties of the nitrided γ-Ti-48Al-2Nb-0.7Cr intermetallic alloy after cyclic oxidation was characterized. The nitride coating was successfully deposited after annealing of the Ti-48Al-2Nb-0.7Cr intermetallic alloy at 900 °C under nitrogen atmosphere. As a result, the nitride layer on the Ti-48Al-2Nb-0.7Cr alloy significantly improved its cyclic oxidation and the best performance was recorded at 900 °C after 900 h (h). Atomic force spectroscopy (AFM) analysis confirmed the surface multi-layers with surface roughness and a spectral root mean square (RMS) amplitude of 165 nm. Microstructures were analysed employing scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. Phase analysis was conducted using X-ray diffraction (XRD).

KW - Nitriding

KW - Oxidation

KW - Oxynitride

KW - Surface coating

KW - Ti-48Al-2Nb-0.7Cr alloy

UR - http://www.scopus.com/inward/record.url?scp=85066485061&partnerID=8YFLogxK

U2 - 10.1016/j.matchar.2019.05.036

DO - 10.1016/j.matchar.2019.05.036

M3 - Article

AN - SCOPUS:85066485061

SN - 1044-5803

VL - 154

SP - 94

EP - 102

JO - Materials Characterization

JF - Materials Characterization

ER -

Surface characterization of the cyclically oxidized γ-Ti-48Al-2Nb-0.7Cr alloy after nitridation

Abstract

Keywords

ASJC Scopus subject areas

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