High-temperature oxidation behavior of laser-aided additively manufactured NiCrAlY coating

M. Ansari; R. Shoja-Razavi; M. Barekat; H. C. Man

doi:10.1016/j.corsci.2017.02.001

High-temperature oxidation behavior of laser-aided additively manufactured NiCrAlY coating

M. Ansari
, R. Shoja-Razavi
, M. Barekat
, H. C. Man

Research output: Journal Publication › Article › peer-review

58 Citations (Scopus)

Abstract

In this study, NiCrAlY coatings were additively manufactured on the surface of IN738 substrate through a laser-aided additive manufacturing approach. The high-temperature oxidation behavior of freestanding coatings at 1200 °C was also investigated. The coatings were thick, dense, and well-bonded with dendritic γ/β microstructure. The results proved that the coatings were able to withstand the operating temperature of 1200 °C for up to ten cycles. After ten cycles of oxidation, the oxide scales formed on the coatings were mainly composed of α-Al₂O₃ and Al₅Y₃O₁₂ phases; however, NiO, Cr₂O₃ and Ni(Cr,Al)₂O₄ phases were not detected.

Original language	English
Pages (from-to)	168-177
Number of pages	10
Journal	Corrosion Science
Volume	118
DOIs	https://doi.org/10.1016/j.corsci.2017.02.001
Publication status	Published - 1 Apr 2017
Externally published	Yes

Free Keywords

A. Metal coatings
A. Superalloys
C. High temperature corrosion
C. Oxidation

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

Access to Document

10.1016/j.corsci.2017.02.001

Cite this

@article{df67e683371d4c06b7f839b3b86e6c45,

title = "High-temperature oxidation behavior of laser-aided additively manufactured NiCrAlY coating",

abstract = "In this study, NiCrAlY coatings were additively manufactured on the surface of IN738 substrate through a laser-aided additive manufacturing approach. The high-temperature oxidation behavior of freestanding coatings at 1200 °C was also investigated. The coatings were thick, dense, and well-bonded with dendritic γ/β microstructure. The results proved that the coatings were able to withstand the operating temperature of 1200 °C for up to ten cycles. After ten cycles of oxidation, the oxide scales formed on the coatings were mainly composed of α-Al2O3 and Al5Y3O12 phases; however, NiO, Cr2O3 and Ni(Cr,Al)2O4 phases were not detected.",

keywords = "A. Metal coatings, A. Superalloys, C. High temperature corrosion, C. Oxidation",

author = "M. Ansari and R. Shoja-Razavi and M. Barekat and Man, \{H. C.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = apr,

day = "1",

doi = "10.1016/j.corsci.2017.02.001",

language = "English",

volume = "118",

pages = "168--177",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - High-temperature oxidation behavior of laser-aided additively manufactured NiCrAlY coating

AU - Ansari, M.

AU - Shoja-Razavi, R.

AU - Barekat, M.

AU - Man, H. C.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - In this study, NiCrAlY coatings were additively manufactured on the surface of IN738 substrate through a laser-aided additive manufacturing approach. The high-temperature oxidation behavior of freestanding coatings at 1200 °C was also investigated. The coatings were thick, dense, and well-bonded with dendritic γ/β microstructure. The results proved that the coatings were able to withstand the operating temperature of 1200 °C for up to ten cycles. After ten cycles of oxidation, the oxide scales formed on the coatings were mainly composed of α-Al2O3 and Al5Y3O12 phases; however, NiO, Cr2O3 and Ni(Cr,Al)2O4 phases were not detected.

AB - In this study, NiCrAlY coatings were additively manufactured on the surface of IN738 substrate through a laser-aided additive manufacturing approach. The high-temperature oxidation behavior of freestanding coatings at 1200 °C was also investigated. The coatings were thick, dense, and well-bonded with dendritic γ/β microstructure. The results proved that the coatings were able to withstand the operating temperature of 1200 °C for up to ten cycles. After ten cycles of oxidation, the oxide scales formed on the coatings were mainly composed of α-Al2O3 and Al5Y3O12 phases; however, NiO, Cr2O3 and Ni(Cr,Al)2O4 phases were not detected.

KW - A. Metal coatings

KW - A. Superalloys

KW - C. High temperature corrosion

KW - C. Oxidation

UR - https://www.scopus.com/pages/publications/85012009572

U2 - 10.1016/j.corsci.2017.02.001

DO - 10.1016/j.corsci.2017.02.001

M3 - Article

AN - SCOPUS:85012009572

SN - 0010-938X

VL - 118

SP - 168

EP - 177

JO - Corrosion Science

JF - Corrosion Science

ER -

High-temperature oxidation behavior of laser-aided additively manufactured NiCrAlY coating

Abstract

Free Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this