Microstructures, hardness and erosion behavior of thermal sprayed and heat treated NiAl coatings with different ceria

Y. Wang; Y. Yang; M. F. Yan

doi:10.1016/j.wear.2006.12.003

Microstructures, hardness and erosion behavior of thermal sprayed and heat treated NiAl coatings with different ceria

Y. Wang^*
, Y. Yang
, M. F. Yan

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

34 Scopus citations

Abstract

The microstructure, hardness and erosion behavior of High velocity oxy-fuel (HVOF) thermal sprayed and heat treated NiAl intermetallic coatings with three different ceria were studied through erosion tests, Vickers hardness tests and microstructural characterizations in this paper. Test results showed that heat treatment can obviously change the erosion behavior of the HVOF thermal sprayed NiAl intermetallic coatings. After heat treatment at high temperatures, Al₂O₃, CeAlO₃ and NiAl₂O₃ are formed in the NiAl intermetallic coatings. Heat treated at high temperature (above 600 °C), the NiAl intermetallic coatings were strongly softened and exhibited higher erosion rates. Work hardening occurred during the erosion test. The degree of work hardening in thermal sprayed coating is larger than that in heat-treated coatings. Erosion surface morphologies and cross sections showed that the erosion is a mixture mechanism of mainly ductile combined with partly brittle for the coatings containing ceria.

Original language	English
Pages (from-to)	371-378
Number of pages	8
Journal	Wear
Volume	263
Issue number	1-6 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.wear.2006.12.003
State	Published - 10 Sep 2007

Keywords

Ceria
Erosion
Hardness
Heat treatment
Thermal sprayed NiAl intermetallic coatings

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10.1016/j.wear.2006.12.003

Cite this

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title = "Microstructures, hardness and erosion behavior of thermal sprayed and heat treated NiAl coatings with different ceria",

abstract = "The microstructure, hardness and erosion behavior of High velocity oxy-fuel (HVOF) thermal sprayed and heat treated NiAl intermetallic coatings with three different ceria were studied through erosion tests, Vickers hardness tests and microstructural characterizations in this paper. Test results showed that heat treatment can obviously change the erosion behavior of the HVOF thermal sprayed NiAl intermetallic coatings. After heat treatment at high temperatures, Al2O3, CeAlO3 and NiAl2O3 are formed in the NiAl intermetallic coatings. Heat treated at high temperature (above 600 °C), the NiAl intermetallic coatings were strongly softened and exhibited higher erosion rates. Work hardening occurred during the erosion test. The degree of work hardening in thermal sprayed coating is larger than that in heat-treated coatings. Erosion surface morphologies and cross sections showed that the erosion is a mixture mechanism of mainly ductile combined with partly brittle for the coatings containing ceria.",

keywords = "Ceria, Erosion, Hardness, Heat treatment, Thermal sprayed NiAl intermetallic coatings",

author = "Y. Wang and Y. Yang and Yan, \{M. F.\}",

year = "2007",

month = sep,

day = "10",

doi = "10.1016/j.wear.2006.12.003",

language = "英语",

volume = "263",

pages = "371--378",

journal = "Wear",

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number = "1-6 SPEC. ISS.",

}

TY - JOUR

T1 - Microstructures, hardness and erosion behavior of thermal sprayed and heat treated NiAl coatings with different ceria

AU - Wang, Y.

AU - Yang, Y.

AU - Yan, M. F.

PY - 2007/9/10

Y1 - 2007/9/10

N2 - The microstructure, hardness and erosion behavior of High velocity oxy-fuel (HVOF) thermal sprayed and heat treated NiAl intermetallic coatings with three different ceria were studied through erosion tests, Vickers hardness tests and microstructural characterizations in this paper. Test results showed that heat treatment can obviously change the erosion behavior of the HVOF thermal sprayed NiAl intermetallic coatings. After heat treatment at high temperatures, Al2O3, CeAlO3 and NiAl2O3 are formed in the NiAl intermetallic coatings. Heat treated at high temperature (above 600 °C), the NiAl intermetallic coatings were strongly softened and exhibited higher erosion rates. Work hardening occurred during the erosion test. The degree of work hardening in thermal sprayed coating is larger than that in heat-treated coatings. Erosion surface morphologies and cross sections showed that the erosion is a mixture mechanism of mainly ductile combined with partly brittle for the coatings containing ceria.

AB - The microstructure, hardness and erosion behavior of High velocity oxy-fuel (HVOF) thermal sprayed and heat treated NiAl intermetallic coatings with three different ceria were studied through erosion tests, Vickers hardness tests and microstructural characterizations in this paper. Test results showed that heat treatment can obviously change the erosion behavior of the HVOF thermal sprayed NiAl intermetallic coatings. After heat treatment at high temperatures, Al2O3, CeAlO3 and NiAl2O3 are formed in the NiAl intermetallic coatings. Heat treated at high temperature (above 600 °C), the NiAl intermetallic coatings were strongly softened and exhibited higher erosion rates. Work hardening occurred during the erosion test. The degree of work hardening in thermal sprayed coating is larger than that in heat-treated coatings. Erosion surface morphologies and cross sections showed that the erosion is a mixture mechanism of mainly ductile combined with partly brittle for the coatings containing ceria.

KW - Ceria

KW - Erosion

KW - Hardness

KW - Heat treatment

KW - Thermal sprayed NiAl intermetallic coatings

UR - https://www.scopus.com/pages/publications/34748895569

U2 - 10.1016/j.wear.2006.12.003

DO - 10.1016/j.wear.2006.12.003

M3 - 文章

AN - SCOPUS:34748895569

SN - 0043-1648

VL - 263

SP - 371

EP - 378

JO - Wear

JF - Wear

IS - 1-6 SPEC. ISS.

ER -

Microstructures, hardness and erosion behavior of thermal sprayed and heat treated NiAl coatings with different ceria

Abstract

Keywords

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