Microstructure and wear behaviour of laser-induced thermite reaction Al2O3 ceramic coatings on pure aluminum and AA7075 aluminum alloy

Kaijin Huang; Xin Lin; Changsheng Xie; T. M. Yue

doi:10.1007/s11595-006-1089-7

Microstructure and wear behaviour of laser-induced thermite reaction Al₂O₃ ceramic coatings on pure aluminum and AA7075 aluminum alloy

Kaijin Huang, Xin Lin, Changsheng Xie, T. M. Yue

School of Materials Sience and Engineering

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

19 Scopus citations

Abstract

Wear-resistant laser-induced thermite reaction Al₂O₃ ceramic coatings can be fabricated on pure Al and AA7075 aluminum alloy by laser cladding (one-step method) and laser cladding followed by laser re-melting (two-step method) using mixed powders CuO-Al-SiO₂ in order to improve the wear properties of aluminum and aluminum alloy, respectively. The microstructure of the coatings was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The wear resistance of the coatings was evaluated under dry sliding wear test condition at room temperature. Owing to the presence of hard α-Al₂O₃ and γ-Al ₂O₃ phases, the coatings exhibited excellent wear resistance. In addition, the wear resistance of the coatings fabricated by two-step method is superior to that of the coatings fabricated by one-step method.

Original language	English
Pages (from-to)	89-94
Number of pages	6
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	23
Issue number	1
DOIs	https://doi.org/10.1007/s11595-006-1089-7
State	Published - Feb 2008

Keywords

Aluminum alloy
Laser cladding
Thermite reaction
Wear

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10.1007/s11595-006-1089-7

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title = "Microstructure and wear behaviour of laser-induced thermite reaction Al2O3 ceramic coatings on pure aluminum and AA7075 aluminum alloy",

abstract = "Wear-resistant laser-induced thermite reaction Al2O3 ceramic coatings can be fabricated on pure Al and AA7075 aluminum alloy by laser cladding (one-step method) and laser cladding followed by laser re-melting (two-step method) using mixed powders CuO-Al-SiO2 in order to improve the wear properties of aluminum and aluminum alloy, respectively. The microstructure of the coatings was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The wear resistance of the coatings was evaluated under dry sliding wear test condition at room temperature. Owing to the presence of hard α-Al2O3 and γ-Al 2O3 phases, the coatings exhibited excellent wear resistance. In addition, the wear resistance of the coatings fabricated by two-step method is superior to that of the coatings fabricated by one-step method.",

keywords = "Aluminum alloy, Laser cladding, Thermite reaction, Wear",

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T1 - Microstructure and wear behaviour of laser-induced thermite reaction Al2O3 ceramic coatings on pure aluminum and AA7075 aluminum alloy

AU - Huang, Kaijin

AU - Lin, Xin

AU - Xie, Changsheng

AU - Yue, T. M.

PY - 2008/2

Y1 - 2008/2

N2 - Wear-resistant laser-induced thermite reaction Al2O3 ceramic coatings can be fabricated on pure Al and AA7075 aluminum alloy by laser cladding (one-step method) and laser cladding followed by laser re-melting (two-step method) using mixed powders CuO-Al-SiO2 in order to improve the wear properties of aluminum and aluminum alloy, respectively. The microstructure of the coatings was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The wear resistance of the coatings was evaluated under dry sliding wear test condition at room temperature. Owing to the presence of hard α-Al2O3 and γ-Al 2O3 phases, the coatings exhibited excellent wear resistance. In addition, the wear resistance of the coatings fabricated by two-step method is superior to that of the coatings fabricated by one-step method.

AB - Wear-resistant laser-induced thermite reaction Al2O3 ceramic coatings can be fabricated on pure Al and AA7075 aluminum alloy by laser cladding (one-step method) and laser cladding followed by laser re-melting (two-step method) using mixed powders CuO-Al-SiO2 in order to improve the wear properties of aluminum and aluminum alloy, respectively. The microstructure of the coatings was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The wear resistance of the coatings was evaluated under dry sliding wear test condition at room temperature. Owing to the presence of hard α-Al2O3 and γ-Al 2O3 phases, the coatings exhibited excellent wear resistance. In addition, the wear resistance of the coatings fabricated by two-step method is superior to that of the coatings fabricated by one-step method.

KW - Aluminum alloy

KW - Laser cladding

KW - Thermite reaction

KW - Wear

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Microstructure and wear behaviour of laser-induced thermite reaction Al₂O₃ ceramic coatings on pure aluminum and AA7075 aluminum alloy

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Keywords

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