Annealing behavior of Ni-TiO2 nanocomposites

T. E. Niu; Weiwei Chen; Huanwu Chen; L. U. Wang

doi:10.1142/S0218625X19500690

Annealing behavior of Ni-TiO₂ nanocomposites

T. E. Niu, Weiwei Chen^*, Huanwu Chen, L. U. Wang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

1 Citation (Scopus)

Abstract

Ni-TiO₂ nanocomposite have been prepared by electrodeposition. The microstructure and tribological behavior of Ni-TiO₂ nanocomposite before and after annealing have been investigated compared with as-deposited Ni-TiO₂ composite. The results demonstrated that TiO₂ nanoparticles usually collected along the grain boundaries and nickel grains changed from columnar grains into equiaxed grains after annealing. HRTEM photographs indicated that the diffusion between crystalline nickel and TiO₂ nanoparticles did happen after annealing. Wear results indicated that the main wear mechanism of as-deposited Ni-TiO₂ nanocomposite was adhesion wear. The wear resistance of Ni-TiO₂ nanocomposite heat-treated is better than as-deposited Ni-TiO₂ nanocomposite because the oxidation layers on the worn surface of Ni-TiO₂ nanocomposite masked the strengthening effect of small grain size. The corrosion behavior also has been studied and it is found that annealing reduces the corrosion resistance of composite coatings.

Original language	English
Article number	1950069
Journal	Surface Review and Letters
Volume	26
Issue number	10
DOIs	https://doi.org/10.1142/S0218625X19500690
Publication status	Published - 1 Dec 2019

Keywords

Nanocrystalline
corrosion
microstructure
nanocomposites
wear

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title = "Annealing behavior of Ni-TiO2 nanocomposites",

abstract = "Ni-TiO2 nanocomposite have been prepared by electrodeposition. The microstructure and tribological behavior of Ni-TiO2 nanocomposite before and after annealing have been investigated compared with as-deposited Ni-TiO2 composite. The results demonstrated that TiO2 nanoparticles usually collected along the grain boundaries and nickel grains changed from columnar grains into equiaxed grains after annealing. HRTEM photographs indicated that the diffusion between crystalline nickel and TiO2 nanoparticles did happen after annealing. Wear results indicated that the main wear mechanism of as-deposited Ni-TiO2 nanocomposite was adhesion wear. The wear resistance of Ni-TiO2 nanocomposite heat-treated is better than as-deposited Ni-TiO2 nanocomposite because the oxidation layers on the worn surface of Ni-TiO2 nanocomposite masked the strengthening effect of small grain size. The corrosion behavior also has been studied and it is found that annealing reduces the corrosion resistance of composite coatings.",

keywords = "Nanocrystalline, corrosion, microstructure, nanocomposites, wear",

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T1 - Annealing behavior of Ni-TiO2 nanocomposites

AU - Niu, T. E.

AU - Chen, Weiwei

AU - Chen, Huanwu

AU - Wang, L. U.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Ni-TiO2 nanocomposite have been prepared by electrodeposition. The microstructure and tribological behavior of Ni-TiO2 nanocomposite before and after annealing have been investigated compared with as-deposited Ni-TiO2 composite. The results demonstrated that TiO2 nanoparticles usually collected along the grain boundaries and nickel grains changed from columnar grains into equiaxed grains after annealing. HRTEM photographs indicated that the diffusion between crystalline nickel and TiO2 nanoparticles did happen after annealing. Wear results indicated that the main wear mechanism of as-deposited Ni-TiO2 nanocomposite was adhesion wear. The wear resistance of Ni-TiO2 nanocomposite heat-treated is better than as-deposited Ni-TiO2 nanocomposite because the oxidation layers on the worn surface of Ni-TiO2 nanocomposite masked the strengthening effect of small grain size. The corrosion behavior also has been studied and it is found that annealing reduces the corrosion resistance of composite coatings.

AB - Ni-TiO2 nanocomposite have been prepared by electrodeposition. The microstructure and tribological behavior of Ni-TiO2 nanocomposite before and after annealing have been investigated compared with as-deposited Ni-TiO2 composite. The results demonstrated that TiO2 nanoparticles usually collected along the grain boundaries and nickel grains changed from columnar grains into equiaxed grains after annealing. HRTEM photographs indicated that the diffusion between crystalline nickel and TiO2 nanoparticles did happen after annealing. Wear results indicated that the main wear mechanism of as-deposited Ni-TiO2 nanocomposite was adhesion wear. The wear resistance of Ni-TiO2 nanocomposite heat-treated is better than as-deposited Ni-TiO2 nanocomposite because the oxidation layers on the worn surface of Ni-TiO2 nanocomposite masked the strengthening effect of small grain size. The corrosion behavior also has been studied and it is found that annealing reduces the corrosion resistance of composite coatings.

KW - Nanocrystalline

KW - corrosion

KW - microstructure

KW - nanocomposites

KW - wear

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JO - Surface Review and Letters

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Annealing behavior of Ni-TiO₂ nanocomposites

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