Reaction behavior and wear properties of in-situ air plasma-sprayed Al<sub>2</sub>O<sub>3</sub>-TiB<sub>2</sub> composite coatings

Journal article (2023)

Authors

Seyed Hossein Mirhosseini Yazd University
Masoud Mosallaee Yazd University
Mansour Razavi Materials and Energy Research Center
M. Fotouhi Materials and Environment - CEG
Research Group
Materials and Environment (CEG) (TU Delft)
Copyright: © 2023 Seyed Hossein Mirhosseini, Masoud Mosallaee, Mansour Razavi, M. Fotouhi
DOI
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https://doi.org/10.1016/j.jeurceramsoc.2023.06.067
In-situ Milling Ceramic Coatings Plasma spray Wear resistance
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Published Date

2023

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

Abstract

In this study, Al2O3-TiB2 coating was successfully deposited on steel substrates by in situ plasma spraying (IPS) using H3BO3, Al, and TiO2 reactants. Beside TiB2 and Al2O3, Al18B4O33 was formed as a by-product with ratio of about 13 wt%. The effect of milling time of reactant and the reaction behavior was also explored. Milling process for at least 10 h can promote efficiency of reaction and milling for efficient production of Al2O3-TiB2 composite. Wear behavior was examined in terms of hardness, wear track width, and wear rate of the coatings with respective measured values of 797.6 HV, 1061.3 µm, and 4.2 × 10−3 mm3/N.m. Based on the FESEM observations, the thickness of abrasive coating was 417 µm, delamination and adhesion were the main wear mechanisms in Al2O3-TiB2-coated specimens.