Laser Cladding of Hard TiO xN y/Ti Composite Coating on Ti Alloy

17 Pages Posted: 6 May 2020

See all articles by Yitian Zhao

Yitian Zhao

University of Queensland - School of Mechanical and Mining Engineering

Mingyuan Lu

University of Queensland - School of Mechanical and Mining Engineering

Zhiqi Fan

University of Queensland - School of Mechanical and Mining Engineering

Qiyang Tan

University of Queensland - School of Mechanical and Mining Engineering

Han Huang

University of Queensland - School of Mechanical and Mining Engineering

Abstract

The notoriously low wear resistance of Ti alloys is impeding their engineering applications. In this work, a novel TiOxNy/α-Ti composite coating was developed by laser cladding TiO2 powders on a Ti-6Al-4V substrate in air. TiOxNy reinforcements were synthesized in situ via atmospheric nitriding of TiOx, chemically bonded with α-Ti matrix that solidified from the partially-melted substrate. The coating has an average hardness of 1417 HV0.3 (quadruple that of Ti-6Al-4V), superior to most composite coatings reported previously. The exceptionally high hardness of TiOxNy is attributed to its high nitrogen content and the presence of stacking faults.

Keywords: Laser deposition, Nitriding, Metal matrix composites (MMC), Interfaces, Hardness

Suggested Citation

Zhao, Yitian and Lu, Mingyuan and Fan, Zhiqi and Tan, Qiyang and Huang, Han, Laser Cladding of Hard TiO xN y/Ti Composite Coating on Ti Alloy. Available at SSRN: https://ssrn.com/abstract=3582190 or http://dx.doi.org/10.2139/ssrn.3582190

Yitian Zhao

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Mingyuan Lu

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Zhiqi Fan

University of Queensland - School of Mechanical and Mining Engineering ( email )

St Lucia
Brisbane, Queensland 4072
Australia

Qiyang Tan

University of Queensland - School of Mechanical and Mining Engineering

St Lucia
Brisbane, Queensland 4072
Australia

Han Huang (Contact Author)

University of Queensland - School of Mechanical and Mining Engineering ( email )

St Lucia
Brisbane, Queensland 4072
Australia

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