A protective SiAlN coating on topographic surface of laser powder bed fusion manufactured Ti alloy

Zhaohe Gao; Xun Zhang; Sheng Cao; Justyna Kulczyk-Malecka; Shiying Qin; Xiaodong Liu; Peter Kelly; Xinhua Wu; Ping Xiao; Yu-Lung Chiu

doi:10.1016/j.corsci.2023.111250

A protective SiAlN coating on topographic surface of laser powder bed fusion manufactured Ti alloy

Zhaohe Gao^*
, Xun Zhang
, Sheng Cao
, Justyna Kulczyk-Malecka
, Shiying Qin
, Xiaodong Liu
, Peter Kelly
, Xinhua Wu
, Ping Xiao^*
, Yu-Lung Chiu^*

^*Corresponding author for this work

Metallurgy and Materials

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

Abstract

Protective SiAlN coating with Mo interlayer has been directly deposited onto as-built topographic surface of laser-based powder bed fusion manufactured Ti6Al4V alloy where high surface roughness, even with irregular geometrical features and native oxide scale on it. The topographic surface of Ti6Al4V is well protected by SiAlN/Mo coatings without spallation, cracks or even oxidation after 50 h of exposure at 800 °C for 10 cycles in air. The conformal nature of sputtered SiAlN/Mo coatings enables topographic surface to be well covered, and Mo diffuses through thin native oxide scale on topographic surface into Ti alloy, thereby forming strong chemical bonding between coatings and Ti substrates.

Original language	English
Article number	111250
Number of pages	11
Journal	Corrosion Science
Volume	219
Early online date	5 May 2023
DOIs	https://doi.org/10.1016/j.corsci.2023.111250
Publication status	Published - 15 Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Chemical bonding
Laser powder bed fusion
Magnetron sputtering
Oxidation protection
SiAlN coating
Topographic surface

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

Access to Document

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https://e-space.mmu.ac.uk/id/eprint/631978Licence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

Cite this

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title = "A protective SiAlN coating on topographic surface of laser powder bed fusion manufactured Ti alloy",

abstract = "Protective SiAlN coating with Mo interlayer has been directly deposited onto as-built topographic surface of laser-based powder bed fusion manufactured Ti6Al4V alloy where high surface roughness, even with irregular geometrical features and native oxide scale on it. The topographic surface of Ti6Al4V is well protected by SiAlN/Mo coatings without spallation, cracks or even oxidation after 50 h of exposure at 800 °C for 10 cycles in air. The conformal nature of sputtered SiAlN/Mo coatings enables topographic surface to be well covered, and Mo diffuses through thin native oxide scale on topographic surface into Ti alloy, thereby forming strong chemical bonding between coatings and Ti substrates.",

keywords = "Chemical bonding, Laser powder bed fusion, Magnetron sputtering, Oxidation protection, SiAlN coating, Topographic surface",

author = "Zhaohe Gao and Xun Zhang and Sheng Cao and Justyna Kulczyk-Malecka and Shiying Qin and Xiaodong Liu and Peter Kelly and Xinhua Wu and Ping Xiao and Yu-Lung Chiu",

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doi = "10.1016/j.corsci.2023.111250",

language = "English",

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T1 - A protective SiAlN coating on topographic surface of laser powder bed fusion manufactured Ti alloy

AU - Gao, Zhaohe

AU - Zhang, Xun

AU - Cao, Sheng

AU - Kulczyk-Malecka, Justyna

AU - Qin, Shiying

AU - Liu, Xiaodong

AU - Kelly, Peter

AU - Wu, Xinhua

AU - Xiao, Ping

AU - Chiu, Yu-Lung

PY - 2023/7/15

Y1 - 2023/7/15

N2 - Protective SiAlN coating with Mo interlayer has been directly deposited onto as-built topographic surface of laser-based powder bed fusion manufactured Ti6Al4V alloy where high surface roughness, even with irregular geometrical features and native oxide scale on it. The topographic surface of Ti6Al4V is well protected by SiAlN/Mo coatings without spallation, cracks or even oxidation after 50 h of exposure at 800 °C for 10 cycles in air. The conformal nature of sputtered SiAlN/Mo coatings enables topographic surface to be well covered, and Mo diffuses through thin native oxide scale on topographic surface into Ti alloy, thereby forming strong chemical bonding between coatings and Ti substrates.

AB - Protective SiAlN coating with Mo interlayer has been directly deposited onto as-built topographic surface of laser-based powder bed fusion manufactured Ti6Al4V alloy where high surface roughness, even with irregular geometrical features and native oxide scale on it. The topographic surface of Ti6Al4V is well protected by SiAlN/Mo coatings without spallation, cracks or even oxidation after 50 h of exposure at 800 °C for 10 cycles in air. The conformal nature of sputtered SiAlN/Mo coatings enables topographic surface to be well covered, and Mo diffuses through thin native oxide scale on topographic surface into Ti alloy, thereby forming strong chemical bonding between coatings and Ti substrates.

KW - Chemical bonding

KW - Laser powder bed fusion

KW - Magnetron sputtering

KW - Oxidation protection

KW - SiAlN coating

KW - Topographic surface

UR - https://www.scopus.com/pages/publications/85158000246

U2 - 10.1016/j.corsci.2023.111250

DO - 10.1016/j.corsci.2023.111250

M3 - Article

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JO - Corrosion Science

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A protective SiAlN coating on topographic surface of laser powder bed fusion manufactured Ti alloy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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