Comparison of mechanisms and effects of Nd:YAG and CO2 laser cleaning of titanium alloys

M. W. Turner; P. L. Crouse; L. Li

doi:10.1016/j.apsusc.2005.06.050

Comparison of mechanisms and effects of Nd:YAG and CO2 laser cleaning of titanium alloys

M. W. Turner, P. L. Crouse, L. Li

Mechanical and Aerospace Engineering

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

Abstract

The paper compares laser cleaning trials performed using a Q-switched Nd:YAG laser, λ = 1.064 μm and a continuous wave (CW) CO2 laser, λ = 10.6 μm, applied to aerospace-grade, contaminated titanium alloys. The mechanisms for cleaning using each laser system are modelled to determine the mode and extent of contaminant removal. The model results are then compared with the surface chemistry and micro-structural results from the cleaning trials performed. The results show the dominant cleaning process for Nd:YAG cleaning to be by evaporation of the contaminant via conduction through surface heating, while for CO2 laser cleaning the small fraction of the beam coupling directly with the contaminant is sufficient for direct heating and selective evaporation. The results for experimental cleaning, electron beam (EB) welding and diffusion bonding align well with the model, particularly when secondary reactions are taken into account. © 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	4792-4797
Number of pages	5
Journal	Applied Surface Science
Volume	252
Issue number	13
DOIs	https://doi.org/10.1016/j.apsusc.2005.06.050
Publication status	Published - 30 Apr 2006

Keywords

Cleaning
Joining
Laser
Titanium

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10.1016/j.apsusc.2005.06.050

LPRC: Laser Processing Research Centre Impact
Allegre, O. (PI), Crosby, D. (PI), Domingos, M. (PI), Francis, J. (PI), Gillen, D. (PI), Guo, W. (PI), Li, L. (PI), Mativenga, P. (PI), Rogers, B. D. (PI), Whitehead, D. (PI), Wilson, D. (PI), Zhong, S. (PI), Mirhosseini, N. (Researcher), Ouyang, J. (Researcher), Huang, Y. (Researcher), Wei, C. (Researcher), Cheng, D. (PGR student), Suryo Pratomo, E. (PGR student), Zhang, Z. (PGR student), Li, Z. (PGR student), Mo, H. (PGR student), Zhu, M. (PGR student), Li, Q. (PGR student), Liu, W. (PGR student), Wang, L. (PGR student), Guo, H. (PGR student), Heinemann, R. (PI) & Liu, Z. (PI)
1/04/00 → …
Project: Research

Laser Cleaning for Aerospace Manufacturing
Li, L. (Participant), Turner, M. (Participant), Whitehead, D. (Participant), Crouse, P. (Participant), Wuo, W. (Participant), Marimuthu, S. (Participant) & Liu, Z. (Participant)
Impact: Economic, Technological

Cite this

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title = "Comparison of mechanisms and effects of Nd:YAG and CO2 laser cleaning of titanium alloys",

abstract = "The paper compares laser cleaning trials performed using a Q-switched Nd:YAG laser, λ = 1.064 μm and a continuous wave (CW) CO2 laser, λ = 10.6 μm, applied to aerospace-grade, contaminated titanium alloys. The mechanisms for cleaning using each laser system are modelled to determine the mode and extent of contaminant removal. The model results are then compared with the surface chemistry and micro-structural results from the cleaning trials performed. The results show the dominant cleaning process for Nd:YAG cleaning to be by evaporation of the contaminant via conduction through surface heating, while for CO2 laser cleaning the small fraction of the beam coupling directly with the contaminant is sufficient for direct heating and selective evaporation. The results for experimental cleaning, electron beam (EB) welding and diffusion bonding align well with the model, particularly when secondary reactions are taken into account. {\textcopyright} 2005 Elsevier B.V. All rights reserved.",

keywords = "Cleaning, Joining, Laser, Titanium",

author = "Turner, {M. W.} and Crouse, {P. L.} and L. Li",

year = "2006",

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doi = "10.1016/j.apsusc.2005.06.050",

language = "English",

volume = "252",

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journal = "Applied Surface Science",

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T1 - Comparison of mechanisms and effects of Nd:YAG and CO2 laser cleaning of titanium alloys

AU - Turner, M. W.

AU - Crouse, P. L.

AU - Li, L.

PY - 2006/4/30

Y1 - 2006/4/30

N2 - The paper compares laser cleaning trials performed using a Q-switched Nd:YAG laser, λ = 1.064 μm and a continuous wave (CW) CO2 laser, λ = 10.6 μm, applied to aerospace-grade, contaminated titanium alloys. The mechanisms for cleaning using each laser system are modelled to determine the mode and extent of contaminant removal. The model results are then compared with the surface chemistry and micro-structural results from the cleaning trials performed. The results show the dominant cleaning process for Nd:YAG cleaning to be by evaporation of the contaminant via conduction through surface heating, while for CO2 laser cleaning the small fraction of the beam coupling directly with the contaminant is sufficient for direct heating and selective evaporation. The results for experimental cleaning, electron beam (EB) welding and diffusion bonding align well with the model, particularly when secondary reactions are taken into account. © 2005 Elsevier B.V. All rights reserved.

AB - The paper compares laser cleaning trials performed using a Q-switched Nd:YAG laser, λ = 1.064 μm and a continuous wave (CW) CO2 laser, λ = 10.6 μm, applied to aerospace-grade, contaminated titanium alloys. The mechanisms for cleaning using each laser system are modelled to determine the mode and extent of contaminant removal. The model results are then compared with the surface chemistry and micro-structural results from the cleaning trials performed. The results show the dominant cleaning process for Nd:YAG cleaning to be by evaporation of the contaminant via conduction through surface heating, while for CO2 laser cleaning the small fraction of the beam coupling directly with the contaminant is sufficient for direct heating and selective evaporation. The results for experimental cleaning, electron beam (EB) welding and diffusion bonding align well with the model, particularly when secondary reactions are taken into account. © 2005 Elsevier B.V. All rights reserved.

KW - Cleaning

KW - Joining

KW - Laser

KW - Titanium

U2 - 10.1016/j.apsusc.2005.06.050

DO - 10.1016/j.apsusc.2005.06.050

M3 - Article

SN - 0169-4332

VL - 252

SP - 4792

EP - 4797

JO - Applied Surface Science

JF - Applied Surface Science

IS - 13

ER -

Comparison of mechanisms and effects of Nd:YAG and CO2 laser cleaning of titanium alloys

Abstract

Keywords

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Projects

LPRC: Laser Processing Research Centre Impact

Impacts

Laser Cleaning for Aerospace Manufacturing

Cite this