Comparison of CO                         2                         , Nd:YAG and high power diode lasers for the ablation of tile grout

K. Minami; J. Lawrence; L. Li; R. E. Edwards; A. W. Gale

doi:10.1016/S0169-4332(01)00603-1

Comparison of CO ₂ , Nd:YAG and high power diode lasers for the ablation of tile grout

K. Minami, J. Lawrence, L. Li, R. E. Edwards, A. W. Gale

University of Manchester

Research output: Contribution to journal › Conference article › peer-review

10 Citations (Scopus)

Abstract

Process feasibility of a laser-based grout removal process and the effects thereof on the processing parameters have been successfully examined using three different lasers: CO ₂ , Nd:YAG and HPDL (high power diode laser). The grout removal rate was found to increase linearly with laser power level. In contrast, it was affected very little by laser traverse speed. The optimum removal rate was obtained with the CO ₂ laser and this occurrence was believed to be due to the CO ₂ laser's wavelength. Surface morphological and material characterisation on the laser-removed grout was carried out. Depending on the laser used, colour ranged from white to dark grey. Significant differences between the untreated and laser-treated samples, as well as between the samples treated by the different lasers, were observed. The CO ₂ laser produced relatively larger sized particles, with the Nd:YAG and HPDL generating finer particles exhibiting a similar appearance. An energy depressive X-ray (EDX) and an X-ray diffraction analysis (XRD) of the epoxy grout chemical composition before and after the laser treatment revealed that CaCO ₃ (limestone) was decomposed to give CaO and CO ₂ during laser interaction. The existence of SiO ₂ , Ti and dolomite was also found in the original grout material. thermogravimetric and differential thermal analysis (TG-DTA) identified a sequence of three stages in the thermal history of the epoxy grout.

Original language	English
Pages (from-to)	256-263
Number of pages	8
Journal	Applied Surface Science
Volume	186
Issue number	1-4
DOIs	https://doi.org/10.1016/S0169-4332(01)00603-1
Publication status	Published - 28 Jan 2002
Externally published	Yes
Event	European Materials Research Society 2001 Symposium - Strasbourg, France Duration: 5 Jun 2001 → 5 Jun 2001

Keywords

CO laser
Grout
HPDL
Nd:YAG laser
Removal

ASJC Scopus subject areas

Surfaces, Coatings and Films

Access to Document

10.1016/S0169-4332(01)00603-1

Cite this

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title = "Comparison of CO 2 , Nd:YAG and high power diode lasers for the ablation of tile grout",

abstract = " Process feasibility of a laser-based grout removal process and the effects thereof on the processing parameters have been successfully examined using three different lasers: CO 2 , Nd:YAG and HPDL (high power diode laser). The grout removal rate was found to increase linearly with laser power level. In contrast, it was affected very little by laser traverse speed. The optimum removal rate was obtained with the CO 2 laser and this occurrence was believed to be due to the CO 2 laser's wavelength. Surface morphological and material characterisation on the laser-removed grout was carried out. Depending on the laser used, colour ranged from white to dark grey. Significant differences between the untreated and laser-treated samples, as well as between the samples treated by the different lasers, were observed. The CO 2 laser produced relatively larger sized particles, with the Nd:YAG and HPDL generating finer particles exhibiting a similar appearance. An energy depressive X-ray (EDX) and an X-ray diffraction analysis (XRD) of the epoxy grout chemical composition before and after the laser treatment revealed that CaCO 3 (limestone) was decomposed to give CaO and CO 2 during laser interaction. The existence of SiO 2 , Ti and dolomite was also found in the original grout material. thermogravimetric and differential thermal analysis (TG-DTA) identified a sequence of three stages in the thermal history of the epoxy grout.",

keywords = "CO laser, Grout, HPDL, Nd:YAG laser, Removal",

author = "K. Minami and J. Lawrence and L. Li and Edwards, {R. E.} and Gale, {A. W.}",

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TY - JOUR

T1 - Comparison of CO 2 , Nd:YAG and high power diode lasers for the ablation of tile grout

AU - Minami, K.

AU - Lawrence, J.

AU - Li, L.

AU - Edwards, R. E.

AU - Gale, A. W.

PY - 2002/1/28

Y1 - 2002/1/28

N2 - Process feasibility of a laser-based grout removal process and the effects thereof on the processing parameters have been successfully examined using three different lasers: CO 2 , Nd:YAG and HPDL (high power diode laser). The grout removal rate was found to increase linearly with laser power level. In contrast, it was affected very little by laser traverse speed. The optimum removal rate was obtained with the CO 2 laser and this occurrence was believed to be due to the CO 2 laser's wavelength. Surface morphological and material characterisation on the laser-removed grout was carried out. Depending on the laser used, colour ranged from white to dark grey. Significant differences between the untreated and laser-treated samples, as well as between the samples treated by the different lasers, were observed. The CO 2 laser produced relatively larger sized particles, with the Nd:YAG and HPDL generating finer particles exhibiting a similar appearance. An energy depressive X-ray (EDX) and an X-ray diffraction analysis (XRD) of the epoxy grout chemical composition before and after the laser treatment revealed that CaCO 3 (limestone) was decomposed to give CaO and CO 2 during laser interaction. The existence of SiO 2 , Ti and dolomite was also found in the original grout material. thermogravimetric and differential thermal analysis (TG-DTA) identified a sequence of three stages in the thermal history of the epoxy grout.

AB - Process feasibility of a laser-based grout removal process and the effects thereof on the processing parameters have been successfully examined using three different lasers: CO 2 , Nd:YAG and HPDL (high power diode laser). The grout removal rate was found to increase linearly with laser power level. In contrast, it was affected very little by laser traverse speed. The optimum removal rate was obtained with the CO 2 laser and this occurrence was believed to be due to the CO 2 laser's wavelength. Surface morphological and material characterisation on the laser-removed grout was carried out. Depending on the laser used, colour ranged from white to dark grey. Significant differences between the untreated and laser-treated samples, as well as between the samples treated by the different lasers, were observed. The CO 2 laser produced relatively larger sized particles, with the Nd:YAG and HPDL generating finer particles exhibiting a similar appearance. An energy depressive X-ray (EDX) and an X-ray diffraction analysis (XRD) of the epoxy grout chemical composition before and after the laser treatment revealed that CaCO 3 (limestone) was decomposed to give CaO and CO 2 during laser interaction. The existence of SiO 2 , Ti and dolomite was also found in the original grout material. thermogravimetric and differential thermal analysis (TG-DTA) identified a sequence of three stages in the thermal history of the epoxy grout.

KW - CO laser

KW - Grout

KW - HPDL

KW - Nd:YAG laser

KW - Removal

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