Nd-YAG laser irradiation of pigments and binders in paint layers
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Sprache:Englisch
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Produktdetails
Format
ePUB
Kopierschutz
Nein
Family Sharing
Nein
Text-to-Speech
Ja
Erscheinungsdatum
09.06.2008
Verlag
GRINSeitenzahl
6 (Printausgabe)
Dateigröße
464 KB
Auflage
1. Auflage
Sprache
Englisch
EAN
9783638063104
Scientific Essay from the year 2003 in the subject Engineering - Civil Engineering, , course: EUROMAT 2003, language: English, abstract: Laser cleaning of polychrome surfaces is currently problematic due to the fact, that laser
irradiation can cause damage of the paint layers. A test program was worked out to
analyse the chemical and physical background of these typical "pigment blackening
effects". The analytical methods ESEM, XRD, DTA, FTIR and NMR were used to
describe the reactions of inorganic pigments and organic binding media caused by laser
irradiation. The used laser system is commercially available, is currently used for the
cleaning of natural stone surfaces and works at a wavelength of 1064 nm. The
discoloration of pigments and paint layers was documented by colour measurement.
Further the measurement of discoloration thresholds of energy density (of pigments and
paint layers) was a main part of the research.
irradiation can cause damage of the paint layers. A test program was worked out to
analyse the chemical and physical background of these typical "pigment blackening
effects". The analytical methods ESEM, XRD, DTA, FTIR and NMR were used to
describe the reactions of inorganic pigments and organic binding media caused by laser
irradiation. The used laser system is commercially available, is currently used for the
cleaning of natural stone surfaces and works at a wavelength of 1064 nm. The
discoloration of pigments and paint layers was documented by colour measurement.
Further the measurement of discoloration thresholds of energy density (of pigments and
paint layers) was a main part of the research.
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