H. Ardelean - Academia.edu (original) (raw)
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Papers by H. Ardelean
Applied Surface Science, 2002
Applied Surface Science, 2005
ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephtha... more ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephthalate (PET) films, modified by laser treatment below the polymer ablation threshold fluence in air and in helium at different wavelengths, fluences, pulse numbers and by low pressure plasma treatment in He 95% with O2 5%, at 0.2W/cm3 were investigated by XPS, AFM, water contact angle and adhesion measurements. XPS results revealed (i) formation of polar-oxygenated functional groups (CO, OCO) by laser treatments in air and (ii) incorporation of ester and ether groups by plasma treatment in He 95% with O2 5%. After deposition of thermally evaporated Al on laser or plasma treated PET films, U-Peel tests indicated that laser treatment in air at 248nm and 20mJ/cm2, and plasma treatment improved Al/PET adhesion. XPS studies revealed the presence of an increasing number of AlOC stable and cohesive interfacial complexes formed by chemical interaction between aluminium and the laser treated in air or plasma treated in He 95% with O2 5% PET films. These interfacial compounds play an important role in the enhancement of the metal/polymer adhesion.
EUROCON 2007 - The International Conference on "Computer as a Tool", 2007
Abstract This paper presents some considerations about fuel cell energy utilization instead of cl... more Abstract This paper presents some considerations about fuel cell energy utilization instead of classical backup sources for substation ancillary services. The main necessity of substation ancillary services is to stay supplied and one modern solution to supply the ...
2008 Conference on Human System Interactions, 2008
... 400 kV buses were being introduced to Resita, Timisoara and Sacalaz; 2) The 400 kV electrical... more ... 400 kV buses were being introduced to Resita, Timisoara and Sacalaz; 2) The 400 kV electrical line Porile de Fier - Anina - Reúia was ... according to the aims of the project), the real generators being introduced to medium voltage, together with the afferent block transformers . ...
Materials Science Forum, 2009
Materials and Corrosion, 2001
Applied Surface Science, 2002
Applied Surface Science, 2005
ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephtha... more ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephthalate (PET) films, modified by laser treatment below the polymer ablation threshold fluence in air and in helium at different wavelengths, fluences, pulse numbers and by low pressure plasma treatment in He 95% with O2 5%, at 0.2W/cm3 were investigated by XPS, AFM, water contact angle and adhesion measurements. XPS results revealed (i) formation of polar-oxygenated functional groups (CO, OCO) by laser treatments in air and (ii) incorporation of ester and ether groups by plasma treatment in He 95% with O2 5%. After deposition of thermally evaporated Al on laser or plasma treated PET films, U-Peel tests indicated that laser treatment in air at 248nm and 20mJ/cm2, and plasma treatment improved Al/PET adhesion. XPS studies revealed the presence of an increasing number of AlOC stable and cohesive interfacial complexes formed by chemical interaction between aluminium and the laser treated in air or plasma treated in He 95% with O2 5% PET films. These interfacial compounds play an important role in the enhancement of the metal/polymer adhesion.
Applied Surface Science, 2002
Applied Surface Science, 2005
ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephtha... more ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephthalate (PET) films, modified by laser treatment below the polymer ablation threshold fluence in air and in helium at different wavelengths, fluences, pulse numbers and by low pressure plasma treatment in He 95% with O2 5%, at 0.2W/cm3 were investigated by XPS, AFM, water contact angle and adhesion measurements. XPS results revealed (i) formation of polar-oxygenated functional groups (CO, OCO) by laser treatments in air and (ii) incorporation of ester and ether groups by plasma treatment in He 95% with O2 5%. After deposition of thermally evaporated Al on laser or plasma treated PET films, U-Peel tests indicated that laser treatment in air at 248nm and 20mJ/cm2, and plasma treatment improved Al/PET adhesion. XPS studies revealed the presence of an increasing number of AlOC stable and cohesive interfacial complexes formed by chemical interaction between aluminium and the laser treated in air or plasma treated in He 95% with O2 5% PET films. These interfacial compounds play an important role in the enhancement of the metal/polymer adhesion.
EUROCON 2007 - The International Conference on "Computer as a Tool", 2007
Abstract This paper presents some considerations about fuel cell energy utilization instead of cl... more Abstract This paper presents some considerations about fuel cell energy utilization instead of classical backup sources for substation ancillary services. The main necessity of substation ancillary services is to stay supplied and one modern solution to supply the ...
2008 Conference on Human System Interactions, 2008
... 400 kV buses were being introduced to Resita, Timisoara and Sacalaz; 2) The 400 kV electrical... more ... 400 kV buses were being introduced to Resita, Timisoara and Sacalaz; 2) The 400 kV electrical line Porile de Fier - Anina - Reúia was ... according to the aims of the project), the real generators being introduced to medium voltage, together with the afferent block transformers . ...
Materials Science Forum, 2009
Materials and Corrosion, 2001
Applied Surface Science, 2002
Applied Surface Science, 2005
ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephtha... more ABSTRACT Chemical functionalities, topography and adherence between Al and polyethylene terephthalate (PET) films, modified by laser treatment below the polymer ablation threshold fluence in air and in helium at different wavelengths, fluences, pulse numbers and by low pressure plasma treatment in He 95% with O2 5%, at 0.2W/cm3 were investigated by XPS, AFM, water contact angle and adhesion measurements. XPS results revealed (i) formation of polar-oxygenated functional groups (CO, OCO) by laser treatments in air and (ii) incorporation of ester and ether groups by plasma treatment in He 95% with O2 5%. After deposition of thermally evaporated Al on laser or plasma treated PET films, U-Peel tests indicated that laser treatment in air at 248nm and 20mJ/cm2, and plasma treatment improved Al/PET adhesion. XPS studies revealed the presence of an increasing number of AlOC stable and cohesive interfacial complexes formed by chemical interaction between aluminium and the laser treated in air or plasma treated in He 95% with O2 5% PET films. These interfacial compounds play an important role in the enhancement of the metal/polymer adhesion.