Utilização de plasma na remoção de oleo da superficie de aluminio / Plasma use in the oil rremoval of the aluminium surface

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The increasing concern with the sustainable development ally with a bigger awareness with regard to the preservation of the environment has stimulated research in the most diverse areas of ambient correct technologies. Inside of this context the cold plasma technology represents an efficient, ambient correct and economic alternative for cleanness of the aluminum surface. It was analyzed and argued the influence of the power of the generator, sputtering time, type of gas and pressure of work on the angle of contact with water. This work is the first stage of the project of modification of the aluminum surface coordinated by professor Edison Bittencourt. The project as a whole consists of three stages (cleaning, protection and activation) and has the intention to substitute the chemical process of cleanness, protection the corrosion and activation of the surface for plasma process. With regard to second stage already they had been carried through, in the Institute of Physics for the physicist Carlos Salles Lambert, some assays of deposition of Hexametildisiloxano had shown to be excellent corrosion protectors, however, this second stage will not be argued in this work but in posterior works. In this work lubricative and protective oil was removed by gases such as oxygen, hydrogen, argon and the mixtures: oxygen and argon, hydrogen and argon. It was analyzed and argued the influence of the power of the generator, time of bombardment, type of gas and pressure of work on the angle of contact with water. The removal of the oil was analyzed in terms of the measure of the angle of contact with water and ethylene glycol and of the analysis of XPS.The experiments were carried out according experimental planning techniques where the obtained experimental results analyses had been carried through the Response Surface Methodology. The analysis of effect of the independent variable on the process answer variables had been used in the construction of an empirical model, aiming to predit the process behavior. The analysis of the obtained models was carried out using the variance analysis (ANOVA). The independent variable used had been: power of the generator, sputtering time, type of gas and pressure of work. The results obtained indicate that it is possible to remove the oil of the aluminum surface using the cold plasma process

ASSUNTO(S)

plasma oil aluminio - revestimento plasma (ionized gases) cleaning aluminium lining limpeza superficies - preparação xps surface preparation

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