15º Encontro e Exposição Brasileira de Tratamentos de Superfície
4º INTERFINISH Latino Americano
ESTUDO ELETROQUÍMICO DE FILMES HÍBRIDOS À BASE DE TEOS E
GPTMS SOBRE A LIGA DE ALUMÍNIO
BRUNA SOARES DOS REIS ARANHA, ASSIS VICENTE BENEDETTI,
CECÍLIO SADAO FUGIVARA E PATRICIA
HATSUE SUEGAMA
UFGD - UNIVERSIDADE FEDERAL DA GRANDE DOURADOS / UNESP –
UNIVERSIDADE ESTADUAL PAULISTA BRASIL
Resumo
The chemical process for preparing rolling surfaces intended to eliminate or
scratch marks and improve the adhesion of coatings. A preparation solution to
the surface of aluminum alloys has been developed by our group, seeking the
best condition to provide aesthetic value to the sample and allowing the
accession of coatings. Among the changes only the bath containing NaOH,
NaCl, Na2SO4 and HNO3 added aesthetic value to the sample, and allows the
adhesion of the coating. Was deposited on AA6062T5 the hybrid binds
chemically treated film base TEOS / GPTMS varying the number of layers, 1 or
2, and curing time, 25oC/ 48 hours or 55oC/ 24h and 160oC/ 3h, and evaluated
the corrosion resistance. The results showed that the coating increased the life
of the substrate in contact with NaCl 3.5%. The sample that showed the best
effects were the barrier layers and two 48 hours cure time at 25oC.