To provide an aluminum or aluminum alloy material on the surface of which a surface-treated film retaining hydrophilicity, corrosion resistance, antimicrobial property, and antiodor property for a long period of time, and a method for the surface treatment.
The aluminum or aluminum alloy material has a first protective layer and a second protective layer on the surface of its base material in this order. The first protective layer is a chemically converted film containing at least one of metal selected from among vanadium, titanium, zirconium, and hafnium. The second protective layer is an organic film composed of a composition containing (1) a chitosan derivative and a solubilizer, (2) a modified polyvinyl alcohol to the side chain of which a hydrophilic polymer is graft-polymerized, and (3) a water-soluble crosslinking agent.
OKAMOTO YOSHIYUKI
NAKAMURA KENJI
HIROSE ATSUYUKI
KASEBE OSAMU
NISHITANI SHIN
KOBAYASHI KENGO
DENSO CORP
JP2009108111A | 2009-05-21 | |||
JP2000345362A | 2000-12-12 | |||
JP2008150585A | 2008-07-03 | |||
JP2009108111A | 2009-05-21 | |||
JP2000345362A | 2000-12-12 | |||
JP2008150585A | 2008-07-03 |