Frishauf, Holtz, Goodman & Chick, P.C.
Coated steel sheet having excellent corrosion resistance and method for producing the same
A coated steel sheet having excellent corrosion resistance comprises: a zinc or a zinc alloy plated steel sheet or an aluminum or an aluminum alloy plated steel sheet; a composite oxide coating formed on the surface of the plated steel sheet; and an organic coating formed on the composite oxide coating. The composite oxide coating contains a fine particle oxide and a phosphoric acid and/or a phosphoric acid compound. The organic coating has thickness of from 0.1 to 5 &mgr;m.
NKK Corporation
B B C C B C C C Y C Y C
B05D B05D C09D C09D B05D C23C C23C C23C Y10T C23C Y10T C23C
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Takahiro Akihiko Masaru Naoto Kenichi Satoru Masaaki Takafumi Tatsuya Akira Yasuhiko Hiroyasu
Kubota Furuta Sagiyama Yoshimi Tomita Ando Yamashita Yamaji Miyoshi Matsuzaki Haruta Matsuki