| US 7,575,644 B2 | ||
| Solution for treating metal surface, surface treating method, and surface treated material | ||
| Hideki Takakuwa, Kanagawa (Japan); Yuko Takanashi, Kanagawa (Japan); Katsutoshi Ando, Saitama (Japan); and Yasuhito Murai, Saitama (Japan) | ||
| Assigned to Nihon Parkerizing Co., Ltd., Tokyo (Japan); and Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Jun. 07, 2007, as Appl. No. 11/810,949. | ||
| Claims priority of application No. 2006-158306 (JP), filed on Jun. 07, 2006. | ||
| Prior Publication US 2008/0008902 A1, Jan. 10, 2008 | ||
| Int. Cl. C23F 11/00 (2006.01); B05D 1/00 (2006.01); B32B 15/18 (2006.01) | ||
| U.S. Cl. 148—247 [148/540; 148/548; 428/469; 428/639; 428/624; 428/626; 106/14.44; 427/445; 427/372.2] | 4 Claims |
| 1. A solution for treating a surface of an iron material comprising components (a), (b), (c), (d), and (e):
(a) zirconium fluoride;
(b) ion of a rare earth element and/or a compound containing a rare earth element;
(c) a polyallylamine;
(d) aluminum ion; and
(e) free fluorine ion, wherein
zirconium in the component (a) is included at a weight concentration A of 10 to 1000 ppm,
a ratio K of a weight concentration B of the rare earth element in the component (b) to the weight concentration A (K=B/A)
is 0.1 to 30,
the component (d) is included at a weight concentration D of 50 to 250 ppm, and
the component (e) is included at a weight concentration E of 0.5 to 30 ppm.
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