| 摘要 |
<p>Disclosed is an inorganic chromium-free metal surface treatment agent that contains a metal X<sup>1</sup>-containing compound X, the ionic species of which containing the metal X<sup>1</sup> become cations in an aqueous solution, and a metal Y<sup>1</sup>-containing compound Y, the ionic species of which containing the metal Y<sup>1</sup> become anions in an aqueous solution. The total amount of the compound X is 0.01-10% by mass, the total amount of the compound Y is 0.01-10% by mass, and the molar ratio of the metal X<sup>1</sup> in the cations to the metal Y<sup>1</sup> in the anions is 0.1-5. The metal X<sup>1</sup> is composed of at least one element that is selected from the group consisting of Ti, Zr and Al, and the metal Y<sup>1</sup> is composed of at least one element that is selected from the group consisting of Ti, Zr, Si, B and Al. The inorganic chromium-free metal surface treatment agent does not substantially contain an organic resin.</p> |
