| abstract |
To provide a treatment liquid and a treatment method capable of further improving the corrosion resistance of a metal material. Formation of a film containing a silicon compound having at least one selected from the group consisting of an alkoxysilyl group, an alkoxysilylene group, and a siloxane bond, an organometallic compound, and water after forming a chemical conversion film on the surface of the metal material Form a film with the treatment solution. |