METAL SURFACE TREATMENT AGENT, SURFACE TREATED STEEL MATERIAL AND SURFACE TREATMENT METHOD THEREFOR, AND COATED STEEL MATERIAL AND PRODUCTION METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a non-chromate metal surface treatment agent which is most suitable for metal, particularly for a metal coated steel material, free from chromium, and can impart excellent processability, adhesiveness and corrosion resistance to the metal when used as pretreatment for the coating of paint or the like; a surface treated steel material which is surface-treated with the treatment agent and a surface treatment method therefor; and a coated steel material having an upper layer coating thereon and a production method therefor.;SOLUTION: The metal surface treatment agent includes a silane coupling agent containing a coordinating functional group as an indispensable component, and is formed by dissolving the silane coupling agent in water and/or an organic solvent.;COPYRIGHT: (C)2013,JPO&INPIT