公开(公告)号：US10752996B2

公开(公告)日：2020-08-25

申请号：US15740306

申请日：2016-06-22

申请人： Nihon Parkerizing Co., Ltd

发明人： Takeru Azuma ,  Atsushi Moriyama ,  Masayasu Ara

IPC分类号： C25D13/20 ,  C23C28/00 ,  C23C22/83 ,  C23C22/07 ,  C25D9/02

摘要： A surface treatment agent which is chromate-free and which can impart excellent coating adhesion and corrosion resistance to a metal material (in particular, a metal material treated with a phosphate), a surface treatment method that uses the surface treatment agent, and a surface treated metal material that is treated using the method are provided. The agent is for a metal material and contains a water-soluble ethylene glycol monoalkyl ether. It is preferable for this surface treatment agent to contain at least one type of metal compound selected from among a water-soluble vanadium compound, a water-soluble titanium compound, a water-soluble zirconium compound and a water-soluble hafnium compound.