公开(公告)号：US11299639B2

公开(公告)日：2022-04-12

申请号：US16471889

申请日：2017-12-22

申请人： POSCO

发明人： Yeon-Ho Kim ,  Yong-Woon Kim ,  Yung-Keun Kim ,  Yon-Kyun Song

IPC分类号： B32B15/08 ,  B32B15/18 ,  C23C2/02 ,  C23C2/26 ,  C25D3/22 ,  C25D5/48 ,  C09D7/61 ,  C09D171/02 ,  C23C2/06 ,  C23C28/00 ,  C23C4/11 ,  C23C14/08 ,  C23C14/16 ,  C23C14/58 ,  C23C16/40 ,  C08K3/22 ,  B05D7/14 ,  C23C30/00 ,  C23C2/40 ,  B32B15/04 ,  B32B15/20 ,  B32B15/01 ,  C08K3/08 ,  C08K3/24 ,  C22C18/04

摘要： Provided are a zinc-base plated steel material comprising a base steel and a zinc-based plated layer and a post-treatment film, which are sequentially formed on the base steel. The post-treatment film comprises an oxide or oxide salt of at least one group A element selected from B, Al, V, and Fe and an organic compound, wherein the content of oxygen atoms in the post-treatment film is 50 atom % or more, and wherein when the mole number of oxygen atoms forming a covalent bond with hydrogen in the post-treatment film is a and the mole number of oxygen atoms not forming the covalent bond with hydrogen is b, a/b is 0.3 or greater; and a composition for forming the post-treatment film.

公开(公告)号：US11255010B2

公开(公告)日：2022-02-22

申请号：US17014460

申请日：2020-09-08

申请人： POSCO

发明人： Yeon-Ho Kim ,  Yung-Keun Kim ,  Young-Jun Park ,  Yong-Woon Kim

IPC分类号： B32B15/04 ,  C23C2/26 ,  C09D1/00 ,  C23C22/40 ,  C23C18/00 ,  C23C20/00 ,  C23C2/40 ,  C23C22/46 ,  C23C20/02 ,  C23C20/04 ,  C23C20/06 ,  C23C22/68 ,  C23C30/00 ,  B32B15/01 ,  C23C22/06 ,  C23C22/48 ,  C23C22/00 ,  C23C22/53 ,  C23C2/06 ,  B32B15/18 ,  C23C22/74 ,  C23C22/05

摘要： Provided is a zinc-based plated steel sheet having a post-treated coating filmed thereon including: a steel sheet; a zinc plated layer formed on the steel sheet; and a post-treated coating formed on the plated layer, wherein the atomic ratio (O/M) of oxygen (O) to metals (M) contained in the post-treated coating is greater than 2 and less than 20, and a method for post-treating a zinc-based plated steel sheet. According to this, the zinc-based plated steel sheet having the post-treated coating formed thereon has the effects excellent in lubricity, weldability, adhesiveness, film-removing property and paintability. As the method of post-treating a zinc-based plated steel sheet of the present invention employs a simple coating method irrespective of the kind of plating layer, the process is simple and economical and the process operation cost is low.