公开(公告)号：US20240318292A1

公开(公告)日：2024-09-26

申请号：US18574476

申请日：2022-06-29

申请人： JFE STEEL CORPORATION ,  TOCALO CO., LTD.

发明人： Tatsumichi YAMADA ,  Chihiro KONDO ,  Ichiro TANOKUCHI ,  Shinichi OKUNO ,  Masayasu UENO ,  Tatsuo SUIDZU ,  Kei YAMAGUCHI

IPC分类号： C23C4/073 ,  C22C19/07 ,  C23C4/18

CPC分类号： C23C4/073 ,  C22C19/07 ,  C23C4/18

摘要： A coating material and a surface coating method for an in-furnace structure, and an in-furnace structure that are excellent in resistance to corrosion by the sulfur group. The coating material for an in-furnace structure used in a high-temperature corrosive environment including a sulfur group element includes as component composition, by mass, Co: 45% to 72%, both inclusive, Mo: 20% to 35%, both inclusive, Cr: 8% to 25%, both inclusive, and Si: 0.1% to 5%, both inclusive, and substantially without Ni. In the surface coating method used in a high-temperature corrosive environment including a sulfur group element, a coating is formed on a surface of the in-furnace structure by overlay welding or thermal spraying of the above-described coating material. In the in-furnace structure used in a high-temperature corrosive environment including a sulfur group element, a coating using the above-described coating material is formed on a surface of the in-furnace structure.