公开(公告)号：US11131014B2

公开(公告)日：2021-09-28

申请号：US15568445

申请日：2016-03-23

Applicant: TOCALO CO., LTD.

Inventor： Hiroki Yokota ,  Daisuke Kawai ,  Tatsuo Suidzu

IPC: B23K26/00 ,  C23C4/02 ,  B23K26/352 ,  C23C28/04 ,  C23C8/10 ,  C23C8/02 ,  C23C8/80 ,  C23C4/134

Abstract: A ceramic substrate is irradiated in an atmospheric air with a laser having a power density of 1.0×107-1.0×109 W/cm2 for an action time on an irradiation area of 1.0×10−7-1.0×10−5 s to roughen a surface of the ceramic substrate, as well as to form an oxide layer on a roughened surface. A thermal sprayed coating formed on the ceramic substrate sufficiently adheres to the ceramic substrate via the oxide layer.