Invention Grant
- Patent Title: Method for manufacturing aluminum circuit board
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Application No.: US16488776Application Date: 2018-02-22
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Publication No.: US11570901B2Publication Date: 2023-01-31
- Inventor: Seiji Kuroda , Hiroshi Araki , Akira Hasegawa , Makoto Watanabe , Atsushi Sakai , Yoshitaka Taniguchi , Suzuya Yamada
- Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE , DENKA COMPANY LIMITED
- Applicant Address: JP Tsukuba; JP Tokyo
- Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE,DENKA COMPANY LIMITED
- Current Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE,DENKA COMPANY LIMITED
- Current Assignee Address: JP Tsukuba; JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2017-033784 20170224
- International Application: PCT/JP2018/006488 WO 20180222
- International Announcement: WO2018/155564 WO 20180830
- Main IPC: H05K3/14
- IPC: H05K3/14 ; C22C21/06 ; H05K1/03

Abstract:
A method for manufacturing an aluminum circuit board including a step of spraying a heated metal powder containing aluminum particles and/or aluminum alloy particles to a ceramic base material, and of forming a metal layer on a surface of the ceramic base material. A temperature of at least a part of the metal powder is higher than or equal to a softening temperature of the metal powder and lower than or equal to a melting point of the metal powder at a time point of reaching the surface of the ceramic base material. A velocity of at least a part of the metal powder is greater than or equal to 450 m/s and less than or equal to 1000 m/s at the time point of reaching the surface of the ceramic base material.
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