公开(公告)号：EP3799977A1

公开(公告)日：2021-04-07

申请号：EP19200826.6

申请日：2019-10-01

Applicant: ABB Schweiz AG

Inventor： Tang, Yinglu ,  Boehm, Moritz ,  Bodry, Sam

IPC: B22F9/04 ,  H01H1/0237

Abstract: A method for manufacturing an Ag-based electrical contact material comprising the steps of:
a. synthesizing an intermetallic compound of Me x Sn y type;
b. ball milling the intermetallic compound;
c. mixing the so obtained intermetallic compound powder with silver powder;
d. packing the mixed powders into a green body;
e. forming a MeO-SnO 2 cluster structure by internally oxidizing the intermetallic compound Me x Sn y while sintering the green body.
An Ag-based electrical contact material comprising a MeO-SnO 2 cluster structure obtained with said method and an electrical contact material obtained therewith are also disclosed.