公开(公告)号：US20230005673A1

公开(公告)日：2023-01-05

申请号：US17363126

申请日：2021-06-30

申请人： Siemens Industry, Inc.

发明人： Roberto Carlos Hernandez Maya ,  Luis Miguel Franco Caballero ,  Francisco Franco Caballero

IPC分类号： H01H1/025 ,  C22C29/08 ,  C22C29/00 ,  C22C9/00

摘要： A metal contact of a residential circuit breaker with ordered ceramic microparticles is provided. The metal contact comprises an electrical contact material comprising a metal alloy and ceramic particles to form a metal matrix composite material. Both materials the metal alloy and the ceramic particles are present together as a metal compound but without forming an alloy. The metal compound is a matrix and reinforcement being the ceramic particles such that first the ceramic particles has a sintering step to get a homogeneous preform for the metal compound being porous with a controlled size obtained by pressing a particle size of about few micrometers of the ceramic particles and then a liquid metal infiltration step to provide a homogenous distribution of the metal alloy and the ceramic particles in a three-dimensional open porous arrangement and the homogenous distribution results in ordered microstructures.

公开(公告)号：US11798751B2

公开(公告)日：2023-10-24

申请号：US17363126

申请日：2021-06-30

申请人： Siemens Industry, Inc.

发明人： Roberto Carlos Hernandez Maya ,  Luis Miguel Franco Caballero ,  Francisco Franco Caballero

IPC分类号： H01H1/025 ,  C22C9/00 ,  C22C29/00 ,  C22C29/08

CPC分类号： H01H1/025 ,  C22C9/00 ,  C22C29/005 ,  C22C29/08

摘要： A metal contact of a residential circuit breaker with ordered ceramic microparticles is provided. The metal contact comprises an electrical contact material comprising a metal alloy and ceramic particles to form a metal matrix composite material. Both materials the metal alloy and the ceramic particles are present together as a metal compound but without forming an alloy. The metal compound is a matrix and reinforcement being the ceramic particles such that first the ceramic particles has a sintering step to get a homogeneous preform for the metal compound being porous with a controlled size obtained by pressing a particle size of about few micrometers of the ceramic particles and then a liquid metal infiltration step to provide a homogenous distribution of the metal alloy and the ceramic particles in a three-dimensional open porous arrangement and the homogenous distribution results in ordered microstructures.