公开(公告)号：US11946122B2

公开(公告)日：2024-04-02

申请号：US17263876

申请日：2020-07-23

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Dongdong Gu ,  Kaijie Lin ,  Jingfeng Quan ,  Yamei Fang ,  Qing Ge ,  Jie Zhuang ,  Yang Liu ,  Weisong Dong ,  Pengjiang Shuai

IPC: C22C38/00 ,  B22F1/05 ,  B22F1/065 ,  B22F9/04 ,  B22F10/28 ,  B22F10/322 ,  B22F10/36 ,  B22F10/366 ,  B23K26/00 ,  B23K26/342 ,  B33Y10/00 ,  B33Y70/00 ,  B23K103/04

CPC classification number: C22C38/007 ,  B22F9/04 ,  B22F10/28 ,  B22F10/36 ,  B22F10/366 ,  B23K26/0006 ,  B23K26/342 ,  B33Y70/00 ,  B22F1/05 ,  B22F1/065 ,  B22F2009/043 ,  B22F10/322 ,  B22F2301/255 ,  B22F2301/35 ,  B22F2304/10 ,  B23K2103/05 ,  B33Y10/00 ,  B22F2998/10 ,  B22F1/052 ,  B22F2009/043 ,  B22F10/28

Abstract: The present disclosure relates to a micron silver particle-reinforced 316L stainless steel matrix composite, including a 316L stainless steel matrix and silver particles uniformly distributed in the 316L stainless steel matrix. The silver particles have a weight 1% to 5% of the total weight of the composite; and the composite has a density of 7.9 g/cm3 to 8.2 g/cm3 and a relative density of more than 98%. The composite is prepared by the following method: mixing raw materials of a spherical silver powder and a spherical 316L stainless steel powder; subjecting a resulting mixture to mechanical ball milling to obtain a mixed powder; sieving the mixed powder and adding a resulting powder to a powder cylinder of an SLM forming machine; and charging an inert protective gas for printing to obtain the composite.