公开(公告)号：US20250043403A1

公开(公告)日：2025-02-06

申请号：US18708980

申请日：2021-11-12

Applicant: VERSITECH LIMITED

Inventor： Mingxin Huang ,  Litao Liu ,  Lit Man Poon ,  Wing Hong Chin

IPC: C22C38/52 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/20 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

Abstract: The present invention provides an antibacterial and antiviral copper-containing stainless steel, and a preparation method for and the use of a stainless-steel conforming to the composition thereof. The copper-containing stainless steel comprises a stainless steel matrix and a copper-rich phase evenly distributed in the stainless steel matrix, wherein the copper content of the copper-containing stainless steel is 6-30 wt %. The preparation method therefor comprises the manufacturing of a small stainless steel product mainly using powder metallurgy technology, and the manufacturing of a large stainless steel sheet, bar or pipe mainly using a composite process without significant thermal deformation. Compared with a traditional antibacterial stainless steel, the composition design of the present invention contains sufficient copper-rich precipitated phases, such that the antibacterial and antiviral copper-containing stainless steel of the present invention can achieve both a good killing effect on bacteria and a virus killing capacity comparable with that of pure copper, can be used for preparing the integral body or the whole of parts such as cutters, elevator buttons, railings, handrails, door handles and cups, and can effectively kill bacteria and viruses existing on the surfaces thereof.