Nano precipitated phase austenite antimicrobial stainless steel

Abstract

The invention discloses a nanometer precipitated phase austenite antibiotic stainless steel. Granular nanometer scale precipitated phases Epsilon-Cu are dispersed and distributed evenly in a prepared stainless steel matrix, to cause the stainless steel to have bacteria resistant performance. The weight percentage (percent) of the chemical compositions of the stainless steel is as follows: C is 0.10 to 0.06 percent, Ni is 8.00 to 10.00 percent, Cr is 17.00 to 20.00 percent, Cu is 1.50 to 3.50 percent, RE is 0.04 to 0.10 percent, Mg is 0.05 to 0.15 percent, Ti is 0.03 to 0.10 percent, Si is lower than or equal to 1.00 percent, Mn is lower than or equal to 2.00 percent, P is lower than or equal to 0.03 percent, S is lower than or equal to 0.03 percent, and the residual is Fe. The components of the invention are simple, alloying elements are few, and bacterium such as coliform bacteria, salmonella typhiurium, staphyloccocus aureus rosenbach and white candidiasis contacted with the stainless steel can be effectively killed. The bacteria resistant performance is durative, the bacteria resistant range is wide, and the invention can be widely applied to the fields of food processing, kitchen dining, daily electrical appliance, medical appliance, and equipment, etc.

Description

technical field [0001] The invention belongs to the intersection field of material processing engineering and medical microbiology, and relates to a nano-precipitated phase austenitic antibacterial stainless steel, which can endow ordinary austenitic stainless steel with excellent antibacterial performance by adding some specific chemical components and antibacterial heat treatment into the stainless steel , can be widely used in food processing, kitchen catering, household appliances, medical equipment and other fields that require long-lasting antibacterial properties. Background technique [0002] Microorganisms are closely related to human beings. Most microorganisms are beneficial to the human body, but very few pathogenic microorganisms such as bacteria and viruses are harmful to the human body. According to the 1996 statistics of the American "WHO" magazine, the death caused by bacterial infection in the world in 1995 was 17 million, accounting for about 1 / 3 of the de...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned defect that antibacterial stainless steel corrosion resistance declines, and provide a kind of nano-precipitated phase austenitic antibacterial stainless steel, in this stainless steel matrix, evenly dispersed with nano-scale precipitated phase ε-Cu, has good mechanical property and Anti-corrosion performance and long-lasting antibacterial performance

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