Nano precipitated phase martensite antimicrobial stainless steel

Abstract

The invention discloses a nanometer precipitated phase martensitic antibiotic stainless steel. Granular nanometer scale precipitated phases Epsilon-Cu are dispersed and distributed evenly in a stainless steel matrix, to cause the stainless steel to have bacteria resistant performance. The weight percentage of the chemical compositions of the stainless steel is as follows: C is 0.10 to 0.40 percent, Cr is 12.00 to14.00 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 0.60 percent, Mn is lower than or equal to 0.60 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 good and durative, 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 martensitic antibacterial stainless steel. By adding some specific chemical components and antibacterial heat treatment to the stainless steel, it can endow ordinary martensitic stainless steel with excellent antibacterial performance and can be widely used. It is used in food processing, kitchen and catering, household appliances, medical equipment and its equipment and other fields that require long-lasting antibacterial properties. Background technique [0002] Environmental protection is an inevitable need for sustainable social development, and health is an eternal theme of concern to human society. According to the "WHO" report, 52 million people died in the world in 1995, of which 17 million were caused by bacterial infection, accounting for about 1 / 3. These infectious diseases include cholera, pneumonia, dysentery, tube...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcoming of the decline in the corrosion resistance of the above-mentioned antibacterial stainless steel, the object of the present invention is to provide a nano-precipitated phase martensitic antibacterial stainless steel, in which the nano-scale precipitated phase ε-Cu is uniformly dispersed in the stainless steel matrix, and has good mechanical properties. Performance and anti-corrosion performance and long-lasting antibacterial performance

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