Antibacterial stainless steel for handrails or handles

Abstract

The invention discloses antibacterial stainless steel for handrails or handles, and belongs to the technical field of stainless steel materials. The stainless steel comprises the following chemical components of, by weight, less than or equal to 0.08% of C, less than or equal to 0.50% of Si, less than or equal to 1.00% of Mn, less than or equal to 0.05% of P, less than or equal to 0.05% of S, 8.0-12.0% of Ni, 18.0-20.0% of Cr, 3.0-5.0% of Cu, 0.50-1.50% of Ga and the balance Fe. The antibacterial stainless steel is subjected to solid solution heat treatment, and then based on the supersaturation and solid solution of the Ga and the Cu in a matrix, the Ga and the Cu exist in two forms, namely a solid solution state and a gallium-rich phase separated state. The use environment of the handrails or the handles is generally the air environment, and when the handrails or the handles are in contact with sweat, gallium ions can be effectively dissolved out due to the existence of the gallium-rich phase, so that the effects that reproduction and propagation of pathogenic bacteria among human hands are obviously inhibited, and the probability of occurrence of group-occurring bacterial infection events is reduced are achieved. According to the antibacterial stainless steel, the propagation risk of the pathogenic bacteria among the human hands is reduced, and the antibacterial stainless steel can be widely applied to the stair handrails, railings, the door handles and the like for living decoration.

Description

technical field [0001] The invention relates to the field of stainless steel materials, and in particular provides an antibacterial stainless steel for handrails or handles. Background technique [0002] Copper-containing antibacterial stainless steel is to precipitate a certain volume fraction of copper-rich precipitates during high-temperature aging. When this copper-rich phase comes into contact with bacteria, it can release a small amount of copper ions, destroy the cell walls of bacteria, and cause bacteria to die. Based on the broad-spectrum antibacterial properties of copper itself, copper-containing antibacterial stainless steel should be suitable for various practical environments. However, the killing of bacterial flora is directly related to the dissolution rate and concentration of copper ions. Generally speaking, the greater the amount of copper added in steel, the more copper-rich precipitates, the greater the dissolution rate and concentration of copper ions....

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an antibacterial stainless steel for handrails or handles, which solves the problem of relatively low antibacterial efficiency of existing materials in the use environment of electrical equipment

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