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An antibacterial stainless steel for electrical equipment

A technology of antibacterial stainless steel and electrical equipment, applied in the field of stainless steel materials, can solve the problems of low antibacterial efficiency, achieve the effects of improving antibacterial efficiency, increasing sterilization rate, strong antibacterial performance and timeliness

Active Publication Date: 2020-02-11
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an antibacterial stainless steel for electrical equipment to solve the problem of relatively low antibacterial efficiency of existing materials in the use environment of electrical equipment

Method used

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  • An antibacterial stainless steel for electrical equipment
  • An antibacterial stainless steel for electrical equipment
  • An antibacterial stainless steel for electrical equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The heat treatment process of the antibacterial stainless steel of embodiment 1 is:

[0030] Insulate at 1055°C for 1 hour, and cool to room temperature with water to make Ga in the steel supersaturated; then hold at 590°C for 5 hours to precipitate Ga-rich and Cu-rich phases in the steel, and cool to room temperature with water.

[0031] According to the above-mentioned antibacterial detection method, the antibacterial performance of the mixed bacteria was detected, and the antibacterial rate result was 94.4%.

Embodiment 2

[0033] In the present embodiment, the heat treatment process of antibacterial stainless steel is:

[0034] Insulate at 1060°C for 2 hours, and cool to room temperature with water to make Ga in the steel supersaturated; then hold at 620°C for 6 hours to precipitate Ga-rich and Cu-rich phases in the steel, and cool to room temperature in water. According to the above-mentioned antibacterial detection method, the antibacterial performance of the mixed bacteria was detected, and the antibacterial rate result was 95.0%.

Embodiment 3

[0036] In the present embodiment, the heat treatment process of antibacterial stainless steel is:

[0037] Insulate at 1060°C for 3 hours, and cool to room temperature with water to make Ga in the steel supersaturated; then hold at 700°C for 4 hours to precipitate a sufficient volume fraction of Ga-rich and Cu-rich phases in the steel, and cool to room temperature in air. According to the above-mentioned antibacterial detection method, the antibacterial performance of the mixed bacteria was detected, and the antibacterial rate was 95.7%.

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Abstract

The invention discloses antibacterial stainless steel for electrical devices and belongs to the technical field of stainless steel materials. The stainless steel comprises the following chemical components of, by weight, 0.08% or the less of C, 0. 50% or the less of Si, 1.00% or the less of Mn, 0.05% or the less of P, 0.05% or the less of S, 8.0-12.0% of Ni, 18.0-20.0% of Cr, 2.0-5.0% of Cu, 0.5-1.5% of Mo, 0.05-0.80% of Ga and the balance Fe. After the stainless steel is subjected to special heat treatment, composite antibacterial phases (the copper-rich phase and the gallium-rich phase) canbe precipitated from a stainless steel matrix in a dispersion mode, the environment of the stainless steel for the electrical devices is commonly moist, thus gallium ions can be effectively dissolvedout through the gallium-rich phase, and the gallium ions and copper ions can obviously restrain breeding of common bacteria, in particular to mould on the surface of the stainless steel for linings ofthe electrical devices. According to the antibacterial stainless steel, the problem that as for existing electrical devices with stainless steel linings, a stainless steel container is used, and consequently bacterial infection is caused is solved, and the antibacterial stainless steel can be widely applied to various stainless steel electrical devices such as a washer roller, a refrigerator lining, a water heater, a water purifier and a humidifier.

Description

technical field [0001] The invention relates to the field of stainless steel materials, and in particular provides an antibacterial stainless steel for electrical equipment. Background technique [0002] Copper-containing antibacterial stainless steel is a kind of antibacterial material. The trace copper ions released when it contacts with the solution environment can effectively penetrate into the bacterial cell wall, causing the protein to flow out, resulting in the death of the bacteria. Based on the broad-spectrum antibacterial characteristics of copper, copper-containing antibacterial stainless steel should be able to be applied to a wide range of environments. However, in practical applications, copper-containing antibacterial stainless steel faces a wide range of use environments, and there are still some deficiencies in the inhibition of some bacteria by copper-containing stainless steel. The specific performance in the electrical equipment environment is as follows:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/60C22C38/42C22C38/44C21D1/18
CPCC21D1/18C22C38/002C22C38/02C22C38/04C22C38/42C22C38/44C22C38/60Y02P10/20
Inventor 杨春光赵金龙杨柯席通
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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