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Antibiotic martensitic stainless steel and use thereof in hardware industry

A martensitic stainless steel and antibacterial stainless steel technology, which is used in sanitary equipment, water supply devices, buildings, etc. for toilets. It can solve problems such as bacteria, and achieve the effect of increasing corrosion rate, improving performance and reducing passivation interval.

Inactive Publication Date: 2008-12-17
上海张小泉刀剪制造有限公司
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Problems solved by technology

[0014] In order to overcome the common problem of bacteria in the use of stainless steel metal materials currently used, the present invention applies antibacterial martensitic stainless steel to the hardware industry

Method used

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Embodiment Construction

[0017] By adding an appropriate amount of copper to martensitic stainless steel and undergoing special heat treatment (high temperature tempering is used to obtain a better structure, the material has higher strength, good toughness, corrosion resistance and better antibacterial properties. Performance), can make the ε-Cu phase dispersively precipitate in stainless steel, and dissolve copper ions in water, so it has excellent antibacterial properties. The experimental results show that the addition of copper can refine the grains of stainless steel, which has higher strength and hardness, but slightly increases the corrosion rate and reduces the passivation interval.

[0018] The antibacterial effect of antibacterial martensitic stainless steel on Staphylococcus aureus is greater than 99%, and the antibacterial effect on Escherichia coli reaches 97%.

[0019] It is possible to cooperate with steel production enterprises to produce antibacterial martensitic stainless steel mate...

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Abstract

The invention discloses a martensite stainless steel with antibacterial property and an application thereof in the industry of hardware. Through researches on the aspect of stainless steel material and how to make use of antibacterial property and how to add Cu into stainless steel material and through adding appropriate Cu into martensitic stainless steel as well as through special thermal treatment (high-temperature tempering is adopted so as to obtain relatively good organizational structure, endowing material with the properties of relatively high intensity, good toughness, corrosion resistance and antibacteria), Epsilon-Cu phase can be precipitated dispersedly from stainless steel and then coppor ion can be dissolved out in water; therefore, the obtained stainless steel has good antibacterial property. The addition of Cu can cause grain of stainless steel to be thinned, have relatively high intensity and hardness, reduce passivation range and increase corrosion rate slightly. The antibacterial effect of the martensite antibacterial stainless steel on staphylococcus aureus is more than 99 percent, and the effect on escherichia coli reaches 97 percent; therefore, the stainless steel of the invention can not only improve the performance of the stainless steel material, but also effectively inhibit the breeding of bacteria. The martensite stainless steel with antibacterial property is mainly applied to hardware products.

Description

Technical field: [0001] The invention belongs to the field of metal material research. It is mainly through the research on stainless steel metal materials, the antibacterial properties of copper and how to add copper to stainless steel metal materials. [0002] The main technical issues are: [0003] 1. Research on the structure of stainless steel metal materials; [0004] 2. Research on the antibacterial properties of copper; [0005] 3. Research on how to add copper to stainless steel metal materials; [0006] 4. Research on the element composition and structure of antibacterial martensitic stainless steel. Background technique [0007] At present, stainless steel metal materials have been widely used in hardware products, but bacteria, especially antibacterial Staphylococcus aureus and Escherichia coli, commonly exist in the stainless steel metal materials used at present. Antibacterial stainless steel usually achieves the goal through three methods: 1. Coating a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C21D1/18C22C38/20A61L2/238
Inventor 裘德鑫
Owner 上海张小泉刀剪制造有限公司
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