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Ferrite stainless steel having excellent antibacterial characteristics

A technology of stainless steel and ferrite, applied in the field of ferritic stainless steel, can solve the problems of expensive Ag, difficult to obtain yield, lower corrosion resistance of stainless steel, etc., and achieve the effect of excellent antibacterial function

Inactive Publication Date: 2007-04-18
辽宁国瑞商贸有限公司
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Problems solved by technology

However, Ag is expensive, and its solubility in stainless steel is extremely low. It is difficult to obtain sufficient yield with conventional metallurgical technology, and the use of special smelting technology will greatly increase the cost; Cu can be realized by precipitation of supersaturated solid solution. Dispersion distribution of antibacterial phase in stainless steel, the more precipitated phase, the stronger the antibacterial performance
However, the existence of Cu precipitates on the surface will significantly reduce the corrosion resistance of stainless steel, the more precipitates, the more obvious the decline in corrosion resistance

Method used

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  • Ferrite stainless steel having excellent antibacterial characteristics
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Embodiment Construction

[0014] Sample preparation: according to the composition of the ferritic antibacterial stainless steel of the present invention, smelt with a 25kg vacuum induction furnace, then through forging, hot rolling and annealing, repeated cold rolling-annealing-pickling, and make a plate of 0.8mm, from the above A sample of 25×25 mm was cut from the plate, kept in a vacuum furnace at 920° C. for 7 minutes, and then aged at 600° C. for 6 hours. Then carry out antibacterial performance test.

[0015] Antibacterial performance test: The specific test is carried out at the Center for Disease Control and Prevention, using the antibacterial detection method of the Japan Antimicrobial Association "Japanese Industrial Standards: Antibacterial Test Methods and Antibacterial Effects of Antibacterial Processed Products" (Japanese Industrial Standard JIS Z2801-2000), using film coating method, with a concentration of 10 5 Cfu / ml of standard bacterial solution under the conditions of temperature 3...

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Abstract

A kind of ferrite stainless steel with good antisepsis is disclosed. It contains C<0.1%, Si<1%,Mn<1.0%,Cr 10-30% ,Nb 0.01-0.5%,and allowance is Fe. It is characterized in that it contains 0.0005-0.10% Ag and 0.3-2.0% Cu simultaneously. Ag exists in form of tenuous, oxide and sulfide, 30-80% of Cu exists in form of precipitated phase. Simultaneous application of two antisepsis element not only strengthens antisepsis property of single antiseptic non-corrosive steel with Cu, but also solves difficulties in cost of antiseptic non-corrosive steel with Ag. The non-corrosive steel can be applied in the fields of accommodation, medication and public health.

Description

Technical field: [0001] The invention relates to ferritic stainless steel, which is an antibacterial stainless steel containing two antibacterial elements, Ag and Cu, and has excellent long-term antibacterial function, so it can be applied to various fields that require antibacterial in daily life, such as kitchen equipment, catering utensils , medical equipment, food processing and pharmaceutical machinery, and public facilities. Background technique: [0002] With the development of society and the improvement of people's living standards, the antibacterial industry has developed rapidly. However, most of the antibacterial products on the market are antibacterial plastics, antibacterial ceramics, antibacterial fabrics, etc. made by adding antibacterial agents, and there are few metal antibacterial materials that are resistant to abrasion and high temperature. Ordinary stainless steel has been widely used in daily society because of its human safety, good strength, tempera...

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Application Information

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IPC IPC(8): C22C38/26
Inventor 吴平森
Owner 辽宁国瑞商贸有限公司
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