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Process for preparing antibacterial stainless steel using ion-implantation method

A technology of antibacterial stainless steel and ion implantation equipment, which is applied in the direction of ion implantation plating, metal material coating process, coating, etc., can solve the problems of low yield rate, high rolling process requirements, high labor intensity, etc., and achieve production Simple process, avoid high copper content, good antibacterial effect

Inactive Publication Date: 2005-01-19
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

[0007] The first three technologies all add antibacterial metal ions Cu or Ag to the stainless steel as a whole through steelmaking, continuous casting and rolling processes. Due to the severe oxidation of Cu added in the smelting process, the yield is low, and at the same time, Cu is added to the stainless steel matrix as a whole. or Ag greatly increases the cost of steel
In addition, the hot brittleness of Cu will cause cracking in the rolling process, which requires high rolling process.
The latter technology is the process of surface copper infiltration to prepare antibacterial stainless steel, but when dealing with large pieces, the preparation, mixing and subsequent heat treatment of the infiltration agent make the labor intensity too high

Method used

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  • Process for preparing antibacterial stainless steel using ion-implantation method

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Embodiment approach ( 1

[0013] Embodiment (1) Preparation of martensitic antibacterial stainless steel by ion implantation

[0014] 1. The specific process steps for preparing martensitic Cu-containing antibacterial stainless steel by ion implantation are as follows:

[0015] (1) The matrix material is martensitic stainless steel, and its weight percentage composition is as follows: C: 0.08-0.45, Cr: 12-14, Si: ≤0.60, Mn: ≤0.80, Cu: ≤0.10, and the rest is Fe;

[0016] (2) Perform Cu ion implantation on the stainless steel base material on the ion implanter, and the pressure of the vacuum chamber is 1.33×10 -4 Pa is about, the Cu ion implantation energy is 60-80keV, and the Cu ion implantation dose is 1.0×10 17 cm -2 , the ion beam current density is 35μA / cm 2 , the injection time is 30-60 minutes;

[0017] (3) Antibacterial treatment (vacuum aging treatment), the treatment temperature is 450-900° C., and the time is 1-10 hours.

[0018] 2. The specific process steps for preparing martensitic Ag-...

Embodiment approach

[0021] (3) Antibacterial treatment (vacuum aging treatment), the treatment temperature is 450-900° C., and the time is 1-10 hours. Embodiment (2) Preparation of Austenitic Antibacterial Stainless Steel by Ion Implantation

[0022] 1. The specific process steps for preparing austenitic Cu-containing antibacterial stainless steel by ion implantation are as follows:

[0023] (1) The base material is austenitic stainless steel, and its weight percentage composition is as follows: C: 0.01~0.15, Cr: 16~20, Ni: 8~10, Si: ≤1.00, Mn: ≤2.00, Cu: ≤0.10, The rest is Fe;

[0024] (2) Perform Cu ion implantation on the stainless steel base material on the ion implanter, and the pressure of the vacuum chamber is 1.33×10 -4 Pa is about, Cu ion implantation energy is 100~120keV, Cu ion implantation dose is 2.0×10 17 cm -2 , the ion beam current density is 50μA / cm 2 , the injection time is 30-60 minutes;

[0025] (3) Antibacterial treatment (vacuum aging treatment), the treatment temperat...

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Abstract

The invention relates to a process for preparing cresol which comprises, feeding the stainless steel base material to be treated into ion implantation equipment for antibiotic ion implantation, then performing antibiotic treatment. The antibiotic ions are Cu or Au ions.

Description

1. Technical field [0001] The invention relates to a method for preparing antibacterial stainless steel, in particular to a method for preparing stainless steel with good antibacterial performance on the surface by ion implantation. 2. Technical Background [0002] Stainless steel is widely used in many fields, such as sanitary ware, kitchen utensils and tableware used in daily life, which not only require its brightness and beauty, but also require antibacterial and sterilizing properties, so stainless steel with antibacterial properties has emerged as the times require. In recent years, a variety of antibacterial stainless steels with good antibacterial effects have been developed. For example, Japanese researchers have obtained a whole series of antibacterial stainless steels based on stainless steel, including NSS-AM series of antibacterial stainless steels with Cu added, R304, R430AB, R430LN- AB plus silver antibacterial stainless steel, SUS340LX ferritic system and SUS...

Claims

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Application Information

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IPC IPC(8): C23C14/16C23C14/48
Inventor 倪红卫许伯藩但智钢熊娟
Owner WUHAN UNIV OF SCI & TECH
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