Surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments

An antibacterial stainless steel and passivation treatment technology, applied in the direction of metal material coating process, can solve the problems of hindering copper diffusion, declining antibacterial performance, affecting performance, etc., to achieve long-term antibacterial function, improve corrosion resistance, and improve extensive effect used

An antibacterial stainless steel and passivation treatment technology, applied in the direction of metal material coating process, can solve the problems of hindering copper diffusion, declining antibacterial performance, affecting performance, etc., to achieve long-term antibacterial function, improve corrosion resistance, and improve extensive effect used

CN106637175BActive Publication Date: 2019-02-22深圳中科麦滕医疗器械有限公司
5 Cites 0 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments
  • Surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This specific embodiment adopts the following technical scheme: the surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments is: put the antibacterial stainless steel surgical instruments into the passivation solution, the passivation treatment temperature is set to 85 ℃, passivation The passivation time is 0.2h, and then washed with water, that is, the whole passivation process is over.

[0019] The proportioning ratio of the passivation solution is calculated by weight percentage: anhydrous copper sulfate: 1.5 × 10 -3 g / L; nitric acid: 25g / L; deionized water: supplementary amount g / L.

Embodiment 2

[0021] This specific embodiment adopts the following technical scheme: the surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments is: put the antibacterial stainless steel surgical instruments into the passivation solution, the passivation treatment temperature is set to 90 ℃, passivation The passivation time is 0.3h, and then washed with water, that is, the whole passivation process is over.

[0022] The proportioning ratio of the passivation solution is calculated as: anhydrous copper sulfate: 2.0×10 -3 g / L; nitric acid: 30g / L; deionized water: supplementary amount g / L.

Embodiment 3

[0024] This specific embodiment adopts the following technical scheme: the surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments is: put the antibacterial stainless steel surgical instruments into the passivation solution, the passivation treatment temperature is set to 95 ° C, passivation The passivation time is 0.5h, and then washed with water, that is, the whole passivation process is over.

[0025] The proportioning ratio of the passivation solution is calculated as: anhydrous copper sulfate: 2.5 × 10 -3 g / L; nitric acid: 35g / L; deionized water: supplementary amount g / L.

[0026] The passivation film component formed by the passivation treatment method of the present invention contains oxides of Cu and Cr, wherein the existence of the oxides of Cr can ensure effective corrosion resistance, when the material after passivation treatment is in contact with the solution medium, Copper-rich oxides can partially dissolve and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a surface passivation treatment method of martensite antibacterial stainless steel for a surgical operating instrument. The passivation treatment method comprises the steps that the antibacterial stainless steel surgical operation instrument is placed in a passivation solution, the passivation treatment temperature is set to be 85-95 DEG C, the passivation time is 0.2-0.5 h, then the instrument is washed with water, and the whole passivation process is finished. The passivation solution used in the surface passivation treatment method of the antibacterial stainless steel is formed by mixing raw materials including anhydrous cupric sulfate and a nitric acid aqueous solution. The passivation solution is prepared from, by weight, 1.5*10<-3>-2.5*10<-3> g / L of the anhydrous cupric sulfate, 25-35 g / L of nitric acid and the balance deionized water. By the adoption of the passivation treatment method, the effect that the antibacterial stainless steel surgical operation instrument has great corrosion resistance and antibacterial performance at the same time can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of antibacterial stainless steel materials, and in particular relates to a surface passivation treatment method of martensitic antibacterial stainless steel for surgical instruments. Background technique [0002] Stainless steel for surgical instruments is mostly martensitic stainless steel, such as 2Cr13, 3Cr13 and PH17-4. Martensitic antibacterial stainless steel is a new type of biofunctional integrated new material based on the existing ordinary stainless steel with an appropriate amount of copper added, and its basic physical and chemical properties are equivalent to ordinary stainless steel. One of the outstanding advantages of martensitic stainless steel is that it has good strength and can be used to process surgical instruments that require good hardness and wear resistance for cutting and shearing. However, because its use and disinfection environment generally contain certain...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
22 Feb 2019
Publication
CN106637175B
IPC
C23C22/50
CPC
C23C22/50
Inventors
杨春光; 程德林