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Preparation method of antibacterial stainless steel cutter with nano titanium nitride coating

A technology of antibacterial stainless steel and nano-titanium nitride, which is applied in the field of preparation of antibacterial stainless steel knives, can solve the problems of poor antibacterial effect and low hardness, and achieve the effects of prolonged service life, high hardness and high melting point

Active Publication Date: 2021-01-22
XI'AN POLYTECHNIC UNIVERSITY
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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 a preparation method of an antibacterial stainless steel cutter with a nano-titanium nitride coating, which solves the problem of low hardness and poor antibacterial effect of existing stainless steel cutters. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A kind of preparation method of the antibacterial stainless steel cutter with nano-titanium nitride coating of the present invention, specifically implement according to the following steps:

[0057] Step 1, using the ammonia reduction method to prepare nano-titanium nitride particles;

[0058] Specifically: put the anatase phase titanium dioxide nanoparticles with a particle size of 40nm into a vacuum tube furnace for heat treatment to obtain nano-titanium nitride particles; the particle size of the nano-titanium nitride particles is 50nm;

[0059] During heat treatment, nitrogen is used as a protective gas, the temperature is raised to 800°C at a rate of 5°C / min, and the temperature is kept for 5 hours. During the heat preservation process, ammonia gas is introduced. Nitrogen needs to be introduced as a protective gas; the pressure of the vacuum tube furnace is normal pressure.

[0060] Step 2, adding metal elements with antibacterial function to the stainless steel ...

Embodiment 2

[0077] A kind of preparation method of the antibacterial stainless steel cutter with nano-titanium nitride coating of the present invention, specifically implement according to the following steps:

[0078] Step 1, using the ammonia reduction method to prepare nano-titanium nitride particles;

[0079] Specifically: put anatase phase titanium dioxide nanoparticles with a particle size of 40nm into a vacuum tube furnace for heat treatment to obtain nano-titanium nitride particles; the particle size of nano-titanium nitride particles is 80nm;

[0080] During heat treatment, nitrogen is used as a protective gas, the temperature is raised to 800°C at a rate of 5°C / min, and the temperature is kept for 5 hours. During the heat preservation process, ammonia gas is introduced. Nitrogen needs to be introduced as a protective gas; the pressure of the vacuum tube furnace is normal pressure.

[0081] Step 2, adding metal elements with antibacterial function to the stainless steel matrix, ...

Embodiment 3

[0098] A kind of preparation method of the antibacterial stainless steel cutter with nano-titanium nitride coating of the present invention, specifically implement according to the following steps:

[0099] Step 1, using the ammonia reduction method to prepare nano-titanium nitride particles;

[0100] Specifically: put anatase phase titanium dioxide nanoparticles with a particle size of 40nm into a vacuum tube furnace for heat treatment to obtain nano-titanium nitride particles; the particle size of nano-titanium nitride particles is 100nm;

[0101] During heat treatment, nitrogen is used as a protective gas, the temperature is raised to 800°C at a rate of 5°C / min, and the temperature is kept for 5 hours. During the heat preservation process, ammonia gas is introduced. Nitrogen needs to be introduced as a protective gas; the pressure of the vacuum tube furnace is normal pressure.

[0102]Step 2, adding metal elements with antibacterial function to the stainless steel matrix, ...

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Abstract

The invention discloses a preparation method of an antibacterial stainless steel cutter with a nano titanium nitride coating. The preparation method specifically comprises the following steps: firstly, preparing nano titanium nitride particles by using an ammonia gas reduction method; then adding a metal element with an antibacterial function into a stainless steel matrix, and carrying out solution treatment to obtain an antibacterial stainless steel matrix; and finally, compounding the nano titanium nitride particles onto an antibacterial stainless steel cutter material matrix by using a coldspraying technology to obtain the antibacterial stainless steel cutter with the nano titanium nitride coating. The titanium nitride coating reinforced antibacterial stainless steel cutter material prepared by combining the titanium nitride coating and the antibacterial stainless steel has the good characteristics of high hardness, high strength, high wear resistance, bacterial resistance and no rust.

Description

technical field [0001] The invention belongs to the technical field of stainless steel cutter preparation, and in particular relates to a preparation method of an antibacterial stainless steel cutter with a nano-titanium nitride coating. Background technique [0002] Titanium nitride coating is one of the most widely used hard coatings, and it is also the earliest developed binary transition metal nitride coating. Because titanium nitride has the characteristics of high melting point, high hardness, and inactive chemical properties under high temperature conditions, titanium nitride coating can be used as a wear-resistant and hard film and widely used in various cutting tools and mechanical parts. Antibacterial stainless steel has low cost and excellent antibacterial performance and can be applied to many fields. For example, ferritic antibacterial stainless steel can be used in kitchen utensils, household appliances, etc., austenitic antibacterial stainless steel can be us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04C22C33/04C21D8/02C21D9/00C01B21/076B82Y30/00
CPCC23C24/04C22C33/04C21D8/0205C21D9/0081C01B21/076B82Y30/00C01P2004/64
Inventor 王军段春光陈召龙
Owner XI'AN POLYTECHNIC UNIVERSITY
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