Method for preparing antibacterial and wear-resistant stainless steel permeation layer

Abstract

The invention provides a method for preparing an antibacterial and wear-resistant stainless steel permeation layer, belongs to the technical field of stainless steel surface protective coatings, and provides a method for diffusion coating of a uniformly distributed antibacterial and wear-resistant stainless steel permeation layer on a stainless steel matrix workpiece. The reaction process is controllable. The technical scheme comprises the following steps of: 1, putting the stainless steel matrix workpiece into a double-layer metallic glow ion cementation furnace, taking a pure titanium plate as a sputtering target, argon as working gas, and nitrogen or mixed gas of nitrogen and methane as reaction gas for diffusion coating; and 2, putting the stainless steel matrix workpiece subjected to diffusion coating into a vacuumized muffle furnace, introducing oxygen to react with the permeation layer of the stainless steel matrix workpiece, controlling the heating temperature range to be between 400 and 600 DEG C, keeping the temperature for 1.5 to 2 hours, and cooling to room temperature. The method is applied to the technical field of stainless steel surface diffusion coating.

Description

technical field [0001] The invention provides a method for preparing an antibacterial and wear-resistant stainless steel permeable coating, which belongs to the technical field of stainless steel surface protective coatings. Background technique [0002] Antibacterial stainless steel is divided into two types according to the antibacterial production method: coating type and self-antibacterial type. The former can transform the existing stainless steel products, that is, to coat the stainless steel with bactericidal metal materials or other inorganic materials with bactericidal effects, but the disadvantage is that it is easy to wear, aging, peeling off, and changes with temperature difference and external environment. The stainless steel loses its antibacterial properties; the latter is to add some antibacterial metal elements (usually silver, copper, etc.) The addition of low melting point silver and copper alloying elements can easily lead to the deterioration of the ove...

AI Technical Summary

Problems solved by technology

The former can transform the existing stainless steel products, that is, to coat the stainless steel with bactericidal metal materials or other inorganic materials with bactericidal effects, but the disadvantage is that it is easy to wear, aging, peeling off, and changes with temperature difference and external environment. The stainless steel loses its antibacterial properties; the latter is to add some antibacterial metal elements (usually silver, copper, etc.) The addition of low melting point silver and copper alloy elements can easily lead to the deterioration of the overall mechanical properties of stainless steel

[0003] At present, the use of double-layer glow ion infiltration metallization technology has been used to infiltrate nitrogen-doped TiO on the surface of metal substrates. 2 The film method, such as the Chinese patent CN200810055484.4, but this technology first generates a Ti film in a double-layer glow ion metallization furnace, and then reacts with nitrogen and oxygen in the air by heating to generate nitrogen-doped TiO 2 film, the disadvantage of this approach is that the resulting nitrogen-doped TiO 2 The distribution on the metal substrate is uneven, and the reaction process of nitrogen and oxygen with the titanium film is uncontrollable, and unqualified nitrogen-doped TiO is prone to occur. 2 Membrane stainless steel workpiece