A kind of preparation method of stainless steel surface silanization treatment film

Abstract

The invention belongs to the technical field of material surface treatment, and discloses a preparation method of a stainless steel surface silanization treatment membrane. A amorphous silicon treatment membrane is formed on a stainless steel surface through chemical vapor deposition by adopting a mixed gas formed by silanization treatment agent silicon tetrahydride and doping agent phosphorus hydride, and the mixed gas contains 95%-99% by volume of silicon tetrahydride and 0.1%-0.5% by volume of phosphorus hydride. Compared with the prior art, the preparation method disclosed by the invention has the advantages that the stainless steel surface has good corrosion-resisting property after being subjected to silanization treatment and a gas sample which contains an acidic substance is not obviously changed in concentration in the process of being stored and transported in a stainless steel tank, thereby meeting the requirements for collection and analysis of the gas sample in an atmospheric environment.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a method for preparing a silanization treatment film on the surface of stainless steel. Background technique [0002] With the accelerated development of the industrialization process and the continuous strengthening of people's awareness of environmental protection, the pollution of harmful substances in the atmosphere to the environment has attracted more and more attention. Many harmful substances have pungent smells, even foul smells, which stimulate the sense of smell. Organs, causing people's unhappiness and damaging the living environment. Medical research has shown that harmful odors in the environment, especially stench, can affect human respiration, digestion, cardiovascular, endocrine and nervous systems. High concentrations of stench can also cause pulmonary edema or even suffocation to death. Long-term repeated stimulation by foul-smelling substan...

AI Technical Summary

Problems solved by technology

However, for gas samples containing acidic and corrosive substances, the acidic substances will react with the surface of the stainless steel tank wall during the storage of the sample, resulting in changes in the concentration of harmful substances in the gas sample. The surface of the stainless steel tank still needs further passivation treatment to improve corrosion resistance performance

Treating the surface of stainless steel by silanization method to improve the anti-corrosion performance of stainless steel surface has attracted people's attention, such as Chinese patents CN103087569 and CN103059625 respectively reported a silanization protective treatment agent and preparation method for the surface of anti-corrosion stainless steel plate, but by Corrosion resistance of stainless steel after silanization treatment needs to be improved