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Preparation method of carbon nanoribbon anticorrosive layer on surface of stainless steel

A carbon nanobelt and stainless steel technology, applied in coatings, fuel cell parts, metal material coating processes, etc., can solve the problems of poor corrosion resistance and short service life of stainless steel, and achieve improved corrosion resistance and improved corrosion resistance. Corrosion resistance, good bonding effect

Inactive Publication Date: 2019-04-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the problems of poor corrosion resistance of existing stainless steel materials in the acidic environment of fuel cells and short service life of stainless steel in high-temperature fuel cells, and provides a method for preparing a carbon nanobelt anti-corrosion layer on the surface of stainless steel

Method used

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  • Preparation method of carbon nanoribbon anticorrosive layer on surface of stainless steel
  • Preparation method of carbon nanoribbon anticorrosive layer on surface of stainless steel

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specific Embodiment approach 1

[0016] Specific embodiment one: the preparation method of a carbon nanobelt anti-corrosion layer on the surface of stainless steel in this embodiment is carried out according to the following steps:

[0017] 1. Put the stainless steel in the plasma-enhanced chemical vapor deposition vacuum device, evacuate to a pressure of 5Pa~10Pa, feed argon gas, adjust the gas flow rate of argon gas to 50sccm~90sccm, and adjust the plasma-enhanced chemical vapor deposition vacuum device The medium pressure is 200Pa~400Pa, and the temperature is raised to 600℃~800℃ in 10min~30min, and then the RF power is adjusted to 100W~200W. Under the condition of 200W, the stainless steel surface is etched, and the processing time is 5min~15min;

[0018] 2. After the etching is completed, turn off the radio frequency power supply, feed in argon and methane gas, adjust the flow rate of argon gas to 50 sccm to 90 sccm, adjust the flow rate of methane gas to 10 sccm to 30 sccm, and adjust the pressure in th...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 2 in that the stainless steel described in step 1 is 316L stainless steel, 304 stainless steel or 321 stainless steel. Others are the same as in the second embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the thickness of the stainless steel described in step 1 is 0.2 mm to 0.5 mm. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of an anticorrosive layer on the surface of stainless steel, in particular to a preparation method of a carbon nanoribbon anticorrosive layer on the surface of the stainless steel. The preparation method aims to solve the problems of poor corrosion resistance of existing stainless steel materials in the acidic environment of fuel cells and short service life of the stainless steel in high-temperature fuel cells. The preparation method comprises the steps that 1, the stainless steel is placed in a vacuum device of plasma enhanced chemical vapor deposition, vacuumizing is carried out, argon gas is injected, and the surface of the stainless steel is etched under certain pressure, temperature and radio frequency power conditions; 2, after etching,a radio frequency power supply is turned off, argon gas and methane gas are injected, and deposition is carried out under certain pressure, temperature and radio frequency power conditions; and 3, after deposition, the radio frequency power supply and a heating power supply are turned off, the methane gas and the argon gas stop being injected, vacuum cooling is carried out to be in a room temperature, and then the preparation method of the carbon nanoribbon anticorrosive layer on the surface of the stainless steel is completed. The preparation method is used for preparing the carbon nanoribbonanticorrosive layer on the surface of the stainless steel.

Description

technical field [0001] The invention relates to a preparation method of an anticorrosion layer on the surface of stainless steel. Background technique [0002] With the development of social industrialization, problems such as energy crisis and environmental pollution are particularly prominent. Hydrogen energy is recognized by scientists as the most effective and clean energy because of its high combustion value, abundant resources, and low impact on the environment. As one of the representatives of hydrogen energy application, fuel cell technology can directly convert the chemical energy generated by the reaction of hydrogen and oxygen into electrical energy through an electrochemical reaction device, and its energy conversion rate can reach more than 80%. At the same time, it has a short refueling time. , zero emissions and other advantages. The bipolar plate is one of the most important components of the fuel cell. Its main function is to separate O 2 and H 2 , so th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/02C23C16/26C23C16/513H01M8/021H01M8/0213H01M8/0228
CPCC23C16/0245C23C16/26C23C16/513H01M8/021H01M8/0213H01M8/0228Y02E60/50
Inventor 郑晓航鲜怡蔡逸飞杨雅倩蔡伟
Owner HARBIN INST OF TECH
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