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Method for preparing spinel oxide protective coating of stainless steel connector of solid oxide fuel battery

A spinel oxide, solid oxide technology, applied in metal material coating process, coating, ion implantation plating and other directions, can solve the problem of poor bonding force, unable to prepare spinel oxide film, protective coating The problem of many pores in the film is to achieve the effect of good bonding force, preventing Cr volatilization and good Cr blocking performance.

Inactive Publication Date: 2016-01-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention aims to solve the problem that the protective coating film prepared by the traditional method has many pores and poor bonding force, and cannot prepare a spinel oxide film with a suitable thickness, and provides a spinel oxide film for a solid oxide fuel cell stainless steel connector. Preparation method of object protective coating

Method used

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  • Method for preparing spinel oxide protective coating of stainless steel connector of solid oxide fuel battery

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Experimental program
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specific Embodiment approach 1

[0017] Specific Embodiment 1: In this embodiment, a method for preparing a spinel oxide protective coating of a solid oxide fuel cell stainless steel connector is carried out according to the following steps:

[0018] 1. Ultrasonic cleaning: Put the ferrite-based stainless steel into acetone and ultrasonically clean it twice under the condition of ultrasonic frequency of 40kHz. The time of each ultrasonic cleaning is 8min to 15min to obtain the ferrite-based stainless steel after ultrasonic treatment;

[0019] 2. Pre-sputtering treatment: put the ultrasonically treated ferrite-based stainless steel obtained in step 1 on the sample stage in the vacuum chamber, and evacuate to a vacuum degree of 1.0×10 -4 Pa~1.0×10 -3 Pa, under the conditions of a voltage of 100V-200V and an air pressure of 10Pa, perform pre-sputter cleaning for 10min-30min to obtain ferrite-based stainless steel after pre-sputtering treatment;

[0020] 3. Alloy thin film preparation: fix the alloy target on th...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that the ferrite-based stainless steel in step 1 is SUS430 stainless steel, SUS441 stainless steel, ZMG232L stainless steel, ZMG232J3 stainless steel, ZMG232G10 stainless steel or APU22 stainless steel. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: In Step 2, pre-sputter cleaning is performed for 20 minutes under the conditions of a voltage of 100V-200V and an air pressure of 10Pa. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for preparing a spinel oxide protective coating of a stainless steel connector of a solid oxide fuel battery, and aims at solving the problems of many pores and poor adhesion of a protective coating film prepared by use of a traditional method and the failure of the traditional method in preparing a spinel oxide film with an appropriate thickness. The method comprises the following steps: 1, ultrasonic cleaning; 2, pre-sputtering treatment; 3, alloy film preparation; and 4, protective coating preparation. The film prepared by use of the method is dense and good in adhesive, and adjustable in coating thickness; besides, the film is good in high temperature oxidization resistance, low in interface resistance and good in Cr blocking property, and further capable of effectively preventing cathode poisoning. The method is used for coating the stainless steel connector of the solid oxide fuel battery with a protective layer.

Description

technical field [0001] The invention relates to a method for preparing a spinel oxide protective coating of a stainless steel connecting body of a solid oxide fuel cell. Background technique [0002] Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, SOFC) is an energy device that can directly convert chemical energy into electrical energy. As an all-solid-state high-temperature fuel cell, there is no risk of electrolyte leakage, high operating temperature, and cheap Metal oxides replace precious metals as catalytic materials. In addition, they have significant advantages such as high energy conversion efficiency, wide fuel applicability, and good environmental compatibility. They are used in distributed power stations, household cogeneration systems, and as power for ships and vehicles Power supply has broad application prospects and has become a new energy technology that countries are competing to develop. [0003] According to the working principle of hydrogen-oxygen fuel ce...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/58C23C14/08
Inventor 马欣新唐光泽甄淑颖
Owner HARBIN INST OF TECH
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