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A method for preparing oxide thin film thermocouples by screen printing process

A technology of oxide film and screen printing, which is applied in the direction of using electric devices, thermometers using directly heat-sensitive electric/magnetic elements, and using electromagnetic means to achieve compact structure, improved high-temperature service performance, and increased roughness. Effect

Inactive Publication Date: 2017-10-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention aims at the defects of the existing material system and higher application requirements, and provides a method for preparing an oxide thin-film thermocouple by using a screen printing process, which is suitable for thick-film thermocouples of high-temperature ceramic substrates and their production method

Method used

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  • A method for preparing oxide thin film thermocouples by screen printing process
  • A method for preparing oxide thin film thermocouples by screen printing process
  • A method for preparing oxide thin film thermocouples by screen printing process

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Experimental program
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Effect test

Embodiment 1

[0035] The selected ITO oxide thermal electrode component is indium tin oxide material with a tin content of 10%, and the indium oxide thermal electrode component is a single oxide with a purity of 99%. Thick-film thermal electrodes are deposited on it, and the ceramic paste used for screen printing is composed of ITO powder and indium oxide powder respectively. The particle size of the powder is 100nm, and the terpineol solution is used as the organic solvent, and the ceramic powder and terpineol are evenly mixed according to the mass ratio of 1:1, and ethyl cellulose with 10% of the mass of the ceramic powder is added, and Mix with vigorous stirring as a ceramic paste for screen printing. In order to obtain good patterning, a U-shaped structure mask with a thermode length of 12 cm and a width of 4 mm was selected for screen printing preparation of a thick-film thermode, and the screen used was 200 mesh. First print the ITO thick film on the substrate, and then print the ind...

Embodiment 2

[0037] The selected ITO oxide thermal electrode component is indium tin oxide material with a tin content of 5%, and the indium oxide thermal electrode component is a single oxide with a purity of 99%. Thick-film thermal electrodes are deposited on it, and the ceramic paste used for screen printing is composed of ITO powder and indium oxide powder respectively. The particle size of the powder is 200nm, and the terpineol solution is used as the organic solvent. The ceramic powder and terpineol are uniformly mixed according to the mass ratio of 2:3, and ethyl cellulose with a mass of 9% of the ceramic powder is added, and Mix with vigorous stirring as a ceramic paste for screen printing. As a ceramic paste for screen printing. In order to obtain good patterning, a U-shaped structure mask with a thermode length of 25 cm and a width of 5 mm was selected for screen printing preparation of thick film thermodes. First print In on the substrate 2 o 3 Thick film, and then print the...

Embodiment 3

[0039] The selected ITO oxide thermal electrode component is an indium tin oxide material with a tin content of 10%. The indium oxide thermal electrode component is a single oxide with a purity of 99%. Thick-film thermal electrodes are deposited on it, and the ceramic paste used for screen printing is composed of ITO powder and indium oxide powder respectively. The particle size of the powder is 200nm, and the terpineol solution is used as the organic solvent. The ceramic powder and terpineol are uniformly mixed according to the mass ratio of 3:2, and ethyl cellulose with 11% of the mass of the ceramic powder is added, and Mix with vigorous stirring as a ceramic paste for screen printing. As a ceramic paste for screen printing. In order to obtain good patterning, a U-shaped structure mask with a thermode length of 20 cm and a width of 1.0 cm was selected for screen printing preparation of thick film thermodes. First print the ITO thick film on the substrate, and then print t...

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Abstract

The invention relates to a method for preparing an oxide thin-film thermocouple by using a screen printing process. The oxide thick-film thermocouple which can be used for high-temperature temperature measurement is prepared by depositing on a high-temperature ceramic substrate by using the screen printing process. The thick-film thermocouple is directly mounted on the surface of the ceramic substrate, can be used in an oxidizing atmosphere, and can work stably for a long time at a high temperature of 1000°C-1250°C.

Description

【Technical field】 [0001] The invention relates to the field of sensor preparation technology and high-temperature temperature measurement technology, in particular to a method for preparing an oxide film type thermocouple by using a screen printing process. 【Background technique】 [0002] In aero-engine design and verification experiments, in order to verify the combustion efficiency of the engine and the design of the cooling system, it is necessary to accurately test the temperature of the engine turbine blade surface, the inner wall of the combustion chamber and other parts. Compared with traditional linear and block thermocouples, high-temperature ceramic thick-film thermocouples have the characteristics of small heat capacity, small size, and fast response, and can capture instantaneous temperature changes. At the same time, thick-film thermocouples can be directly deposited on the measured object surface, does not damage the structure of the tested part, and has little...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/02
Inventor 史鹏任巍刘艳涛田边蒋庄德
Owner XI AN JIAOTONG UNIV