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Method for measuring hydrogen pressure in solid steel and device

A hydrogen pressure, solid-state technology, applied in the field of solid electrolytes and chemical sensors, can solve problems such as expensive, inconvenient to use, and difficult to store

Inactive Publication Date: 2010-03-03
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

NAFION polymer film is expensive, difficult to store, easy to deform, and inconvenient to use

Method used

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  • Method for measuring hydrogen pressure in solid steel and device
  • Method for measuring hydrogen pressure in solid steel and device
  • Method for measuring hydrogen pressure in solid steel and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The device of the present invention is composed of a ceramic solid electrolyte tube 1, a corundum tube 2, an air intake tube 3, an electrode lead 4, an exhaust tube 5 and a high-resistance digital voltmeter 6, and one end of the corundum tube 2 is connected to the open end of the ceramic solid electrolyte tube 1, That is, the corundum tube 2 and the ceramic solid electrolyte tube 1 are socketed and glued together. Adhesive 7 is selected from commercially available epoxy resin adhesives. The intake pipe 3 passes through the closed end of the corundum tube 2, extends into the corundum tube 2 and is close to the inner wall of the bottom of the ceramic solid electrolyte tube 1, and there is a gap between the outer wall and end surface of the intake tube 3 and the bottom inner wall of the ceramic solid electrolyte tube 1, and the gap can Pass standard hydrogen. An exhaust pipe 5 is provided on the side wall of the corundum pipe 2 . One end of the electrode lead wire 4 exte...

Embodiment 2

[0096]The device of the present invention is composed of a ceramic solid electrolyte tube 1, a corundum tube 2, an air intake tube 3, an electrode lead 4, an exhaust tube 5 and a high-resistance digital voltmeter 6, and one end of the corundum tube 2 is connected to the open end of the ceramic solid electrolyte tube 1, That is, the corundum tube 2 and the ceramic solid electrolyte tube 1 are socketed and glued together. Adhesive 7 is selected from commercially available acrylic resin adhesive. The intake pipe 3 passes through the closed end of the corundum tube 2, extends into the corundum tube 2 and is close to the inner wall of the bottom of the ceramic solid electrolyte tube 1, and there is a gap between the outer wall and end surface of the intake tube 3 and the bottom inner wall of the ceramic solid electrolyte tube 1, and the gap can Pass standard hydrogen. An exhaust pipe 5 is provided on the side wall of the corundum pipe 2 . One end of the electrode lead wire 4 exte...

Embodiment 3

[0125] The device of the present invention is composed of a ceramic solid electrolyte tube 1, a corundum tube 2, an air intake tube 3, an electrode lead 4, an exhaust tube 5 and a high-resistance digital voltmeter 6, and one end of the corundum tube 2 is connected to the open end of the ceramic solid electrolyte tube 1, That is, the corundum tube 2 and the ceramic solid electrolyte tube 1 are socketed and glued together. Adhesive 7 is selected from commercially available instant dry adhesive (502 glue). The intake pipe 3 passes through the closed end of the corundum tube 2, extends into the corundum tube 2 and is close to the inner wall of the bottom of the ceramic solid electrolyte tube 1, and there is a gap between the outer wall and end surface of the intake tube 3 and the bottom inner wall of the ceramic solid electrolyte tube 1, and the gap can Pass standard hydrogen. An exhaust pipe 5 is provided on the side wall of the corundum pipe 2 . One end of the electrode lead w...

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Abstract

The invention relates to a method for measuring hydrogen pressure in solid steel and a device; the device is composed of a ceramic solid electrolyte pipe, an alundum tube, an air inlet pipe, an electrode lead wire, an air exhaust pipe and a high-resistance digital voltmeter; a sample to be measured is contacted with the close end of the ceramic solid electrolyte pipe, one end of the electrode leadwire is contacted with the sample to be measured, the other end thereof is stretched in the air inlet pipe and is contacted with the inner wall of the ceramic solid electrolyte pipe, the temperatureof the sample to be measured can be controlled at 0-50 DEG C or 200-800 DEG C, standard hydrogen passes through the air inlet pipe, the measuring time is controlled for 5-30 minutes, electrodynamic force value is read by the high-resistance digital voltmeter, and then the pressure of the hydrogen to be measured is calculated. The method realizes to measure hydrogen pressure in solid steel at a range of from 0 to 50 DEG C or from 200 to 800 DEG C in an on-line way, so as to find defect sites of solid steel and aluminium alloy in a real-time manner and carry out dehydrogenation in advance.

Description

technical field [0001] The invention belongs to the technical field of solid electrolytes and chemical sensors, and in particular relates to a technology for measuring hydrogen pressure in solid steel by a ceramic solid electrolyte sensing method. Background technique [0002] In 1940, Chinese scholars studied the self-fracture steel shaft of the British crashed plane, and proved for the first time that the fracture of steel was caused by hydrogen. The accidents were all due to hydrogen-induced fractures. The so-called "white spots", "hair lines", and "fish eyes" are all different reactions of the same hydrogen cracking cause under different conditions. [0003] The hydrogen in molten steel mainly comes from the hydrogen generated by the decomposition of water vapor during the smelting process. The vibration frequency of interstitial hydrogen atoms is 10 13 / S, has a large, irregular random diffusion velocity. The solubility of hydrogen in metals decreases with decreasin...

Claims

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Application Information

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IPC IPC(8): G01N27/406
Inventor 王常珍厉英
Owner NORTHEASTERN UNIV
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