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Solid electrolyte for hydrogen determination probe in aluminum and aluminum alloy melts and preparation method

A technology of aluminum alloy melt and solid electrolyte, which is applied in the direction of material analysis, instrument, and material analysis by electromagnetic means, can solve the problems of field application limitation, insufficient electrical conductivity, low chemical stability, etc., and achieves reduction of sintering energy. high thermal shock resistance, good chemical stability

Active Publication Date: 2019-12-27
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual use, due to CaZr 0.9 In 0.1 o 3-a Solid electrolyte material, low stability, resulting in reduced sensitivity, increased error, and limited field application
And for BaCeO 3 based solid electrolyte material, the conductivity is not high enough, and the chemical stability is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts, the general formula of the electrolyte is BaCe 1-x-y- z In x sn y Y z o 3-a , where x=0.05, y=0.05, z=0.1.

[0023] A method for preparing a solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts, comprising the following steps:

[0024] (1) Weigh the pre-dehydrated and dried In according to the molar ratio in the general formula 2 o 3 and SnO 2 The powder is mixed evenly, then heated to 600°C at a heating rate of 10°C / min for sintering for 3 hours, and crushed to obtain a pre-powder; the particle size of the pre-powder particles is less than 50 microns;

[0025] (2) Weigh the pre-dehydrated and dried BaCO according to the molar ratio in the general formula 3 , CeO 2 and Y 2 o 3 , added to the pre-powder and mixed evenly to obtain a mixed powder with a particle size of 10 microns; then heated to 1500°C at a heating rate of 8°C / min for s...

Embodiment 2

[0027] Solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts, the general formula of the electrolyte is BaCe 1-x-y- z In x sn y Y z o 3-a , where x=0.25, y=0.25, z=0.25.

[0028] A method for preparing a solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts, comprising the following steps:

[0029] (1) Weigh the pre-dehydrated and dried In according to the molar ratio in the general formula 2 o 3 and SnO 2 The powder is uniformly mixed by mechanical mixing, then heated to 1000°C at a heating rate of 3°C / min for sintering for 5 hours, and pulverized to obtain a pre-powder; the particle size of the pre-powder particle is less than 50 microns;

[0030] (2) Weigh the pre-dehydrated and dried BaCO according to the molar ratio in the general formula 3 , CeO 2 and Y 2 o 3 , added to the pre-powder and mixed mechanically to obtain a mixed powder. The particle size of the mixed powder is 25 microns; then ...

Embodiment 3

[0032] Solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts, the general formula of the electrolyte is BaCe 1-x-y- z In x sn y Y z o 3-a , where x=0.01, y=0.1, z=0.1.

[0033] The solid electrolyte used for hydrogen determination probes in aluminum and aluminum alloy melts includes the following steps:

[0034] (1) Weigh the pre-dehydrated and dried In according to the molar ratio in the general formula 2 o 3 and SnO 2 The powder is uniformly mixed by mechanical mixing, then heated to 700°C at a heating rate of 9°C / min for sintering for 4.5 hours, and crushed to obtain a pre-powder; the particle size of the pre-powder particle is less than 50 microns;

[0035](2) Weigh the pre-dehydrated and dried BaCO according to the molar ratio in the general formula 3 , CeO 2 and Y 2 o 3 , added to the pre-powder and mixed mechanically to obtain a mixed powder with a particle size of 22 microns; then heated to 1450°C at a heating rate of 6°C / ...

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Abstract

The invention discloses a solid electrolyte for a hydrogen probe in aluminum and aluminum alloy melt. The general formula of the electrolyte is BaCe(1-x-y-z)InxSnyYzO(3-a), wherein x is larger than or equal to 0.01 and is smaller than or equal to 0.25, y is larger than 0 and is smaller than or equal to 0.25 and z is larger than 0 and is smaller than or equal to 0.25. The invention further discloses a preparation method of the solid electrolyte. The solid electrolyte for the hydrogen probe in the aluminum and aluminum alloy melt has high electric conductivity and good chemical stability. A solid electrolyte tube prepared from the solid electrolyte has outstanding mechanical property. The proton conductivity is improved after indium is added to the solid electrolyte; the stability and the thermal shock resistance of a solid electrolyte material are improved after Y2O3 is added, accordingly, the sensitivity of the electrolyte is improved, errors are reduced, and the application range is expanded. The preparation method has the advantages that steps are simple, the method is easy to operate and implement, reaction conditions are easy to control, sintering energy consumption is reduced, and the stable performance of the solid electrolyte is guaranteed.

Description

technical field [0001] The invention relates to a solid electrolyte for hydrogen determination probes in aluminum and aluminum alloy melts and a preparation method thereof, specifically belonging to the technical field of electrolytes for hydrogen determination probes. Background technique [0002] Aluminum and aluminum alloy castings are prone to defects such as pores and inclusions, which greatly reduce their internal quality. The liquid quality of aluminum and its alloys directly affects the quality of castings. The scrap rate due to excessive hydrogen content accounts for about half of all aluminum casting scrap. When aluminum and its alloys are solidified, many defects such as mechanical properties and internal quality are greatly reduced due to hydrogen content. Hydrogen in aluminum not only causes macroscopic defects, but also affects the structure of the structure. For strength, fatigue, toughness, corrosion resistance, anodic oxidation, etc. A series of performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/403C04B35/50C04B35/622
CPCC04B35/50C04B35/622C04B2235/3215C04B2235/3225C04B2235/3229C04B2235/3286C04B2235/3293C04B2235/5436
Inventor 康雪侯剑峰王常珍
Owner NORTHEASTERN UNIV LIAONING
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