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Preparation of nano crystal film of rare earth doped strontium cerate

A rare earth doping, nanocrystalline technology, applied in chemical instruments and methods, crystal growth, single crystal growth, etc., can solve the problems of strict system requirements, poor film compactness, low film formation rate, etc., and achieve high purity and dense film. The effect of good performance and low reaction temperature

Inactive Publication Date: 2005-02-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the equipment of the electrophoretic deposition method is simple and the deposition layer is uniform, but during the growth of the film, gas escapes and pores are formed in the film, so the prepared film has poor density.
The production cost of air plasma spraying is very high, while the cost of vacuum plasma spraying is too high and the film formation rate is very low due to the complex equipment and vacuum system operation
Electrochemical vapor deposition can prepare thin films with good airtightness, but the system requirements are strict, the equipment is complicated, and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment one.SrCe 0.95 Yb 0.05 o 3 Nanocrystalline film preparation

[0010] Add 12ml concentrated nitric acid to 0.1970gYb 2 o 3 Inside, heat and evaporate to dryness, make a solution with 10ml deionized water, as A raw material; 4.2326g Sr(NO 3 ) 2 Make solution with 20ml of deionized water, as B raw material, 8.2508gCe(NO 3 ) 3 ·6H 2 O use 20ml of deionized water to prepare a solution as the raw material of C, then stir and mix the raw materials of A, B, and C, add ethylene glycol 4.0 times the total amount of metal ions, and make an initial solution of about 200ml. Under stirring or ultrasonic vibration, the solution was adjusted to pH=3 with nitric acid, and heated in a water bath at 80°C until the viscosity reached 100-300cP. On the aluminum oxide substrate, the film was coated with a glue machine for 10 seconds at a speed of 2000 rpm. Infrared drying or vacuum drying at 100°C for 15 minutes, coating again, and drying until the desired thickness is rea...

Embodiment 2

[0012] Embodiment two. SrCe 0.90 Y 0.10 o 3 Nanocrystalline film preparation

[0013] Add 20ml concentrated nitric acid to 0.2258gY 2 o 3 Inside, heat and evaporate to dryness, make a solution with 20ml deionized water, as A raw material; 4.2326g Sr(NO 3 ) 2 Make solution with 20ml of deionized water, as B raw material, 7.8165gCe(NO 3 ) 3 ·6H 2 O use 20ml of deionized water to prepare a solution as the raw material of C, then stir and mix the raw materials of A, B, and C, add ethylene glycol 4.0 times the total amount of metal ions, and make an initial solution of about 200ml. Under stirring or ultrasonic vibration, the solution was adjusted to pH=3 with nitric acid, and heated in a water bath at 80°C until the viscosity reached 100-300cP. On the quartz glass substrate, the film was coated with a glue machine for 10 seconds at a speed of 2000 rpm. Infrared drying or vacuum drying at 100°C for 15 minutes, coating again, and drying until the desired thickness is reache...

Embodiment 3

[0015] Embodiment three. SrCe 0.85 Yb 0.15 o 3 Nanocrystalline film preparation

[0016] Add 36ml concentrated nitric acid to 0.5911gYb 2 o 3 Inside, heat and evaporate to dryness, make a solution with 30ml deionized water, as A raw material; 4.2326g Sr(NO 3 ) 2 Make solution with 20ml of deionized water, as B raw material, 7.3823gCe(NO 3 ) 3 ·6H 2 O use 20ml of deionized water to make a solution, as the raw material of C, then stir and mix the raw materials of A, B, and C, add ethylene glycol that is 4 times the total amount of metal ions, and make an initial solution of about 200ml. Under stirring or ultrasonic vibration, the solution was adjusted to pH=3 with nitric acid, and heated in a water bath at 80°C until the viscosity reached 100-300cP. On the monocrystalline silicon substrate, the film was coated with a glue machine for 10 seconds at a speed of 2000 rpm. Infrared drying or vacuum drying at 100°C for 15 minutes, coating again, and drying until the desired ...

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PUM

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Abstract

A method for preparing rare earth doped strontium cerate nanometer crystal thin film by organic polymer presoma method is disclosed. It is prepared by: preparing initial solution with cerous nitrate, strontium nitrate or strontium acetate, rare earth oxide as raw materials, determining the proportion by prepared thin film composition, the composition of thin film is SrCe1-xRExO3, the range of x volume is 0.02-0.20, concentration of initial solution is 0.1-0.4mol / L, taking ethylene as complexant, the adding account of ethylene is 2-6 times of metal ionic total account, mixing and supersonic oscillating, heating in water bath under 50-100deg.C, adjusting PH value, the system being heated reacting to produce organic polymer, film coating with 1500-3000rpm circulating speed on required chip by glue equalizer when viscosity reaching 100-300cP, infrared drying or vacuum drying, second film coating, drying until reaching the required thickness, and producing nanometer crystal thin film under 900deg.C reacting.

Description

technical field [0001] The invention relates to a preparation method of a rare earth-doped strontium cerate nanocrystal film, which belongs to the technical field of inorganic film material manufacture. Background technique [0002] doped perovskite SrCeO 3 , BaCeO 3 , CaZrO 3 , SrZrO 3 , BaZrO 3 Such composite oxide ceramics have good proton conductivity in the medium-high temperature hydrogen and water vapor atmosphere. These proton conductors can be used as hydrogen sensors, medium and high temperature fuel cells, hydrogen pumps, electrolytic preparation, separation and purification of hydrogen, catalytic hydrogenation and dehydrogenation of organic synthesis, and solid electrolytes for various electrochemical devices. Application value and broad application prospects, especially in the application of the determination of hydrogen in the metallurgical industry, it has the advantages of quickness, simplicity, and low cost. The rare earth-doped perovskite SrCeO 3 Cer...

Claims

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Application Information

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IPC IPC(8): C23C20/08C30B29/22
Inventor 方建慧朱冬冬丁伟中施利毅沈霞
Owner SHANGHAI UNIV
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