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Preparation method of chemical composition standard substance of indium tin oxide material

A standard substance and chemical composition technology, applied in the field of stoichiometry, can solve the problems of no indium tin oxide, etc., and achieve the effect of strong designability, good controllability, and loose product structure

Active Publication Date: 2017-08-25
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The research purpose reported in the existing literature pays more attention to the formation of indium tin oxide materials, and there is no report on the control of the content of impurity elements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking the preparation of 100g 1# indium tin oxide chemical composition standard substance in Table 1 as an example, the preparation method is as follows:

[0036] Weigh 81.63g of high-purity indium powder (4N), moisten it with deionized water, and dissolve it in high-grade pure concentrated nitric acid; (standard solution) 7.57g, copper (standard solution) 7.98g, lead (standard solution) 8.67g, zinc (standard solution) 8.07g, calcium (standard solution) 8.10g, magnesium (standard solution) 8.16g, polyvinylpyrrolidone (G.R) 18g was added to a 3000mL three-necked flask.

[0037] The three-neck flask was placed in a water bath at 60°C, stirred with an electric stirrer at a speed of 600r / min for 10 minutes, and fully mixed. Put the glass electrode of the acidity meter into the solution, add ammonia water carefully with a liquid feeder, and stir while adding, stop adding ammonia water dropwise when the pH value of the solution reaches 8.0, continue stirring for 30 minutes,...

Embodiment 2

[0044] Taking the 100g 2# indium tin oxide chemical composition standard substance in the preparation table 1 as an example, the preparation method is as follows:

[0045] Weigh 80.56g of high-purity indium powder (4N), moisten it with deionized water, and dissolve it in high-grade pure concentrated nitric acid; (standard solution) 15.13g, copper (standard solution) 15.96g, lead (standard solution) 17.35g, zinc (standard solution) 16.33g, calcium (standard solution) 16.19, magnesium (standard solution) 16.33g, polyvinylpyrrolidone ( G.R) 20g was added to a 3000mL three-necked flask.

[0046] The three-neck flask was placed in a water bath at 62°C, stirred with an electric stirrer at a speed of 620r / min for 10 minutes, and fully mixed. Put the glass electrode of the acidity meter into the solution, carefully add ammonia water with a liquid adder, and stir while adding, stop adding ammonia water dropwise until the pH value of the solution reaches 8.1, continue stirring for 40 m...

Embodiment 3

[0053] Taking the preparation of 100g 3# indium tin oxide chemical composition standard substance in Table 1 as an example, the preparation method is as follows:

[0054] Weigh 79.48g of high-purity indium powder (4N), moisten it with deionized water, and dissolve it in high-grade pure nitric acid; liquid) 22.70g, copper (standard liquid) 23.94g, lead (standard liquid) 26.02g, zinc (standard liquid) 24.50g, calcium (standard liquid) 24.29, magnesium (standard liquid) 24.49g, polyvinylpyrrolidone (G.R) 22g, was added to a 3000mL three-necked flask.

[0055] The three-neck flask was placed in a water bath at 59°C, stirred with an electric stirrer at a speed of 610r / min for 15min, and fully mixed. Put the glass electrode of the acidity meter into the solution, carefully add ammonia water with a liquid adder, and stir while adding, stop adding ammonia water dropwise until the pH value of the solution reaches 8.2, continue stirring for 30 minutes, stop stirring, and age at room te...

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Abstract

The invention belongs to the technical field of stoichiometry. Based on the composition of the basic elements of indium tin oxide materials, indium oxide is the main body, supplemented by doped metal elements such as tin oxide, and the chemical composition standard material of indium tin oxide is composed of several doped materials with gradient distribution and different contents. It is prepared by a combination of homogeneous co-precipitation and sol-gel method. The chemical composition standard substance of the indium tin oxide material involved in the present invention is indium tin oxide powder doped with metal elements, the content of tin oxide is between 1% and 10%, and the gradient distribution; the content of doped metal elements is 0.05% to 0.5% %, gradient distribution, doped metal elements are one or more of Fe, Cu, Pb, Zn, Ca or Mg; the balance is indium oxide. The standard material has strong designability in composition, loose product structure, uniform powder particle size and element distribution, wide element coverage, and reasonable element content distribution. It is suitable for the verification and calibration of equipment and instruments for elemental analysis.

Description

technical field [0001] The invention belongs to the technical field of stoichiometry, and relates to the technology for preparing standard substances, in particular to the technology for preparing standard substances for the chemical composition of indium tin oxide materials. Background technique [0002] Indium tin oxide (ITO) is an n-type wide bandgap semiconductor. ITO has excellent spectral characteristics such as emissivity and transmittance, and is used in many fields, such as electrical materials, transparent electrode materials, and solar cell materials, especially in Screen display technology has a wide range of applications; ITO is a new type of wide-spectrum camouflage stealth absorber, which has great application prospects in composite stealth. [0003] The commonly used preparation methods of ITO powder include co-precipitation method, hydrothermal method, sol-gel method, spray combustion method and so on. Sol-gel method and co-precipitation method are the main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N21/71
Inventor 冀克俭李艳玲邓卫华张雨赵晓刚周彤华兰邵鸿飞刘元俊
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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