Method for measuring trace iron, aluminum, silicon and calcium in vanadium carbide

A determination method, vanadium carbide technology, applied in the field of analysis and detection, can solve the problems of cumbersome operation, long analysis cycle, unsuitable for production analysis, etc., and achieve the effect of easy operation and simple method

Inactive Publication Date: 2019-12-13
ZIGONG CEMENTED CARBIDE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These detection methods generally have the problems of cumbersome operation, long analysis cycle, and not suitable for production analysis.
[0004] In summary, there is no effective method in the prior art that can simultaneously and quickly determine the content of trace iron, aluminum, silicon, and calcium in vanadium carbide

Method used

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  • Method for measuring trace iron, aluminum, silicon and calcium in vanadium carbide
  • Method for measuring trace iron, aluminum, silicon and calcium in vanadium carbide
  • Method for measuring trace iron, aluminum, silicon and calcium in vanadium carbide

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Embodiment 1

[0020] The present embodiment provides a method for assaying trace amounts of iron, aluminum, silicon, and calcium in vanadium carbide, comprising the following steps;

[0021] 1. Test reagent:

[0022] Nitric acid (excellent pure);

[0023] Hydrofluoric acid (excellent pure);

[0024] National standard solution: the concentrations of iron, aluminum, silicon and calcium are all 1000 μg / mL;

[0025] Mixed standard solution: Accurately pipette 10.00mL of each national standard solution of iron, aluminum, silicon and calcium into the same 100mL volumetric flask, dilute to the mark with water, shake well, the concentration of iron, aluminum, silicon and calcium is 100μg / mL.

[0026] 2. Instrument and working parameters:

[0027] Instruments: American thermoelectric icp6300 inductively coupled plasma atomic emission spectrometer (with hydrofluoric acid corrosion-resistant central tube, spray chamber and nebulizer); electrothermal digestion instrument.

[0028] Working parameter...

Embodiment 2

[0041] The present embodiment provides a method for assaying trace amounts of iron, aluminum, silicon, and calcium in vanadium carbide, comprising the following steps;

[0042] 1. Test reagent:

[0043] Nitric acid (excellent pure);

[0044] Hydrofluoric acid (excellent pure);

[0045] National standard solution: the concentrations of iron, aluminum, silicon and calcium are all 1000 μg / mL;

[0046] Mixed standard solution: Accurately pipette 10.00mL of each national standard solution of iron, aluminum, silicon and calcium into the same 100mL volumetric flask, dilute to the mark with water, shake well, the concentration of iron, aluminum, silicon and calcium is 100μg / mL.

[0047] 2. Instrument and working parameters:

[0048] Instrument: American thermoelectric icp6300 inductively coupled plasma atomic emission spectrometer (with hydrofluoric acid corrosion-resistant central tube, spray chamber and atomizer); electrothermal digestion instrument;

[0049] Working parameters:...

Embodiment 3

[0062] The present embodiment provides a method for assaying trace amounts of iron, aluminum, silicon, and calcium in vanadium carbide, comprising the following steps;

[0063] 1. Test reagent:

[0064] Nitric acid (excellent pure);

[0065] Hydrofluoric acid (excellent pure);

[0066] National standard solution: the concentrations of iron, aluminum, silicon and calcium are all 1000 μg / mL;

[0067] Mixed standard solution: Accurately pipette 10.00mL of each national standard solution of iron, aluminum, silicon and calcium into the same 100mL volumetric flask, dilute to the mark with water, shake well, the concentration of iron, aluminum, silicon and calcium is 100μg / mL.

[0068] 2. Instrument and working parameters:

[0069] Instrument: American thermoelectric icp6300 inductively coupled plasma atomic emission spectrometer (with hydrofluoric acid corrosion-resistant central tube, spray chamber and atomizer); electrothermal digestion instrument;

[0070] Working parameters:...

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Abstract

The invention provides a method for determining trace iron, aluminum, silicon and calcium in vanadium carbide. Specifically, spectral interference of a vanadium matrix is eliminated through a standardaddition method, a sample is dissolved with a small amount of hydrofluoric acid and nitric acid, constant volume and uniform shaking are performed, several equal parts of solutions are taken, iron, aluminum, silicon and calcium standard solutions are added into each part of solution, and trace iron, aluminum, silicon and calcium in vanadium carbide are rapidly determined through inductively coupled plasma emission spectrometry. The detection method is simple, convenient and easy to operate, can accurately measure the contents of trace iron, aluminum, silicon and calcium in the vanadium carbide, and is suitable for production analysis.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and in particular relates to a method for determining trace amounts of iron, aluminum, silicon and calcium in vanadium carbide. Background technique [0002] Vanadium carbide has the advantages of good chemical stability and high temperature performance. Vanadium carbide is used as a grain growth inhibitor or grain refiner in cemented carbide, cutting tools, and steelmaking industries, which can significantly improve alloy properties. Vanadium carbide It is also used in spraying materials, superhard film materials, welding materials and other fields, such as hot forging dies, jet engine turbine blades, valves and rocket nozzle coatings, etc. Iron, aluminum, silicon, and calcium are harmful impurities in cemented carbide. Therefore, the inspection of raw material vanadium carbide in cemented carbide production has the detection requirements of these trace impurities. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 菅豫梅王培薛林廖军李浩颜娟
Owner ZIGONG CEMENTED CARBIDE CORP
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