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Method for measuring vanadium element in titanium alloy

A measurement method, titanium alloy technology, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problems of spectral line interference, poor precision and accuracy, etc.

Inactive Publication Date: 2012-06-27
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the spectral line interference is serious
At present, the content of V measured by inductively coupled plasma emission spectrometry is below 10%, and if it is higher than 10%, its precision and accuracy are very poor

Method used

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  • Method for measuring vanadium element in titanium alloy

Examples

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Comparison scheme
Effect test

example 1

[0026] Weigh 0.1000g (accurate to 0.0001g) titanium alloy sample with a vanadium content of 15.10% in a 200mL conical flask, add 10mL sulfuric acid (1+1), heat at low temperature until the sample is basically dissolved completely, add a few drops of nitric acid, continue Heat at low temperature until it is completely decomposed, and the test solution is boiled to 5mL. Cool to room temperature, quantitatively transfer the solution to a 200mL volumetric flask, dilute to the mark with high-purity water, and mix well to obtain the solution to be tested. The solution to be tested was analyzed under the following conditions: analytical spectral line 290.880nm, high-frequency power 1300W, atomizing gas flow rate 0.75L / min, auxiliary gas flow rate 0.20L / min, sample lifting volume 1.6mL / min, observation method: axis Towards, using an inductively coupled plasma emission spectrometer to measure the spectral line intensity is 3016500.2, and according to the standard working curve, the con...

example 2

[0028] Weigh 0.1000g (accurate to 0.0001g) titanium alloy sample with a vanadium content of 15.10% in a 200mL conical flask, add 15mL sulfuric acid (1+1), heat at low temperature until the sample is basically dissolved completely, add a few drops of nitric acid, continue Heat at low temperature until it is completely decomposed, and cook the test solution to 8mL. Cool to room temperature, quantitatively transfer the solution to a 200mL volumetric flask, dilute to the mark with high-purity water, and mix well to obtain the solution to be tested. The solution to be tested was analyzed under the following conditions: analytical spectral line of 290.880nm, high-frequency power of 1300W, atomizing gas flow rate of 0.80L / min, auxiliary gas flow rate of 0.20L / min, sample lifting volume of 1.7mL / min, observation method: axis Towards, using the inductively coupled plasma emission spectrometer to measure the spectral line intensity is 3031668.0, and according to the standard working cur...

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Abstract

The invention discloses a method for measuring vanadium element in titanium alloy. The method comprises the following steps of: dissolving a sample by using sulfuric acid; adding a few drops of nitric acid; adding pure water to prepare sample solution; preparing standard solution containing vanadium of different concentrations; determining spectral line intensity of the standard solution by using an inductively coupled plasma emission spectrometer, and drawing a working curve by taking vanadium element concentration as an abscissa and the spectral line intensity as an ordinate; determining the spectral line intensity of the sample solution by using the inductively coupled plasma emission spectrometer; calculating the concentration of the vanadium element according to the working curve; and selecting an analytical spectral line as 290.880 nm in a process of determining the spectral line intensity by using the inductively coupled plasma emission spectrometer.

Description

technical field [0001] The invention relates to a method for measuring vanadium elements in titanium alloys, in particular to a method capable of quickly and accurately measuring high-content vanadium elements in titanium alloys. Background technique [0002] Titanium and its alloys have many advantages such as light weight, high strength, strong heat resistance, and corrosion resistance. They are known as "future metals" and are new structural materials with development prospects. Titanium and its alloys not only have very important applications in aviation and aerospace industries, but also have been widely used in many industrial sectors such as chemical industry, petroleum, light industry, metallurgy, and power generation. [0003] The content of major elements and interstitial impurity elements in titanium alloy has a great influence on the mechanical properties of titanium materials. As the content of these elements changes, its mechanical properties and hardness also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 朱莉
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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