Method for measuring contents of Fe, Mn, Cu, Tin and Mg in titanium sponge, titanium and titanium alloy

A determination method and technology of titanium alloy, applied in the field of analysis and testing, can solve the problems of cumbersome operation, large consumption of chemical reagents, low measurement efficiency, etc., and achieve the effects of good stability, reliable method and convenient operation.

Inactive Publication Date: 2012-10-17
WUKUN STEEL
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AI Technical Summary

Problems solved by technology

[0003] The determination of iron, manganese, copper, tin and magnesium in sponge titanium, titanium and titanium alloys, in the current national standard analysis methods, mostly adopts spectrophotometry, which not only is cumbersome to operate, but also requires a long process of analysis and determination, and consumes a lot of chemical reagents , not only pollute the environment, but also endanger the health of operators, and at the same time, the determination efficiency is low, and it is not conducive to reducing costs
It is also determined by flame atomic absorption spectrometry. Although the iron, manganese,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0014] Prepare the following standard solutions as usual:

[0015] 1. Preparation of iron standard solution:

[0016] 1A, according to the amount of 60mL / g high-purity iron, put commercially available 0.5000g high-purity iron into 30mL dilute hydrochloric acid, the dilute hydrochloric acid has the following volume ratio: HCl:H 2 O=1:1, heat at 100°C until the high-purity iron dissolves, add 10 drops of commercially available analytical pure nitric acid for oxidation, boil at 100°C to drive away nitrogen oxides, rinse the cup wall with water, and cool the solution to room temperature, add water to dilute to a solution concentration of 500 μg / mL to obtain an iron standard solution;

[0017] 1B. Pipette 20.00 mL of the iron standard solution prepared in step 1A into a 500 mL volumetric flask, dilute to the mark with water, and shake well. This solution contains 20 μg / mL of iron;

[0018] 2. Preparation of manganese standard solution:

[0019] 2A. Wash commercially available el...

Embodiment 2

[0042] Determination of iron, manganese, copper, tin and magnesium in sponge titanium to be tested:

[0043] 1. Preparation of titanium sponge sample solution to be tested:

[0044] 1A. According to the amount of 175 mL / g sample, add 35 mL of dilute hydrochloric acid to 0.2000 g of titanium sponge sample. The volume ratio of the dilute hydrochloric acid is: HCl: H 2 O=1:4, then add 5 mL of commercially available analytically pure hydrofluoric acid to the titanium sponge sample at an amount of 25 mL / g sample, and heat at 100 °C until the titanium sponge sample is completely dissolved to obtain 20 mL solution;

[0045] 1B. According to the amount of 15 g / g sample, add 3 g of commercially available analytical pure boric acid to the solution in step 1A, heat at 100°C until the solution is dissolved, and then cool to room temperature to obtain a mixed solution;

[0046]1C. According to the amount of 20mL / g sample, add 4mL of strontium chloride solution with a concentration of 50 ...

Embodiment 3

[0050] Determination of iron, manganese, copper, tin and magnesium in titanium to be tested:

[0051] 1. Preparation of titanium sample solution to be tested:

[0052] 1A. According to the amount of 225 mL / g sample, add 45 Ml of dilute hydrochloric acid to 0.2000 g of titanium sample. The volume ratio of the dilute hydrochloric acid is: HCl: H 2 O=1:4, add 6 mL of commercially available analytical pure hydrofluoric acid to the titanium sample at an amount of 30 mL / g sample, heat at 150 °C until the titanium sample is completely dissolved, and obtain a 30 mL solution ;

[0053] 1B. According to the amount of 20 g / g sample, add 4 g of commercially available analytically pure boric acid to the solution in step 1A, heat at 150° C. until the solution is dissolved, and then cool to room temperature to obtain a mixed solution;

[0054] 1C. According to the amount of 30mL / g sample, add 6mL of strontium chloride solution with a concentration of 50 mg / mL to the mixed solution in step ...

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PUM

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Abstract

The invention provides a method for measuring contents of Fe, Mn, Cu, Tin and Mg in titanium sponge, titanium and titanium alloy, which comprises the steps of: adding hydrochloric acid, hydrofluoric acid and boric acid into the sample for dissolving the sample; and adding strontium chloride for eliminating interference to obtain a sample liquid to be measured. The conventional flame atomic absorption spectrometry is used for measuring the absorbance of the sample liquid to be measured, and the corresponding content values of Fe, Mn, Cu, Tin and Mg can be obtained in the standard working curve of Fe, Mn, Cu, Tin and Mg according to the absorbance. The method not only is simple in operation, but also is high in accuracy rate of contents of Fe, Mn, Cu, Tin and Mg; and the measurement result is good in stability, repeatability and accuracy, thus completely meeting the demand of measuring the contents of Fe, Mn, Cu, Tin and Mg in titanium sponge, titanium and titanium alloy in the daily life.

Description

[0001] technical field [0002] The invention relates to a method for determining metal elements, in particular to a method for determining the content of iron, manganese, copper, tin and magnesium in sponge titanium, titanium and titanium alloys, and belongs to the technical field of analysis and testing. Background technique [0003] The determination of iron, manganese, copper, tin and magnesium in sponge titanium, titanium and titanium alloys, in the current national standard analysis methods, mostly adopts spectrophotometry, which not only is cumbersome to operate, but also requires a long process of analysis and determination, and consumes a lot of chemical reagents , not only pollute the environment, but also endanger the health of operators, and at the same time, the determination efficiency is low, and it is not conducive to reducing costs. It is also determined by flame atomic absorption spectrometry. Although the iron, manganese, copper, tin and magnesium elements...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N21/31
Inventor 陶俊
Owner WUKUN STEEL
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