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Method for analyzing chemical components contained in aluminum-molybdenum alloy

A technology of aluminum-molybdenum alloy and chemical composition, which is applied in the field of analysis of chemical composition in aluminum-molybdenum alloy, to achieve good precision, accurate results and good application effect

Inactive Publication Date: 2014-01-08
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned technologies, the present invention provides an analysis method of chemical composition in an aluminum-molybdenum alloy, the present invention adopts inductively coupled plasma atomic emission spectrometry , using an inductively coupled plasma emission spectrometer to test the sample, which solves the problem that there is no analytical method for the simultaneous determination of aluminum, molybdenum, iron, and silicon in aluminum-molybdenum alloys. The present invention has the characteristics of accurate results and good application effects , suitable for a wide range of promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 2

[0139] 1) The parameters of the instrument are set as follows:

[0140] Power: 1.4KW; Plasma gas flow: 17L / min; Auxiliary gas flow: 0.50L / min; Atomizing gas flow: 0.90L / min; Sample flow: 1.6mL / min; Stabilization time: 20s; Sample lifting time : 15s; atomizer cleaning time: 10s; repeated measurement times: 1 time.

[0141] 2) Test method

[0142] Accurately weigh 0.2000g sample in a conical flask, moisten it with water, add 10mL sulfuric acid and 10mL nitric acid in sequence, wash the bottle wall with water, and heat to dissolve at low temperature. After the dissolution is complete and cooled to room temperature, transfer and dilute to a 250mL volumetric flask. Make a blank solution along with the sample.

[0143] The prepared working curve standard solution is as follows, the unit is mg / mL:

[0144] Standard No. Al Mo Fe Si

[0145] (1) 180.00 220.00 0.35 0.35

[0146] (2) 154.00 246.00 0.60 0.60

[0147] (3) 141.00 256.00 0.90 0.90

[0148] Under the selected conditio...

specific Embodiment 3

[0149] 1) The parameters of the instrument are set as follows:

[0150] Power: 1.3KW; Plasma gas flow: 16L / min; Auxiliary gas flow: 0.3L / min; Atomizing gas flow: 0.80L / min; Sample flow: 1.5mL / min; Stabilization time: 25s; Sample lifting time : 20s; atomizer cleaning time: 8s; repeated measurement times: 2 times.

[0151] 2) Test method

[0152] Accurately weigh 0.0990g of the sample in a conical flask, wet it with water, add 5mL of sulfuric acid and 3mL of nitric acid in sequence, rinse the wall of the bottle with water, and heat at low temperature to dissolve. After the dissolution is complete and cooled to room temperature, transfer and dilute to a 250mL volumetric flask. Make a blank solution along with the sample.

[0153] The prepared working curve standard solution is as follows, the unit is mg / mL:

[0154] Standard No. Al Mo Fe Si

[0155] (1) 170.00 235.00 0.10 0.10

[0156] (2) 149.00 251.00 0.50 0.50

[0157] (3) 136.00 260.00 0.75 0.75

[0158] Under the sel...

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Abstract

The invention relates to a method for analyzing chemical components contained in an aluminum-molybdenum alloy and relates to a material analyzing and testing technology. In the method disclosed by the invention, a sample piece is tested by using an inductively coupled plasma emission spectrometer according to an inductively coupled plasma atomic emission spectrometry, thereby solving the problem that no analytical method capable of simultaneously measuring aluminum, molybdenum, iron and silicon which are contained in the aluminum-molybdenum alloy is available at present. According to the established method, the correlation coefficients of various spectral lines are all more than 0.995, the detection limit is lower than 0.01%, and ten-time relative standard deviation is lower than 1%. Furthermore, the method disclosed by the invention has the advantages of good precision degree and low detection limit, can meet the requirements of analysis and testing and is suitable for large-scale popularization and application.

Description

【Technical field】 [0001] The invention relates to a material analysis and testing technology, in particular to an analysis method for chemical components in an aluminum-molybdenum alloy. 【Background technique】 [0002] It is known that aluminum and molybdenum, as the alloying elements of titanium alloys, have a great influence on the performance of titanium alloys. In the production of titanium alloys, the content of aluminum and molybdenum must be strictly controlled and controlled. In the production of titanium alloys, due to Molybdenum has a high melting point (melting point is 2620°C), and it is difficult to add directly to smelting, while the melting point of aluminum-molybdenum master alloy is similar to that of pure iron. Therefore, the introduction of aluminum and molybdenum is mainly by adding a certain amount of different grades. Aluminum-molybdenum alloys are widely used as raw materials for smelting titanium alloys containing Al and Mo. The difference in the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/28G01N1/44
Inventor 杜米芳
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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