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Method for detecting content of impurity elements in aluminum alloy powder

A detection method and impurity element technology, which is applied in the detection field of impurity element content in aluminum alloy powder, can solve the problems of being unable to compress dense bulk samples and fail to meet the requirements of GD-MS analysis, and achieve low detection limit, dynamic The effect of wide linear range and less matrix interference

Inactive Publication Date: 2019-02-01
XINJIANG JOINWORLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the sample of aluminum alloy powder is affected by the degree of thickness, crystallization form, etc., it cannot be pressed into a dense block sample, which cannot meet the analysis requirements of GD-MS for samples.

Method used

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  • Method for detecting content of impurity elements in aluminum alloy powder
  • Method for detecting content of impurity elements in aluminum alloy powder
  • Method for detecting content of impurity elements in aluminum alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Put the aluminum alloy powder 1# sample to be tested into a high-purity graphite crucible, heat it to 1200°C in a high-purity helium-protected atmosphere furnace, and keep it warm for 4 hours to heat the aluminum alloy powder to a molten state.

[0050] (2) After a period of cooling at room temperature, the aluminum alloy powder sample condenses into an irregular block aluminum alloy sample.

[0051] (3) Under the pressure of 5KN, the SYP-30TS manual tablet press (Shanghai Xinnuo Instrument) was used to press repeatedly, and the sample was pressed into a sheet sample with a diameter of 20mm and a thickness of 4mm to obtain an aluminum alloy sample.

[0052] (4) The aluminum alloy sample is ultrasonically cleaned twice in pure water, finally ultrasonically cleaned with ethanol, and dried.

[0053] (5) Put the cleaned aluminum alloy sample into the GD-MS sample holder, use Element GD glow discharge mass spectrometer, the best working conditions in DC mode are: dischar...

Embodiment 2

[0061] (1) Put aluminum alloy standard sample 6063-1 (Standard Sample Research Institute of Shandong Academy of Metallurgical Sciences, chips) into a high-purity graphite crucible, heat it to 1200°C for 4 hours in a high-purity helium-protected atmosphere furnace , the aluminum alloy powder is heated to a molten state.

[0062] (2) After a period of cooling at room temperature, the aluminum alloy powder sample condenses into an irregular block aluminum alloy sample.

[0063] (3) Under a pressure of about 5KN, use a SYP-30TS manual tablet press (Shanghai Xinnuo Instrument) to press repeatedly to press the sample into a sheet sample with a diameter of 20mm and a thickness of 6mm to obtain an aluminum alloy sample.

[0064] (4) The aluminum alloy sample is ultrasonically cleaned twice in pure water, finally ultrasonically cleaned with ethanol, and dried.

[0065] (5) Put the cleaned aluminum alloy sample into the GD-MS sample holder, use Element GD glow discharge mass spectromet...

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Abstract

The invention provides a method for detecting the content of impurity elements in aluminum alloy powder. The method for detecting the content of the impurity elements in the aluminum alloy powder comprises the following steps of (1) heating a to-be-detected aluminum alloy powder sample to be molten; (2) cooling molten aluminum alloy to obtain an aluminum alloy blocky sample; (3) compressing the aluminum alloy blocky sample to obtain an aluminum alloy sample wafer; (4) cleaning the aluminum alloy sample wafer; (5) placing the cleaned aluminum alloy sample wafer into a GD-MS sample clamp, and ina direct-current mode, setting a discharge current to be 60-90 mA and discharge gas flow to be 350-490 mL / min; and (6) performing pulse glow discharge mass spectrometer analysis under the set condition in the step (5), collecting the signal intensity of the to-be-detected elements, and calculating out the mass fraction of the trace impurity elements by applying a relative sensitivity factor. Themethod for detecting the content of the impurity elements in the aluminum alloy powder is simple and easy to operate and high in detection speed; and the glow discharge mass spectrometry analysis method for simultaneous detection of multiple elements in the aluminum alloy powder can be carried out.

Description

technical field [0001] The invention specifically relates to a method for detecting the content of impurity elements in aluminum alloy powder. Background technique [0002] In recent years, the advantages of aluminum matrix composites such as low density, strong corrosion resistance, excellent electrical and thermal conductivity, and good processability have become the mainstream of current metal matrix composites research. As a relatively mature preparation method of aluminum matrix composites, powder metallurgy method uniformly disperses the reinforcing phase into aluminum alloy powder, and prepares aluminum matrix composites by ball milling and powder metallurgy methods. The prepared materials have superior performance and good The interface bonding state greatly improves the strength of the aluminum alloy material. [0003] Aluminum alloy powder is the main raw material for the preparation of aluminum matrix composites by powder metallurgy. The type and content of impur...

Claims

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Application Information

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IPC IPC(8): G01N27/68G01N1/28G01N1/34G01N1/44
CPCG01N1/286G01N1/34G01N1/44G01N27/68
Inventor 肖丽梅马冰白永冰王秀娟张丽娟
Owner XINJIANG JOINWORLD CO LTD
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