Method for measuring lithium element in WE43A alloy
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An alloy and element technology, applied in the field of determination of lithium element in WE43A alloy, can solve problems such as unsuitable determination of lithium element, achieve the effect of overcoming matrix background interference, reducing detection limit, and increasing sheath gas flow
Inactive Publication Date: 2018-10-09
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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This analysis method is suitable for the determination of other elements in WE43A alloy, but not for the determination of lithium
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Embodiment 1
[0050]This method of determining lithium in WE43A alloy uses HJY ULTIMA IIC inductively coupled plasma emission spectrometer. The working conditions of the instrument are as follows: high frequency frequency: 40.68MHz; incident power: 1.0kW; reflected power: <10W; incident slit : 20μm; exit slit: 15μm; argon gas flow: cooling gas flow: 15L / min; sheath gas flow: 0.5L / min;
[0051] The reagents used in the method for determining the ruthenium content in superalloys by this microwave digestion method are as follows:
[0052] Hydrochloric acid, with a density of 1.19g / mL, superior grade or above;
[0053] Nitric acid, with a density of 1.42g / mL, superior grade or above;
[0054] Hydrofluoric acid, with a density of 1.15g / mL, superior grade or above;
[0055] Zinc I, manganese I, silicon I, iron I, copper I, nickel I and other single element standard solutions, the mass-volume concentration is 1.00mg / mL, purchased;
[0056] Zinc II, manganese II, silicon II, iron II, copper II, ...
Embodiment 2
[0100] This method of determining lithium in WE43A alloy uses HJY ULTIMA IIC inductively coupled plasma emission spectrometer. The working conditions of the instrument are as follows: high frequency frequency: 40.68MHz; incident power: 1.0kW; reflected power: <10W; incident slit : 10μm; exit slit: 15μm; argon gas flow: cooling gas flow: 15L / min; sheath gas flow: 1.0L / min;
[0101] The reagents used in the method for determining the ruthenium content in superalloys by this microwave digestion method are as follows:
[0102] Hydrochloric acid, with a density of 1.19g / mL, superior grade or above;
[0103] Nitric acid, with a density of 1.42g / mL, superior grade or above;
[0104] Hydrofluoric acid, with a density of 1.15g / mL, superior grade or above;
[0105] Zinc I, manganese I, silicon I, iron I, copper I, nickel I and other single element standard solutions, the mass-volume concentration is 1.00mg / mL, purchased;
[0106] Zinc II, manganese II, silicon II, iron II, copper II, n...
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Abstract
The invention relates to a method for measuring a lithium element in WE43A alloy and belongs to the technical field of metal material analysis. According to four methods of dissolving the lithium element in the WE43A alloy, detection is conducted by an inductive coupling plasma emission spectrometer, and the application effect is good through multi-time inspection on lithium element content samples in the WE43A alloy; a synthetic matrix is matched with a working curve, the background interference of the matrix is overcome, and the characteristics of wide linear range, high sensitivity as wellas accurate and reliable analysis result are achieved; hydrofluoric acid is added in the sample dissolving process, so that zirconium and rhenium elements in the test sample are dissolved completely and the sample solution is clear; the gas flow of a sheath is increased, the lithium element analysis spectral line intensity is improved and the element detection limit is increased; and by the measuring method, the samples are dissolved completely, the analysis accuracy is high, the operation is easy to master, and a good effect is achieved on the aspects of dissolving the WE43A alloy and measuring the lithium element content of the WE43A alloy.
Description
technical field [0001] The invention relates to a method for measuring lithium element in WE43A alloy, which belongs to the technical field of metal material analysis. Background technique [0002] At present, in terms of detection of various alloy elements, inductively coupled plasma (ICP) emission spectroscopy is widely used in the determination of element content due to its advantages of low detection limit, high precision, wide linear range of concentration determination, and small mutual interference between elements. It has become an analytical method unmatched by other analytical techniques. This method is not suitable for the determination of lithium in WE43A alloy. [0003] In general, the dissolution method of the magnesium alloy sample is: use a single hydrochloric acid, nitric acid, hydrofluoric acid to dissolve the sample, transfer it into a volumetric flask after the dissolution is complete, and then measure it on the analytical instrument. This analysis meth...
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