Method for detecting components of SiAl alloy

Abstract

The invention provides a method for detecting components of a SiAl alloy, which comprises the following steps: heating a mixed acid, mixing the mixed acid with the SiAl alloy to obtain a mixed solution, and placing the mixed solution in an inductively coupled plasma emission spectrometer for detection, wherein the mixed acid comprises hydrofluoric acid and nitric acid in a volume ratio of (1.8-2.2):1, the concentration of the hydrofluoric acid is 38-42 wt%, and the concentration of the hydrofluoric acid is 63wt%-68wt%; the SiAl alloy can be dissolved in the mixed acid of the hydrofluoric acid and the nitric acid until the mixed solution is in a clear and transparent state. The detection standard of ICP-OES on a machine is met, the method is simple to operate, two main elements of Si and Al can be detected at the same time, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of SiAl alloys, in particular to a method for detecting SiAl alloy components. Background technique [0002] SiAl alloy targets are of great significance in the coating of the electronics industry. The commonly used SiAl alloy testing equipment is Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). It can be detected on the machine after being dissolved by acid solution. ICP-OES is mainly used to detect most metal elements and some non-metal elements. [0003] At present, there is no clear dissolution method for SiAl alloy, so it is necessary to experiment to find a method to dissolve, and then obtain a sample that can be tested by ICP-OES. [0004] CN111289499A discloses a method for simultaneously detecting multiple trace elements in iron-containing waste acid, including the following steps: sample pretreatment: weigh 2-15 g of iron-containing waste acid sample, add 20-50 mL of hydrochlor...

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Problems solved by technology

[0004] CN111289499A discloses a method for simultaneously detecting multiple trace elements in iron-containing waste acid, including the following steps: sample pretreatment: weigh 2-15 g of iron-containing waste acid sample, add 20-50 mL of hydrochloric acid, 2-5 g of oxidant, Stir until the iron-containing waste acid is completely oxidized into ferric chloride, transfer the sample to be tested to a separatory funnel, add 10-30mL extractant, and extract 3-5 times to remove Fe 3+ Extract cleanly, take the water layer, enrich in a water bath, transfer the sample solution to a 50mL volumetric flask, shake it at a constant volume, and make a blank at the same time; select the element spectrum line; draw a standard curve; detect the sample, this method does not involve SiAl alloy composition detection

[0005] CN108613970A discloses a method for measuring the rhenium element in rare earth nodular cast iron. The method includes dissolving samples in hydrochloric acid nitric acid hydrofluoric acid, complexing saturated boric acid, and residue burning method to measure the content of rhenium in rare earth nodular cast iron. The content of rhenium in rare earth ductile iron was detected by coupled plasma emission spectrometer, which did not involve the detection of SiAl alloy composition

[0006] CN104316512A discloses a method for measuring the content of barium in the inoculant, the method comprising the steps of: preparing a standard curve solution of barium, configuring the standard curve solution, measuring the standard curve solution on an inductively coupled plasma emission spectrometer, and using standard The concentration of the barium in the curve solution is the abscissa, and the emission spectrum intensity of the barium in the standard curve solution measured is the ordinate to draw the working curve, and the same measurement conditions of the previous steps are used to measure the liquid to be tested. The concentration of barium in the test solution, and then calculate the content of barium in the sample to be tested, this method does not involve the detection of SiAl alloy composition

[0007] At present, there is no clear dissolution method for SiAl, so it is necessary to develop a method to dissolve SiAl alloys, and then obtain samples that can be tested by ICP-OES

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