Method of measuring silicon content in nitrogen-manganese alloy
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A technology of nitrogen-manganese alloy and silicon content, which is applied in the field of instrument analysis, can solve the problems of long cycle time and cumbersome operation, and achieve the effects of low detection limit, shortened operation process, and reduced labor expenditure
Inactive Publication Date: 2017-05-31
INNER MONGOLIA BAOTOU STEEL UNION
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[0003] The currently used chemical analysis methods for detecting silicon content are cumbersome to operate, have a long period, and are affected by some interference factors and conditions, etc.
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[0046] Plasma emission spectrometer adopts ICP-AES: produced by American PE company, OPTIMA5300DV two-way observation type full-spectrum direct-reading plasma spectrometer, solid-state detector (CCD), wavelength range 190-780nm, echelle grating, jewel cross nebulizer, SCOTTON Fog chamber, swirling flow chamber for high content, winXP computer operating system, Winlab32 software, working parameters are shown in Table 1. The measurement wavelength of silicon is: 251.612nm.
[0047] Table 1 ICP-AES instrument working condition parameter list
[0048] parameter high frequency power Cooling air flow Auxiliary air flow Carrier gas flow Solution lift value 40.68MHZ 1300W 15L / min 0.2L / min 0.8L / min 1.5mL / min parameter rinse time Pre-burn time Integration time Reading delay observation height Observation method value 8s 45s 2~10s automatically 30s 15mm radial or axial
[0049] 1. Draw the calibration curve;
[0050...
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Abstract
The invention discloses a method of measuring silicon content in nitrogen-manganese alloy, comprising: adding hydrochloric acid, nitric acid and water, and dissolving a nitrogen-manganese alloy sample to form sample solution; adding perchloric acid in the sample solution, heating to dissolve salts, and filtering with filter paper; transferring precipitate and the filter paper to a platinum crucible, ashing at low temperature, and combusting in a high-temperature furnace at 800-850 DEG C; adding sodium carbonate and boric acid mixed solvent, melting in the high-temperature furnace, taking out, and cooling; putting the platinum crucible in a beaker holding water and hydrochloric acid, boiling until big bubbles occur, cooling to room temperature, washing the platinum crucible, combining extract and mother liquid, and transferring to a volumetric flask for volume fixation; introducing the combined solution to a plasma emission spectrograph light source, analyzing by using reagent blank as a reference according to instrument analytical procedure, and measuring silicon content. The method has the advantages of low detection limit, good precision, low light interference, high speed, good accuracy, good practicality, and the like.
Description
technical field [0001] The invention relates to an instrument analysis technique, in particular to a method for measuring silicon content in nitrogen-manganese alloys. Background technique [0002] As we all know, manganese nitrogen has a wide range of uses in alloy steel and non-ferrous metal alloys. Manganese plays a role in deoxidation, denitrification and alloying in steelmaking. The presence of manganese can eliminate or weaken the hot embrittlement caused by sulfur, thereby improving the hot workability of steel. Manganese and iron form a solid solution to increase the hardness and strength of ferrite and austenite in steel. Manganese is also a carbide forming element and enters cementite to replace a part of iron atoms. Nitrogen mainly plays a role of solid solution strengthening in steel, and combines with alloy elements such as Cr, Al, V, Ti in steel to form nitrides, which increases the hardness of steel. Nitrogen also plays a role in forming and stabilizing the...
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