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Method for determining content of tungsten element in nickel-based alloy

An element content, nickel-based alloy technology, applied in material excitation analysis, electrical excitation analysis, etc., can solve problems such as long detection period, detection range that cannot completely cover the range of tungsten element content, and cumbersome detection steps.

Pending Publication Date: 2020-07-17
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection standard requires steps such as dissolution, oxidation, precipitation, filtration, volatilization, and burning of the sample, as well as calibration of molybdenum. The detection steps are cumbersome and the detection cycle is long.
At the same time, the detection range cannot completely cover the content range of tungsten in the commonly used nickel-based alloys.

Method used

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  • Method for determining content of tungsten element in nickel-based alloy
  • Method for determining content of tungsten element in nickel-based alloy
  • Method for determining content of tungsten element in nickel-based alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Determination of the content of tungsten in the nickel-based alloy sample 1 (nickel-chromium-molybdenum alloy) to be tested.

[0042] 1. Determination of analysis conditions

[0043] Module voltage: 8.0V; phase voltage: 3.5V; generator power: 60W; flushing time: 70s; integration time: 50s.

[0044] Due to the high content of molybdenum in the nickel-chromium-molybdenum alloy, when the wavelength of the tungsten element analysis spectrum is 220.45nm and 400.875nm, the molybdenum element interferes with the detection of tungsten element, so the selected wavelength is 400.988nm.

[0045] 2. Drawing and confirmation of calibration curve

[0046] Table 1 standard sample

[0047]

[0048]

[0049] Fix the above analysis conditions, and select 4 nickel-based alloy standard samples covering different gradient tungsten element contents as shown in Table 1 for the establishment of the calibration curve according to the needs. The average relative intensity, wi...

Embodiment 2

[0075] Example 2: Determination of the content of tungsten in the nickel-based alloy sample 2 (nickel-chromium-iron alloy).

[0076] 1. Determination of analysis conditions

[0077] Module voltage: 8.25V; phase voltage: 3.75V; generator power: 70W; flushing time: 80s; integration time: 55s.

[0078] Due to the high content of iron in nickel-chromium-iron alloy, when the wavelength of tungsten element analysis spectrum is 220.45nm and 400.988nm, the iron element interferes with the detection of tungsten element, so the selected wavelength is 400.875nm.

[0079] 1. Drawing and confirmation of calibration curve

[0080] Table 8 Standard Samples

[0081]

[0082] Fix the above analysis conditions, and select 4 nickel-based alloy standard samples covering different gradient tungsten element contents as shown in Table 1 for the establishment of the calibration curve according to the needs. The average relative intensity, with the tungsten element content as the abscissa, and t...

Embodiment 3

[0108] Embodiment 3: Determination of the content of tungsten in the nickel-based alloy sample 3 (nickel-chromium-cobalt alloy) to be tested.

[0109] 1. Determination of analysis conditions

[0110] Module voltage: 8.35V; phase voltage: 3.85V; generator power: 75W; flushing time: 85s; integration time: 60s.

[0111] Due to the high content of titanium in the nickel-chromium-cobalt alloy, when the wavelength of the tungsten element analysis spectrum is 400.875nm and 400.988nm, the titanium element interferes with the detection of the tungsten element, so the selected wavelength is 220.45nm.

[0112] 2. Drawing and confirmation of calibration curve

[0113] Table 15 Standard Samples

[0114]

[0115] Fix the above analysis conditions, and select 4 nickel-based alloy standard samples covering different gradient tungsten element contents as shown in Table 1 for the establishment of the calibration curve according to the needs. The average relative intensity, with the tungst...

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Abstract

The invention discloses a method for determining the content of a tungsten element in a nickel-based alloy by applying a glow discharge spectrometer approach technology method. The method comprises the following specific determination steps: (1) determining analysis conditions; (2) drawing and confirming a calibration curve; (3) standardizing types; (4) analyzing a sample; and (5) processing testdata. The detection method provided by the invention is convenient to operate, rapid in measurement and accurate in detection, greatly improves the detection efficiency and accuracy of the tungsten element in the nickel-based alloy, widens the detection range of the tungsten element in the nickel-based alloy, and is suitable for measuring the content of the tungsten element in nickel-based alloysof various models.

Description

technical field [0001] The invention belongs to the technical field of metallurgical material analysis, in particular to a method for measuring the content of tungsten element in nickel-based alloys by using a glow discharge spectrometer approach technique method Background technique [0002] Nickel-based alloys are mainly composed of Fe, Ni, Cr, Mo and other main elements. With the in-depth development of various experimental researches, the addition of different alloying elements has a certain impact on the performance of nickel-based alloys. Therefore, the nickel-based alloys The accurate determination of each element in is very critical. Among them, W element mainly enters the alloy solid solution, which slows down the high-temperature diffusion rate of Al, Ti and Cr, strengthens the atomic bonding force in the solid solution, and slows down the softening rate. Especially when the service temperature is higher than 1000℃, the strengthening effect of W is more significan...

Claims

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Application Information

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IPC IPC(8): G01N21/67
CPCG01N21/67
Inventor 刘洁葛晶晶任玲玲谭胜楠郭圣洁禹靑霄杨晓倩戚振南杨慧贤
Owner HEBEI IRON AND STEEL
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