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

A nickel-based alloy, element content technology, applied in the preparation of test samples, thermal excitation analysis, material excitation analysis, etc., can solve the problems of content interference, low sensitivity, etc., to achieve simple operation, improve detection efficiency, and good test accuracy. Effect

Inactive Publication Date: 2020-04-17
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Generally, the recommended sensitive analysis lines for tantalum are 268.517nm, 263.558nm, 226.230nm, 240.063nm. When the actual resolution of ICP-AES is greater than 0.010nm, Ta268.517nm has the highest sensitivity, but it is greatly interfered by the content of Cr and V elements. The relative sensitivity of Ta263.558nm, Ta226.230nm, Ta240.063nm and other wavelengths is relatively low, and they are interfered by the wavelengths of Fe, Ni, Cr, W and other elements

Method used

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

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Embodiment 1

[0022] Embodiment 1: Tantalum element in nickel-based alloys Taking a nickel-based alloy sample as an example, details are as follows.

[0023] (1) Prepare standard solution: Accurately weigh 6 parts of 0.2500g high-purity nickel, add mixed acid prepared from 6ml high-purity hydrochloric acid, 3ml high-purity nitric acid, and 0.5ml hydrofluoric acid for digestion. After the digestion is completed, transfer to 6 100ml volumetric flask; accurately pipette different volumes of tantalum element standard diluent with a concentration of 10μg / L into the above six 100mL volumetric flasks, shake up with ultrapure water with a resistivity of 18.2MΩ·cm, and prepare a A series of Ta element standard solutions with different concentrations, the mass percentage of Ta element in the high-purity nickel in the standard solution, that is, the content of tantalum element is shown in Table 1.

[0024] Table 1: Content of tantalum element in standard solution

[0025] standard solution ...

Embodiment 2

[0041] Embodiment 2: Tantalum element in nickel-based alloy Taking a nickel-based alloy sample as an example, the details are as follows.

[0042] (1) Prepare standard solution: Accurately weigh 6 parts of 0.2500g high-purity nickel, add mixed acid prepared from 5ml high-purity hydrochloric acid, 5ml high-purity nitric acid, and 0.5ml hydrofluoric acid for digestion. After the digestion is completed, transfer to 6 100ml volumetric flask; accurately pipette different volumes of tantalum element standard diluent with a concentration of 10μg / L into the above six 100mL volumetric flasks, shake up with ultrapure water with a resistivity of 18.2MΩ·cm, and prepare a A series of Ta element standard solutions with different concentrations, the mass percentage of Ta element in the high-purity nickel in the standard solution, that is, the content of tantalum element is shown in Table 1.

[0043] (2) Establish the interference correction model: according to the actual content range of Cr,...

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Abstract

The invention discloses a method for determining the content of a tantalum element in a nickel-based alloy. The method comprises the following steps: (1) preparing a standard Ta element standard solution; (2) establishing an interference correction model according to the actual content range of Cr, V and other elements in the nickel-based alloy; (3) measuring the Ta element standard solution on aninductively coupled plasma emission spectrometer, and drawing a standard curve; (4) accurately weighing a nickel-based alloy sample, and preparing a sample solution; and (5) determining the emissionintensity of the Ta element in the sample solution, calculating the content of the Ta element in the sample solution according to the standard curve, and correcting through an interference correctionformula to obtain the actual content of the Ta element in the nickel-based alloy. The method can accurately determine the actual content of the tantalum element in the nickel-based alloy, and has goodtest precision.

Description

technical field [0001] The invention relates to a method for measuring the content of tantalum elements in nickel-based alloys, belonging to the field of metallurgical analysis and detection. Background technique [0002] Nickel-based alloys are based on nickel (the mass fraction is generally greater than 50%). They are highly complex alloys containing many alloying elements. Chromium, cobalt, molybdenum, and copper are commonly used alloying elements. They have low density, High strength, oxidation resistance, high temperature resistance and other excellent properties, widely used in aviation, aerospace, nuclear reactors, petrochemical, energy conversion equipment and other fields. In recent years, with the implementation of the "Large Aircraft" project, my country has continuously promoted the independent research and development of high-end aviation engines. At the same time, the domestic demand for research, development, production and testing of nickel-based alloys has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/44
CPCG01N21/73G01N1/44
Inventor 任玲玲刘洁戚振南谭胜楠郭圣洁杨慧贤杨晓倩
Owner HEBEI IRON AND STEEL
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